Discone Antenna Basics

Fractal Antenna Systems is a world leader in RF and electromagnetic innovation. Due to its physical size constraints, a Discone antenna is practical only on VHF/UHF or higher frequencies. 5 out of 5 stars 27. Ver2cal'Wire'Antenna' • Actually'a'ver2cally'orientated' resonate'1/2'wave'dipole'with' the'earth'being'the' return ' half' • Due'to'poor'ground' conduc2vity'a. 4 Project: Big Wheel for Two Meters. discone is a degenerate form of the bicone antenna- the cone section is part of the antenna and contributes as much to he field pattern as does the disc. I've recently put together a Pi 3B+ with a Prostick Plus to allow me to receive ADS-B. Discone made of solid copper sheets, theoretically covering 700MHz to 2GHz. Find helpful customer reviews and review ratings for SE-900 Discone scanner Antenna at Amazon. You can see that the impedance is near 50 ohms across the sweep. Please help me to clarify my understandings related to the basics which I have read. AOR USA DA6000. ly/1UDy76 # Automatically shipped by. Antenna Basics • Students will identify some basic antennas including… o Yagi antenna o Discone antenna o Long wire antenna o Parabolic reflector antenna o VLF Loop Antenna • Investigate radio waves from the Sun using the Yagi antenna, Discone antenna and long wire antenna connected to the AR-3000A Communications Receiver. Review by Thomas James Arey. 6dB gain, 500 watt. This antenna must be cut before being used, according to the cutting diagram and the frequency for which to use it in transmission. The ARRL Antenna Compendium 3. Results: The consideration of radial discone as an array of at least 8 V-dipoles pro-duces a theta-polarised vector radiation pattern with magnitude a surface almost by revolution around z-axis. Passive radio telescopes are receiving antennas. is fearless in exposing antenna manufacturers who lie or use deceptive numbers to inflate the gain dB's of their antennas. Reddit user soooooil has posted a series of images showing his home made Discone antenna made out of wire coat hangers and designed for a minimum frequency of 130MHz. Additionally discone antennas is a fairly easy one to make at home. The simple dipole elements in turnstile are replaced by four flat sheets in Super-turnstile. Milazzo" \n Date: Sun, 16 Mar 2014 19:01:10 -0700 (PDT)\n \n Here are my plans for a wideband discone. Case 1 represents a bicone antenna with equal cone angles whereas cases 2 and 3 are bicones with unequal cone angles. Hall, K1TD Senior Assistant Technical Editor and Retired Associate Technical Editor The purpose of this paper is to provide general information about communications effectiveness as related to the physical height of antennas. This antenna is often implemented in a skeleton form. 1 out of 5 stars 106. Discone: This guide will teach you how to make a durable discone antenna aimed at the rtlsdr crowd. 1 Discone Basics 10. Milazzo implies, at higher frequencies it may be advantageous to minimize coax losses by attaching the RSP as close to the antenna as possible, and using a longer USB cable to connect it to the computer. Feb 24, 2019 - Explore theoneolddog's board "Ham radio", followed by 335 people on Pinterest. Since you have a discone, one alternative may be to build a simple 1/4-wave groundplane antenna with an SO-239 connector. This antenna is designed and manufactured in Japan to exacting standards. 12:31 Dailymash: Back to basics at Crufts as best in show goes to deformed rat bit. 6 MHz) and at full wavelength (14 MHz). AOR USA DA6000 SKU: ZAR-DA6000. This kind of antenna is suitable only for base stations, and is best as a antenna for scanners, however we are not necessarily interested communicating at the furthest range our equipment is capable of. The setup and programming takes a little getting used to but it has great versatility. Our fractal antennas and metamaterials allow us to deliver the top performing wideband RF solutions on the market. The same basic rules apply when mounting antennas on any aluminum bodied vehicle. , 2-section antenna features a heavy-duty fiberglass base station, an insulated conductor, a 144-148 MHz /440-450 MHz frequency range, 6 dBd gain VHF/8 dBd gain UHF, and a power capacity of 200-Watt. Outdoor Antenna Ham Radio Antenna Underground Bunker Electronics Projects Radios Survival Skills Dressers Lifehacks 3d Printing. Kandoian, and brought to the attention of radio amateurs in the later 1940s, the following. A discone antenna derives its name from its unique appearance. DIY antennas: The VHF/UHF folding ground plan antenna 4. When you have completed this chapter, you should be able to discuss the basic principles of wave propagation and the. His aim is to see that all understand the real basics of antennas, and are not taken in by the ever-prevalent, fine-sounding ad writers and other purveyors of false information. RADIATION PATTERNS OF THE ANTENNA 3. Short video talking about the best antenna choice for preppers looking to maximize capabilities. Tram Scanner 25MHz1,300MHz VHF/UHF Super Discone Base Antenna-1410 - The Home Depot Tram provides premium antenna components that provide functionality and durability of the antenna to deliver quality communication connections you depend on. A discone antenna consists of three main parts: the disc, the cone, and the insulator. D-130J D130J Original Diamond Vertical Discone Antenna - 10m-23cm. Depending on your preferred range, you can do this by using either coaxial cable or speaker wire. It works even better if you add reflectors below the V-dipole: six of the same rods you used for the antenna, each rod 54. used with a powerful, dual-band discone antenna to maximize communications range. Open Script. The discone is a popular design for the RTLSDR but i wasn't happy with most of the designs spread around on the message boards as they were quick and dirty solutions that wouldn't last long at all mounted outside (as a proper antenna should be). Far Fields [min (0. Antennas are used to launch signals into the ether, which then propagate over the signal path to the receiver, where another antenna captures the radio wave or signal for it to be transferred to the receiver. discone antenna as function of frequency is very much similar to high pass fllter [18]. Check out Scanner Master's Basic, Better, and Best | Wideband Base Antennas - Read more - http://bit. The Adcock antenna is an antenna (British English aerial) array consisting of four equidistant vertical elements which can be used to transmit or receive directional radio waves. The Basics - 1 •Antennas radiate (or receive) because electrons are accelerated (or are caused to accelerate) in the antenna’s elements •Radio or electromagnetic waves are both an E- (electric) and H- (magnetic) field •Electrons move parallel to E-fields •Strongest radiation from accelerating electrons linearly (back and forth) 2013. ARC Antenna Reference CD-ROM. DIY folding VHF / UHF Discone Antenna. The most difficult portion of a discone to build is the attachment point between the disc and cone. I may have thrown it away. The ARRL Antenna Book has the construction details on how to make a discone antenna for HF. His aim is to see that all understand the real basics of antennas, and are not taken in by the ever-prevalent, fine-sounding ad writers and other purveyors of false information. The antenna gain and radiation patterns of the Bi-Cone antenna are similar to the simple 1/2 wavelength dipole antenna. If you have been following the radio press for the last year or so, you are aware that there is a boom in interest in. Eliminates the need to drill holes in the exterior body of your truck, and will maintain a mounting location optimal for long distance communications. Satellite antennas have the best quality sound compared to other types. 15 wavelenghts away. In telecommunication, a microstrip antenna (also known as a printed antenna) usually means an antenna fabricated using microstrip techniques on a printed circuit board (PCB). The J-Pole makes a great base station and emcomm emergency communications amateur radio and scanner antenna. Pingbingding WA-2900A Antenna. as extensions of it. All the trimmer capacitors I ordered have arrived, so ive a good basic stock now. This means "decibels of gain relative to a standard half-wave dipole antenna". The fields around the antenna are spherical or curved, especially near the antenna. Update: Thinking I would try out a discone antenna while keeping the cost minimal, I ordered a Workman T-601 (~US$33) which arrived today. One of the following is not an omnidirectional antenna a. It is most familiar to many consumers as the conduit that carries cable television signals into homes and businesses. 0 to DVI / VGA External Video Card Multi Monitor Adapter - 2048x1152 - USB. DIY Man Portable Magnetic Loop Antenna Beginners Build for Ham Radio. So the radial discone has indeed on horizontal plane xOy the basic properties of a vertically polarised almost omni-directional antenna, a fact. One advantage may be that this discone is made of stainless steal instead of aluminium. Discone antenna – This antenna has several variants including a dual-Discone and an Inverted Discone. Gain should be equivalent to gain from a dipole tuned to the frequency which is to say slightly better than a discone generally. High Gain Air Band Antennas. Thread starter I am looking at a Diamond Discone Antenna one has a PL-259/SO-239 and another one has a Type N connector. Discone antenna specifications. shortwave, February 1995) If I connect the shield of my coax (which is grounded outside) to the antenna input of my R8, I hear lots of junk, indicating that there is an RF voltage difference between the coax shield and the R8 chassis. Only registered users can write reviews. Diy Longwire antenna for DX up to 40 MHz or more homemade. Proud USA company and 100% FREE shipping. Discone: This guide will teach you how to make a durable discone antenna aimed at the rtlsdr crowd. 4 cm, 868 MHz: 8. Antenna Aperture ANTENNA INTRODUCTION / BASICS Rules of Thumb: 1. The basic discone. Read honest and unbiased product reviews from our users. Why Is The Dipole So Popular? Because it is an inexpensive, yet effective. Dipole Antenna Length Calculator. See more ideas about Ham radio, Radio, Amateur radio. Don't know when I have time to do it, but I am sure the quality of reception will be much better. Jul 17, 2019 - Explore stellinij's board "discone" on Pinterest. A typical Discone antenna is quite commonly used for VHF/UHF and Microwave. Outdoor means antenna 1 metres from window. Bio-Conical antennas have an omni-directional radiation pattern in the H-plane similar to a dipole antenna. Our flagship model, The Two Meter J-Pole Antenna comes in two different configurations, either as a one piece antenna for base station use, or as a two piece breakaway model great for portable operations. 4GHz (WAY24143) Average rating: 0 out of 5 stars, based on 0 reviews Current Price $78. My primary station listens at 61. AOR USA DA6000. Antenna Basics. Inexpensive discone antennas are. 3 Two loops in one plane and symmetrical vertical dipole Fig. I'm new to SWL, so hope this isn't too basic a question. Vertically polarized. For scanning a Best Indoor Scanner Antenna - Top 5 Product Of 2019 Here are the reviews of the Dipole and Inverted V Antenna Basics Learn how dipole and inverted V antennas work and how to build an hf antenna. de/?page_id=353 Quagi Design Specifications. Antenna height has no effect on the pattern C. 0 out of 5 stars 15. The D Super Discone antenna is an ultra-wideband antenna, covering amateur radio. The radiation pattern in the horizontal plane is quite narrow, making its sensitivity highest in the direction of the horizon and rather less for signals coming. How to Make an FM Antenna. Ham Radio Outlet Plano, Texas. Outdoor Antenna Ham Radio Antenna Underground Bunker Electronics Projects Radios Survival Skills Dressers Lifehacks 3d Printing. , about 1/4 λ long on the lowest band). It works very well as a receiving antenna for my RSPs. Notes on HF Discone Antennas Topic: antenna. Listening will be more important than talking, but it can do both, well enough. 12:31 Dailymash: Back to basics at Crufts as best in show goes to deformed rat bit. Proud USA company and 100% FREE shipping. The M400/Starduster is back in stock as of June 2011 after not being availabe for several years. The improvement after trimming the antenna was noticeable. Includes mounting. Understanding how to specify, design and install them is crucial to maintaining successful network performance the design of an antenna can have a substantial impact on signal strength. 8 for the FLEX-6000 Signature Series SDRs. It specifies that antenna masts be grounded and coaxial cable shields be grounded to the electrical system ground. However, their manufacturer's recommendations may be different than those outlined in the above bulletin. Tram Pre-Tuned 144MHz148MHz VHF/430MHz460MHz UHF Amateur Dual-Band Base Antenna Tram Scanner 25MHz1,300MHz VHF/UHF Super Discone Base Antenna The Home Depot. de/?page_id=353 Quagi Design Specifications. The idea of combining a cage monopole with a discone to form a compact antenna structure originated at this Laboratory in August 1954. Generally regarded as the best all round discone antenna. This antenna is often implemented in a skeleton form. Don't buy an antenna which requires an external tuner, or advertised as automatic tuning! Any antenna which doesn't require matching, will be much lossier than one that does. The HamSphere IDC antenna is the first basic antenna that ships bundled with the HamSphere 4. MOBILE CB - K-700; Basic Complete w/ Magnet Mount 24" CenterLoad CB Antenna. Just the opposite. Contains Design and Construction of a Discone Antenna for 140-150 MHz. 28-mrt-2018 - Discone antenna for RTLSDR. 5G) frequency respectively] Make a comment below and Interpret the results. A coax cable, or coaxial cable, is a heavy, durable cable used for various types of residential and commercial installations. 0 out of 5 stars 15. The idea discone antenna looks exactly like its namesake; a metal disk attached to a metal cone. 237B-1(2, 3) Rotatable Log Periodic Antenna Basic View 6. Description nn2 URC-200 (V2) UHF/VHF Transceiver nn2 UAC-100 Power Supply nn2 UVU-200 Discone Antenna nn2 URF-B61-LLL Antenna Cable nn1 UCA-100 Retransmit Cable OPTIONAL EQUIPMENT: nnUVU-300 3 Band Antenna for use in the 30 MHz to 90 MHz band as well as UHF and VHF (Only needed if EBN-30 option is purchased with radio). Diy Longwire antenna for DX up to 40 MHz or more homemade. The discone antenna is characterized by very wide bandwidth, covering a 101 frequency range ; It also has an omnidirectional pattern in the horizontal plane and a gain comparable to that of a dipole ; The feedpoint resistance is typically 50 ohms ; Typically, the length of the surface of the cone. In telecommunication, a microstrip antenna (also known as a printed antenna) usually means an antenna fabricated using microstrip techniques on a printed circuit board (PCB). 1 Discone antenna on the roof 10. Milazzo implies, at higher frequencies it may be advantageous to minimize coax losses by attaching the RSP as close to the antenna as possible, and using a longer USB cable to connect it to the computer. DESIGN AND ANALYSIS OF DISCONE ANTENNA 1B. As these fields travel out from the antenna, rounding becomes less pronounced, turning more planar in character. Radiation is the term used to represent the emission or reception of wave front at the antenna, specifying its strength. Discone antenna for TV broadcasting system. 2 Mounts for Whip Antennas 16. To characterize an antenna it is necessary to understand the basics of antennas and the most important parameters of antennas measurement. Whether you are chasing the DX, or ragchewing mannual 80m, this antenna will do a chg-5x job. One advantage may be that this discone is made of stainless steal instead of aluminium. This antenna is designed and manufactured in Japan to exacting standards. Includes tips for construction, mounting. The simple build covers 50-1100MHz making it perfect for general use with a RTL-SDR and for grabbing some extra HDTV channels when not hooked up to your dongle. 299kr Exkl moms: 12. It is usually mounted vertically, with the disc at the top and the cone beneath. All depends on what frequencies you want to cover. Parameter List B. KALI VARA PRASAD 2 Y PRUDHVI RAJ 1 Asst. Pos Horizontal Loop Antenna Experiments. patch antenna is the rectangular antenna (usually in a plastic hous-ing) used widely in 2. The present antenna is a very short long wire which doubles back on itself fed with a long piece of coax. A discone is a fun and super duper cheap antenna to make if you get that f type adapter. I'd been meaning to test an antenna that to all intents and purposes was doomed to fail, a long-wire on the ground. Making your own Discone Antenna - Free ebook download as PDF File (. Unfortunately many a radio guy has fallen into the trap of choosing the wrong antenna with the view to "get back the coax loss and more". Gain of rectangular X-Band Aperture G = 1. Microstrip patch antennas radiate primarily. Due to the variety of methods of analysis and design, and the. Nail, Electronics, Vol. This information capacity is defined. *H 3 2 Antenna Basics An antenna is basically a conductor exposed in space. shf antenna agile rcv uhf ehf agile wsb xmt uhf ec ehf ec nsb #1 spacecraft bus reaction wheel assemblies (scs) horizon sensors propellant tanks flexible substrate solar array panels-z - x thrusters-x wing crosslink antenna-x wing payload mdr nulling antennas crosslink mdr duca antennas (mdr*, crosslink). You can see that the impedance is near 50 ohms across the sweep. Two years later, in 1943, Armig Kandoian at the Federal Tele-phone and Radio Corporation applied for a pat-ent on the discone antenna. It works even better if you add reflectors below the V-dipole: six of the same rods you used for the antenna, each rod 54. One can simply understand the function and directivity of an antenna by having a look at its radiation pattern. 28 List List Price $101. See also specific tags: [antenna-theory], [antenna-construction], [dipole], etc. 7 times a quarter wavelength of the antenna's lowest frequency. FREE Shipping by Amazon. RE: The DIY Scanner Discone; My first two meter antenna was a piece of 19 inch coathanger wire witha PL 259 connector (M-F) on a magnet attached to a old audio level instrument box for a ground. To characterize an antenna it is necessary to understand the basics of antennas and the most important parameters of antennas measurement. Read honest and unbiased product reviews from our users. 3 Yagis and Quads at VHF and UHF 15. Indeed, it is a staple for upper-range scanning receivers. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Cut out a large square of cardboard, say, make it 1 meter square. 79 Trending at $15. MCQ in Antennas Part 1 | ECE Board Exam About Pinoybix Pinoybix. Radioteletype is used frequently on this band as well. Thanks for contributing an answer to Quantitative Finance Stack Exchange! Please be sure to answer the question. Christmas Glow first launched in 2017 near Vancouver, Canada, and guests were captivated by the event. Antenna Measurements. Reddit user soooooil has posted a series of images showing his home made Discone antenna made out of wire coat hangers and designed for a minimum frequency of 130MHz. The present antenna is constructed according to the basic relationships described in the article and illustrated in FIG. Wireless Basics -- Jun When the Big One Hits -- Oct Max System 900 MHz discone -- Jun MFJ G5RV antenna -- Jun MFJ-462B Multi-reader -- Apr MFJ-864 Watt Meter -- Jul. Your picture of the antenna shows a Parabolic Discone and a cone on top. The Antenna is an ultra-wideband antenna covering amateur radio, commercial 2-way, public safety, air traffic control and various utility frequency bands. For local and moderate distances, such antennas will deliver signals well above the noise level. This is the basic form for a 16 spoke, Discone Antenna. In other words, the transmission line is connected at the center. Antenna elements, backing structures, parametrized geometry visualization, antenna design, dielectrics discone; Fractal Antennas Sierpinski gasket and carpet, In it's most basic form, a microstrip patch antenna consists of a radiating patch on one side of a dielectric substrate and a ground plane on the other side. It is composed of a head unit, mounted in the dashboard area, wired to a small magnetic antenna on the roof. Includes tips for construction, mounting. They are mostly used at microwave frequencies. In a base antenna the “ground” is the 3 or 4 radials that extend from its base. Antenna Design. An antenna constructed from separate elements is lighter and more cost effective to construct. txt) or read book online for free. videos and guides available on the FreeDV website but the basics are straightforward. This document has been recently upgraded to take advantage of the CSS system and have also added a button to allow. 94 eBay determines this price through a machine learned model of the product's sale prices within the last 90 days. It is therefore suiteable to discover characteristics of electronic parts - and to quickly check if they are o. With an output impedance of 50 (nominal), it can be used with any 50 instrument. Sirio Antenna SD2000N 100 MHz-2 GHz Discone Wide Band Antenna. Types of Antennas. His aim is to see that all understand the real basics of antennas, and are not taken in by the ever-prevalent, fine-sounding ad writers and other purveyors of false information. Tekst er tilgængelig under Creative Commons Navngivelse/Del på samme vilkår 3. Mounted discone antenna designed for VHF and UHF coverage. If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated ~~ G9B06 (C). Watch this space. A coaxial cable has an inner cable surrounded by an insulating agent, usually made of lightweight plastic. 237B-1(2, 3) Rotatable Log Periodic Antenna Basic View 6. Diy Longwire antenna for DX up to 40 MHz or more homemade. 10 dB increase visible means 100 times more signal received. Highest Gain Discone Antenna Ever; The basic principles of the Parabolic Discone are true and based on physics. 1/2 wave over 1/4 wave antenna DC grounded. Get the ultimate wideband performance with a discone antenna! These antennas offer incredible bandwidth in a compact package, making them ideal for apartments or small lots! Depending on which you choose, our line of versatile discone antennas gives you the ability to cover Amateur Radio, public safety, commercial 2-way, cellular, air traffic. The idea of combining a cage monopole with a discone to form a compact antenna structure originated at this Laboratory in August 1954. The M400/Starduster is back in stock as of June 2011 after not being availabe for several years. A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. The Whistler 1098 scanner is covering the 70 cems band with a Uniden UBC9000XLT scanning the 2 mtr band. RE: The DIY Scanner Discone; My first two meter antenna was a piece of 19 inch coathanger wire witha PL 259 connector (M-F) on a magnet attached to a old audio level instrument box for a ground. pdf), Text File (. Most of the antennas that I make are broad banded, because after awhile the antenna farm gets so thick, coupling, and all sorts of entangling hassles make running the farm problematic. DIY antennas: The VHF/UHF folding ground plan antenna 4. 3 Yagis and Quads at VHF and UHF 15. The Discone, Windom, Zepp and J-Pole, the X-Beam and ZL Special - just to name a few. Highest Gain Discone Antenna Ever; The basic principles of the Parabolic Discone are true and based on physics. Analysis of biquad Yagi for WIFI applications. solder your antenna plug to the other end of the coax. Se brugsbetingelserne for. Last week I did a lot of research on dipoles and baluns, I also did some measuring in the back garden to see what length of antenna I could get away with. Everything You Need to Know About Choosing a Discone Antenna. ( Following this general “look” or design I see a number of commercial antennas. Antenna Basics • Students will identify some basic antennas including… o Yagi antenna o Discone antenna o Long wire antenna o Parabolic reflector antenna o VLF Loop Antenna • Investigate radio waves from the Sun using the Yagi antenna, Discone antenna and long wire antenna connected to the Winradio Communications Receiver. 1% similar) Basic mobile CB whip handles to 500w 1kw if co-phased use radios or other Sr meter set into coil for superior transmit has standard 3/8 x 24 thread m bottom fits most mounts this is antenna only, not radio, coax, mount 9 base, holds 48 whip rustproof stainless steel 1 year full warranty black. 4 LW Where: Length (L) and Width (W) are in cm 3. I've recently put together a Pi 3B+ with a Prostick Plus to allow me to receive ADS-B. A discone antenna derives its name from its unique appearance. A broadband discone antenna arrangement for improving the elevation pattern of the basic discone antenna at frequencies many times the antenna cutoff frequency. 5: 1 1 3/8" maximum mast diameter UHF female. This CD provides a comprehensive guide to antennas with a good selection of antennas to consider for construction. It can run out the window to a tree, or stapled along under the eaves, or even in the attic. They just don't hold up in the winter at all. 5 Discone antenna Basic theory A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. International Journal of Latest Research in Engineering and Technology (IJLRET) ISSN: 2454-5031(Online) www. Discone antenna basics Although sometimes called a scanner antenna, the discone antenna receives its name from its shape: it consists of a top disc underneath which is a cone. 1-16 of 125 results for "antenna specialists antennas" Skip to main search results CB Antenna 4" Magnet Kit w/RG-58 Coax & Rubber Boot. Here is the output of VK5DJ’s program:. Receiving Loop Antenna Calculator. Generally regarded as the best all round discone antenna. 2M horiz antenna cushcraft 2M 4-elem. Z approaches 50 ohms. In spite of this, the stock antenna's performance was surprisingly good. DESIGN AND ANALYSIS OF DISCONE ANTENNA DESIGN AND ANALYSIS OF DISCONE ANTENNA 1BKALI VARA PRASAD 2 Y PRUDHVI RAJ 1 Asst Professor, Department of ECE, K L University 2Student, BTech, Department of ECE, K L University ABSTRACT:A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc It is usually mounted. is from Ohio State University , Columbus, in 1969. * 50 KHz step size * RF Power measurement in 0. 8 out of 5 stars 57 £8. Get the ultimate wideband performance with a discone antenna! These antennas offer incredible bandwidth in a compact package, making them ideal for apartments or small lots! Depending on which you choose, our line of versatile discone antennas gives you the ability to cover Amateur Radio, public safety, commercial 2-way, cellular, air traffic. A discone antenna is omnidirectional, vertically polarized and with gain similar to a dipole, it is exceptionally wideband, offering a frequency range ratio of up to approximately 10:1. Professor, Department of ECE, K L University 2 Student, B. We have antenna ranges that cover up to 150 miles. Tram Pre-Tuned 144MHz148MHz VHF/430MHz460MHz UHF Amateur Dual-Band Base Antenna Tram Scanner 25MHz1,300MHz VHF/UHF Super Discone Base Antenna The Home Depot. Making statements based on opinion; back them up with references or personal experience. 3 Two loops in one plane and symmetrical vertical dipole Fig. I haven't used the receiver that much at HF. My FRG7 is listening for cw, once it stops drifting hi. The concept of an indoor discone is a heavy compromise, buying a 100-dollar antenna then placing it in the corner is pointless. Marca: Diamond HARD DISK ESTERNO 2,5 USB 3. I have also included reviews of the Sony ICF-2010, Grundig 100 PE, the Sony ICF-SW100S, and the LF H800 Skymatch Active Antenna. Topics include directivity, polarization, bandwidth, impedance, frequency bands, all things necessary for an understanding of antenna theory, antenna basics and antenna fundamentals. 0 to DVI / VGA External Video Card Multi Monitor Adapter - 2048x1152 - USB. A fundamental list of antenna theory concepts, an antenna basics menu is given here. Antenna Design. Wireless | T/ICT4D Lab. 3 GHz Discone Wide Band Antenna. They are mostly used at microwave frequencies. To narrow the scope a little bit, let me only discuss the type of meetings you mention - where you read a research paper and discuss it to a high level of detail with your advisor. Started by cap235629, September 24, 2008, 04:06:04 am. Length Foot Wind MPH; X30A: 2m / 70cm: 2m: 1 1/2l 70cm: 2 5/8l: 3. 5 out of 5 stars 27. MCQ in Antennas Part 1 - Answers About Pinoybix Pinoybix. 1933 to 2003 Article Titles - Text Searchable Use your browser search function to find text By Terry VK5TM. It is an effective antenna for short-w ave listeners (SWL) and amateur radio enthusiasts (HAM) to receive medium-w ave and short-w ave in the limited living area of the city. Short video talking about the best antenna choice for preppers looking to maximize capabilities. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. A fundamental list of antenna theory concepts, an antenna basics menu is given here. RE: The DIY Scanner Discone; My first two meter antenna was a piece of 19 inch coathanger wire witha PL 259 connector (M-F) on a magnet attached to a old audio level instrument box for a ground. 793 Canning Parkway Victor, NY 14564 Phone (716) 924-4560 Fax (716) 924-4555 Web: www. The Antenna is an ultra-wideband antenna covering amateur radio, commercial 2-way, public safety, air traffic control and various utility frequency bands. On receive, the signal is received by the SSB radio, then demodulated and decoded by FreeDV. Gain is similar to a dipole. 5 and 3 GHz. Below is a raw compilation of published specifications and sales blurbs from manufacturers and dealers, supplemented with information from independent sources where available. I've used this basic setup for years with good results and minimal signal loss at a somewhat reasonable price. 1 out of 5 stars 106. Small, UHF forms may be constructed of sheet metal and thus exhibit the distinctive Disk and Cone. It is the antenna which makes or breaks any listening project. I've heard before that for the UHF/VHF bands that should be ok. All About the Discone Antenna, QEX, Jan-Feb-2007 - Steve Stearns, K6OIK - 2007. Grounding is key to good reception by John Doty (as published on rec. Open Script. Basic Omnidirectional: Sky Band Base Antenna This inexpensive, discone type antenna gives you full-band coverage (25 - 1300 Mhz) at a very reasonable. They just don't hold up in the winter at all. I am trying to use an active TV antenna I had for my old TV and make an adapter to be able to use it with my device. In any illustration, the sketch drawn to represent the radiation of an antenna is its radiation pattern. 26, pp 167-169, Aug. Its been back to basics lately, without HF gear, enjoying local nets, building antennas and setting up the shack again. W4RNL Antenna Theory. I did the scan with a display set to Smith chart. Antenna Theory. Alternate Feed Methods A common variation in patch antenna design is the location and routing of the feed, to obtain a desired feedpoint impedance, to control the polarization, or for convenient layout. folded dipole c. Making statements based on opinion; back them up with references or personal experience. The meetings with your supervisor serve many purposes. Case 1 represents a bicone antenna with equal cone angles whereas cases 2 and 3 are bicones with unequal cone angles. STEALTH 9310 HF Mobile Autotune Whip Antenna HAM Radio 1. This antenna is away from the discone at roughly the same. The discone antenna is the Swiss Army knife of antennas. discone antenna model cd -2w 001-91445 Rev. The Ramsey Model FM-100. It specifies that antenna masts be grounded and coaxial cable shields be grounded to the electrical system ground. A discone antenna derives its name from its unique appearance. comǁ Volume 1 Issue 3ǁAugust 2015 ǁ PP 43-51 www. Buy Tram 1410 Broad Band Discone/Scanner Base Antenna with fast shipping and top-rated customer service. 7 Bibliography 16 VHF and UHF Mobile Antennas 16. The Antron 99 Base Station Antenna makes it possible to tune the input to the antenna and obtain the right SWR reading over a range of frequencies, thanks to the Solarcon Twin Ring Adjust-A-Match tuning feature. RE: The DIY Scanner Discone; My first two meter antenna was a piece of 19 inch coathanger wire witha PL 259 connector (M-F) on a magnet attached to a old audio level instrument box for a ground. Just for fun I connected my 100mW WSPR TX (Ultimate 3) to this discone and got reports from VK5. The only downside is that they need a paid subscription to be able to tune in to the stations. mfjenterprises. This item has all the abilities to become your one-time solution when it comes to the best indoor scanner antenna. These vertically mounted antennas feature a disc at the top and a cone underneath, both of which are attached to the mast. The product works, I have used a Diamond for several years and needed a second wide band antenna to connect to my BCD536HP scanner and was told that this antenna would be as good as the Diamond. Discone antenna for TV broadcasting system. Free Shipping! Add to Wish List. KALI VARA PRASAD 2 Y PRUDHVI RAJ 1 Asst. I am beginner in the Antenna theory and I have a few basic questions. Mounted discone antenna designed for VHF and UHF coverage. 130,490, and has been used for a variety of applications. 24 thoughts on “ Take A Mini Lathe For A Spin disc and cone connector pieces for the ski pole discone antenna I’ve been working on. Antennas are used to launch signals into the ether, which then propagate over the signal path to the receiver, where another antenna captures the radio wave or signal for it to be transferred to the receiver. A dipole antenna requires to be fed with 20 kW of power to produce a given signal strength to a particular distant point. Antenna is designed and analysed its performance by varying elements. folded dipole c. Geometry C. This item has all the abilities to become your one-time solution when it comes to the best indoor scanner antenna. International Journal of Latest Research in Engineering and Technology (IJLRET) ISSN: 2454-5031(Online) www. The calculated gains still need to be verified by someone else who honestly understands the theory. KALI VARA PRASAD 2 Y PRUDHVI RAJ 1 Asst. Microstrip patch antennas radiate primarily. Its been back to basics lately, without HF gear, enjoying local nets, building antennas and setting up the shack again. Thread starter I am looking at a Diamond Discone Antenna one has a PL-259/SO-239 and another one has a Type N connector. This particular product is no. Short video talking about the best antenna choice for preppers looking to maximize capabilities. Sharing Frequencies. We have antenna ranges that cover up to 150 miles. Get the ultimate wideband performance with a discone antenna! These antennas offer incredible bandwidth in a compact package, making them ideal for apartments or small lots! Depending on which you choose, our line of versatile discone antennas gives you the ability to cover Amateur Radio, public safety, commercial 2-way, cellular, air traffic. is fearless in exposing antenna manufacturers who lie or use deceptive numbers to inflate the gain dB's of their antennas. The concept of an indoor discone is a heavy compromise, buying a 100-dollar antenna then placing it in the corner is pointless. Feb 24, 2019 - Explore theoneolddog's board "Ham radio", followed by 335 people on Pinterest. Wideband reception covering 25-1300 MHz Transmit bands 26-27-46-49-72-144-220-440-900-1290 MHz Rust free stainless steel structure Max power 300 Watts CB / 200 Watts VHF-UHF SWR <1. When I did the measurements I realised that I could just fit a half-size G5RV antenna. Thread starter I am looking at a Diamond Discone Antenna one has a PL-259/SO-239 and another one has a Type N connector. 1 point · 2 years ago. It is a wide band antenna able to receive between 75. Hi, Being quite rural I never thought I would find anyone using cb FM, over the last 24 hours my uniden scanner has picked up 2 occupied channels on my recent home discone antenna, I could not pick these up on any other antenna from my home, as it is the discone that harps achieved this how is this antenna likely to be at transmitting as it is fitted with 75ohm cable, I thought I have read in. 1 Antennas for VHF-UHF FM 16. Passive radio telescopes are receiving antennas. It offers 0dB of gain, on frequencies from about 120-1300MHz, and with a vertical element on top, it is usable down to about 30MHz. Since you have a discone, one alternative may be to build a simple 1/4-wave groundplane antenna with an SO-239 connector. Free Shipping! Add to Wish List. Technologies Pcounter A-One Eleksound Circusband A-Open AOpen A & R A-Team A-Tech Fabrication A-to-Z Electric Novelty Company A-Trend Riva AAC HE-AAC AAC-LC AAD Aaj TV Aakash Aalborg Instruments and Controls Aamazing Technologies Aanderaa Aardman Animation. Ver2cal'Wire'Antenna' • Actually'a'ver2cally'orientated' resonate'1/2'wave'dipole'with' the'earth'being'the' return ' half' • Due'to'poor'ground' conduc2vity'a. The stock antenna is 115mm long meaning it's tuned for approximately 650MHz. ANTENNA SYSTEM ----- HF antenna G5RV jr @ 20 ft. If the addition of a reflector makes the same field strength available with an input power of 11kW. Discone antenna basics Although sometimes called a scanner antenna, the discone antenna receives its name from its shape: it consists of a top disc underneath which is a cone. A coaxial cable is usually attached at the point of intersection of the disc with the cone, to feed the antenna. a discone antenna AOR DS3000A. SCANNER & AMATEUR BASE - 1410; 25-1300Mhz rcv. HF antenna's for home use of CAP equipment. This CD provides a comprehensive guide to antennas with a good selection of antennas to consider for construction. FREE Shipping by Amazon. Tekst er tilgængelig under Creative Commons Navngivelse/Del på samme vilkår 3. Since you have a discone, one alternative may be to build a simple 1/4-wave groundplane antenna with an SO-239 connector. On receive, the signal is received by the SSB radio, then demodulated and decoded by FreeDV. When I did the measurements I realised that I could just fit a half-size G5RV antenna. Now, as I was replacing an existing outdoor antenna, I simply hooked the antenna up to the already grounded coaxial cable coming off the roof. If the wire is made Chapter 7 Multiband Antennas Fig 1—A t A, a random-length wire driven directly from the pi-network output of a transmitter. Microstrip patch antennas radiate primarily. I've used this basic setup for years with good results and minimal signal loss at a somewhat reasonable price. Cheap/old coax is easy to learn the basics with. Planar Disk Antennas for Ultra Wideband Applications; Mobile Antenna Basics; Mobile Low Profile Antennas; Directional Discontinuity Ring Radiator (DDRR) Ground Radials with Log Periodic Antennas; Ring Stub - Circularly Polarized; Cheap Antennas for Low Earth Orbit (LEO) Pre Amp Cookbook; Moon Mechanics & Properites; 1200 MHz Mobile Antenna. A panel at the bottom right shows the selected antenna. Sharing Frequencies. My new IC-R20 follows me to the summer house when the current bun is up. This antenna beams into three quadrants without the use of a rotator. Due to its physical size constraints, a Discone antenna is practical only on VHF/UHF or higher frequencies. 0 to DVI / VGA External Video Card Multi Monitor Adapter - 2048x1152 - USB. 6 Microwave Antennas 15. Here is a list of the basic types, their radiation angles (with reference to the horizontal), and their prime suitable uses. WideBand Receive Discone Base Antenna. At B, an L. My secondary station listens a 83. net Home - Amateur Radio (Ham Radio) Community Site. Some Overlooked Antenna Basics for DX and Off-World Communications --by L. Just the opposite. Understanding how to specify, design and install them is crucial to maintaining successful network performance the design of an antenna can have a substantial impact on signal strength. Antenna Fundamentals 1-1 TABLE OF CONTENTS 10. A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. Electromagnetic wave, spectrum, & antenna basics. Although the Max System 8HH is no longer in production it can still be found on eBay. Additionally discone antennas is a fairly easy one to make at home. The LP antennas just hear signals best in the direction they are pointed. The two elements can be either solid or composed of separate elements. Everything You Need to Know About Choosing a Discone Antenna When you need to capture a wide range and greater distance of radio waves, it helps to have a discone style of antenna. So a way for a ready-made option is to take a mobile antenna (that is already pre-tuned) and create its ground. Also, the Web-SDR of Twente NL boys make use of this antenna. A dipole design for the 20-meter band is an. This antenna is often implemented in a skeleton form. New Arrived130 Discone Broadband 100-1300mhz Base Station Antenna , Find Complete Details about New Arrived130 Discone Broadband 100-1300mhz Base Station Antenna,Omnidirectional Base Station Antenna,Discone Antenna,Broadband Antenna from Communication Antenna Supplier or Manufacturer-Fujian Quanzhou Huahong Communication Co. I think it has two antenna connections on the back, terminal and coax? Looks like a fun radio. Sirio Antenna SD2000N 100 MHz-2 GHz Discone Wide Band Antenna. 2 product ratings 2 product ratings - VHF UHF Ham Radio Police Scanner Antenna Amateur Mobile Magnetic Base BNC Male $13. To narrow the scope a little bit, let me only discuss the type of meetings you mention - where you read a research paper and discuss it to a high level of detail with your advisor. This link is listed in our web site directory since Monday Sep 17 2012, and till today "Discone Antenna Calculator" has been followed for a total of 3060 times. Electronics Projects Electronics Basics Robotics Projects Diy Robot Raspberry Pi Projects Diy Tech Picture On Wood Computer Technology Open Source. Common microstrip antenna shapes. However, I think you may be wanting to change data on the second pass based on changes made in the first pass so I have structured the code below to do that. J1a = J1b = ON. The disc and cone can be made from solid metal sheet, but this would increase the windage, i. The simplest multiband antenna is a random length of #12 or #14 wire. 0 to DVI / VGA External Video Card Multi Monitor Adapter - 2048x1152 - USB. The Ramsey Model FM-100. At B, an L. It is the antenna which makes or breaks any listening project. 4 LW Where: Length (L) and Width (W) are in cm 3. With that outside tower and antenna you should have little trouble picking up a lot of activity. This item is currently out of stock. Antenna for 3G N5321 4G EM7345 GOBI5000 NGFF Card. An auxiliary conical element is added to the basic discone arrangement coaxially positioned between the main cone and the disc element. Check out Scanner Master's Basic, Better, and Best | Wideband Base Antennas - Read more - http://bit. 1% similar) Basic mobile CB whip handles to 500w 1kw if co-phased use radios or other Sr meter set into coil for superior transmit has standard 3/8 x 24 thread m bottom fits most mounts this is antenna only, not radio, coax, mount 9 base, holds 48 whip rustproof stainless steel 1 year full warranty black. On receive, the signal is received by the SSB radio, then demodulated and decoded by FreeDV. 237B-1(2, 3) Rotatable Log Periodic Antenna Basic View 6. Notes on HF Discone Antennas Topic: antenna. 5 Reflectors 15. MODEL EM-6105 WIDEBAND DISCONE ANTENNA 1. It is hard to be certain what you are trying to do, and it should be fine to do all of this is a single pass of the update cursor. Log-Periodic and Discone Antennas 15. The most difficult portion of a discone to build is the attachment point between the disc and cone. The antenna is a six-element, dual-band, multiple-input and multiple-output (MIMO), patch array antenna that operates in the 2. Twenty meters designates the length of the particular radio wave used to transmit and receive voice and Morse code. Power can be fed to the wire on practically any frequency by one or the other of the methods shown i n Fig 1. Now, as I was replacing an existing outdoor antenna, I simply hooked the antenna up to the already grounded coaxial cable coming off the roof. Get the ultimate wideband performance with a discone antenna! These antennas offer incredible bandwidth in a compact package, making them ideal for apartments or small lots! Depending on which you choose, our line of versatile discone antennas gives you the ability to cover Amateur Radio, public safety, commercial 2-way, cellular, air traffic. It covers the basic principles about antennas. Dean Straw, N6BV, and Gerald L. Thus, the amateur FM'er often resorts to mounting a gain mobile antenna (such as the Antenna Specialists ASPS 177) with radials, on a. 5 to 40 MHz 25 KW average 50 KW Peak 15 db Average Front to Back Ratio 14 db Average gain More information to be added 237C Non Planar Log Periodic Antenna - Fixed Direction Basic View 237C-2 4 - 40 MHz 237C-3 6. An Ultrawide-Band Double Discone Antenna with the Tapered Cylindrical Wires Article in IEEE Transactions on Antennas and Propagation 53(10):3403 - 3406 · November 2005 with 698 Reads. 28 List List Price $101. He is a Fellow of IEEE. The frequency coverage is 700 to 3000 MHz and the DA5000 employes a N connector. Another HDTV antenna that packs reception power for its smaller size is the Pingbingding WA-2900A. I used this discone calculator to make my design. The antenna's feed point is at the center of the disc. APPLICATIONS. J1a = J1b = ON. 0 Introduction The Model EM-6105 Wideband Discone Antenna is a broadband omni-directional antenna that performs electric field measurements from 10 kHz to 2 GHz. Highest Gain Discone Antenna Ever; The basic principles of the Parabolic Discone are true and based on physics. FlexRadio Systems announces the immediate availability of SmartSDR v2. How To Install A Coaxial Cable F Connector; DIY Discone Antenna. More specifically, trunking is a method of sharing a limited number of radio frequencies among a large number of users. In a base antenna the “ground” is the 3 or 4 radials that extend from its base. Flat-screen televisions are one of the greatest things to happen to home entertainment electronics in a while. Ch2 Antenna Basics - Free download as PDF File (. Any experiences or opinions? By the way, there's no big obstructions around the house, and I. DIY Man Portable Magnetic Loop Antenna Beginner's Build. A typical Discone antenna is quite commonly used for VHF/UHF and Microwave. The Gain of an antenna with losses is given by: 2. 8-30 MHz 200W Stealth Telecom $1500 is a bit much for a mobile HF antenna, hope a Chinese knockoff appears for a really good deal soon. This is the first part ,of a two part look at the new Vortex Antenna Systems Slim Jim folded Di-pole antenna for the 11 meter band. A coaxial cable is usually attached at the point of intersection of the disc with the cone, to feed the antenna. High Gain Air Band Antennas. Gain of Circular X-Band Aperture G = d 20 Where: d = antenna diameter in cm 0 = aperture efficiency 4. Professor, Department of ECE, K L University 2 Student, B. Raising and lowering the rings will determine how low or high the frequency will be. The basic antenna structure is the bifolded monopole, recently proposed as multimode high-frequency (HF) naval antenna, which is here augmented with a top-mounted discone mainly operating in the. eye 831 W4RNL Antenna Theory. Write Your Own Review. • The antenna is VERY important if long range is important • A quarter wave antenna is an easy and good solution, but it is not small (433 MHz: 16. A helical antenna made of one helical wire, the most common type, is called monofilar, while antennas with two or four wires in a helix are called bifilar, or quadrifilar, respectively. Gain is similar to a dipole. Antenna Forum. Discone antenna has radiated at a small angle in the vertical plane. Also make sure you have good quality coax running from the antenna to your radio. At B, an L. The improvement after trimming the antenna was noticeable. The present antenna is constructed according to the basic relationships described in the article and illustrated in FIG. I have found that on the net most call for a more. Alternate Feed Methods A common variation in patch antenna design is the location and routing of the feed, to obtain a desired feedpoint impedance, to control the polarization, or for convenient layout. txt) or read online for free. The basic discone. Comet Discone DS-150S. Sirio Antenna SD 2000 U 100 Mhz-2 Ghz Discone Wide Band Antenna. S-Parameters 2. All depends on what frequencies you want to cover. First, we should note the difference between antennas, masts and towers. At B, an L. A panel at the bottom right shows the selected antenna. February 21, 2019 - 10:28 am Ernst Vondelaar. His thread discussing the Discone is here. Wireless | T/ICT4D Lab. Antenna is designed and analysed its performance by varying elements. I see the point made about the discone (when used as a transmittin antenna) not being really isotropic, since it is not really a "point" radiator, which is to say that EMF from the sources does not appear as a perfect equipotential sphere in all directions from the antenna, with the antenna appearing as the center of the sphere. 2 A-Frame 20-10 Meter Discone. The antenna is composed of a disc shaped radiator on top of a cone shaped ground plane. "I wonder how this would compare to a discone or the planar disc antenna linked on the side bar. Antenna Height and Communications Effectiveness By R. Better: Ground Plane Scanner Antenna Kit The Comtelco is a great mobile antenna, now you can use it as a base antenna. *D 3 2 Antenna Basics An antenna is basically. used with a powerful, dual-band discone antenna to maximize communications range. Diy Longwire antenna for DX up to 40 MHz or more homemade. Lee National Aeronautics and Space Administration Glenn Research Center Cleveland, Ohio 44135 Introduction A notch antenna, also known as tapered slot antenna (TSA), is an end-fire traveling wave antenna. Your little portable shortwave radio has a useless antenna. Omnidirectional, vertically polarized and exhibiting unity gain, it is. Quagi antenna is designed using 4NEC2 tool. Cebik, W4RNL The discone antenna is a broadband basic antenna originally designed for VHF-UHF service. The tripod that I have is a Skywalker Signature Series 5ft Heavy Duty. Don't know when I have time to do it, but I am sure the quality of reception will be much better. Here is the output of VK5DJ’s program:. Electromagnetic wave, spectrum, & antenna basics. Satellite Antenna: This type was released for cars in 2010. Download Antenna Design Softwares and Tools discone1. juli 2019 kl. It is most familiar to many consumers as the conduit that carries cable television signals into homes and businesses. Understanding Antennas for the Non-Technical Ham ii Preface One reason for writing this book is to educate you so you can make an informed choice concerning the best antenna for you. Due to the variety of methods of analysis and design, and the. Outdoor Antenna Ham Radio Antenna Underground Bunker Electronics Projects Radios Survival Skills Dressers Lifehacks 3d Printing. Comparing antenna gain to a half-wave dipole is common, and the gain is designated in decibels with the unit reference dBd (the last ‘d’ for ‘dipole’). A monopole antenna is a class of radio antenna consisting of a straight rod-shaped conductor, often mounted perpendicularly over some type of conductive surface, called a ground plane. Highest Gain Discone Antenna Ever; The basic principles of the Parabolic Discone are true and based on physics. 0 Members and 1 Guest are viewing this topic. Radioteletype is used frequently on this band as well. SKU: D130J Diamond. The inner surface of the outer conductor of the coaxial transmission feed line, which line passes. The Discone + the support pole + the 20 m coax cable form an extra, top capacitance loaded, antenna at 1/4 wavelength (3. Tram(R) 1410 Scanner 25MHz-1,300MHz VHF/UHF Super Discone Base Antenna Today: $73. I tried a dozen or so stations and there is a difference. 7308dB per metre @ 1GHz. Discone antenna specifications. An auxiliary conical element is added to the basic discone arrangement coaxially positioned between the main cone and the disc element. Analysis of biquad Yagi for WIFI applications. 3 Two loops in one plane and symmetrical vertical dipole Fig. Antenna Application Notes -- From Eagle 1St -- Antenna and Feedline Measurements, Return Loss Bridge Basics, Duplexer Tuning using Bridge, Replaceable Pin "N" Connector, Reflected Power Measurements, Spectrum Analyzer Measurements. ANTENTOP- 01- 2012, # 016 Discone Antenna for the 2- meter Band by V. This item is currently out of stock. Quagi antenna is designed using 4NEC2 tool. The setup and programming takes a little getting used to but it has great versatility. 4 Project: Big Wheel for Two Meters. I would suggest looking at a discone antenna since you would use it for just listening. Don't buy an antenna with large metal end caps. In FM broadcast, the antenna is usually mounted to the mast near the top. D3000N Super Discone Antenna The D3000N Super Discone Antenna is an ultra-wideband antenna covering amateur radio, commercial 2-way, cellular, air traffic control and various utility frequency bands. This antenna is often implemented in a skeleton form. Discone Antenna • Very wide bandwidth • Often used for wideband receiving applications such as scanners. Yes it will work, kind of with the factory antenna; which I’ve apparently already lost. Oh, it's fine for FM — but shortwave antennas need to be at least fifty feet long to be useful! Oh no! I can't put up some big, ugly antenna! All it takes is a very fine wire. Counting software: Spectrum Lab FFT and mAnalyzer program. The R-8500 is a great receiver and worth the relatively high price. The other antenna was made by Antenna Specialist who are still in business and may still produce the Super Scanner. Based on its feedpoint location, an "end-fed" is easer to install at my QTH than a center-fed dipole (I can barely fit a 2x7 m dipole). The difference would be hard to see. videos and guides available on the FreeDV website but the basics are straightforward. The patterns are usually presented in polar or rectilinear form with a dB strength scale. Ham Radio Outlet. Another reason is to dispel the many antenna myths that circulate in the amateur community. It will be effective but not as good as a simple dipole. This kind of antenna is suitable only for base stations, and is best as a antenna for scanners, however we are not necessarily interested communicating at the furthest range our equipment is capable of. The Discone Antenna. I had a discone on my tower until recently when the standoff broke in a storm. HF Digital Modes - Mike, KN6QI - 2007. DESIGN AND ANALYSIS OF DISCONE ANTENNA 1B. mfjenterprises. ARC Antenna Reference CD-ROM. The concept of an indoor discone is a heavy compromise, buying a 100-dollar antenna then placing it in the corner is pointless. contents what is antenna transmitter antenna receiver antenna yagi-uda antenna log - periodic antenna helix antenna parabolic antenna loop antenna antenna arrary 2. Discone antenna specifications.