Scanner Antenna: This is a simple but sensitive Home Made J-Pole Antenna that works great when You are limited as to a place to mount an external antenna !What You Will need: 1( 48 1/4 " twin lead wire2( Measuring tape3( Exacto knife or similar cutting tool4( elec. stereo coffee replied to doogie44's topic in Stereo Amplifiers & Pre-Amps Yes the wisdom of a dedicated power amp then becomes apparent. These could be made from a solid metal disc and a cone shaped sheet metal radial, and perform the same, but the wind loading would be increased. This ensures a reliable operation for many years. This is not the first time I have bought this antenna and the price for this one is the lowest I have seen. Moonraker was established in 1978. Double Discone Frequency Coverage Receive 1-1300 MHz Transmit 130-175 Mhz and 410-475 MHz Power handling 200 watts Length 1. Find Preamp Input Transformers related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of Preamp Input Transformers information. If one has an interest in distant or low altitude aircraft, basic air band antennas are not satisfactory. Volume 32, No. Ham Radio Antenna Electronic Devices Electronics Projects Hams Radios Electronics Gadgets Ham Worth talked about his new antennas at one of the club meetings and I asked him to forward me some pictures to post on the club web site. When fed at the base of the cone against ground, it becomes a wide-band monopole in the 6-10 MHz. It's called a discone because it is comprised of two parts, the disc, a group of elements parallel to the ground around the top, and the cone, the diagonal radial elements around the bottom. SIRIO SD 3000 N Discone Antenna 300 MHz-3 GHz This antenna covers. My discone sits on top of 2-10 foot mast. information on special offers and discount promotions) related to, but not limited to, products and solutions in the. Indoors or out, it's a good idea to mount your antenna on a 5' high galvanized steel mast. Now all you have to do is wait for a satellite to pass over. We’ve found pros and cons of the product. Receiving only antennas is a curation of 82 resources about , The K7TJR Array 160m antenna, The W2PM Mini Diamond Receiving Flag, Archimedean Spiral Antenna for RTLSDR, The Challenge: Receiving Antennas, W1TAG LF Receiving Loop. an M2 EB-144 mounted above an Icom AG-25 preamp at about 28', on an angled pole but the antenna's OK, a stacked pair of Olde Antenna Labs Mini-Wheel 23 cm loops hanging off an Icom AG-1200 preamp at about 28', a stacked pair of KU4AB 222 loops at about 25', and; an M2 EB-432 mounted above an AG-35 preamp at 31'. The discone antenna used for this study was an AOR Model DA3000, which is intended for use primarily as a scanner radio antenna, and claimed by the manufac-turer to be useable from 25 MHz to 2000 MHz. We also stock all the leading brands of amateur radio accessories and have one. By adding a LNA, it can be used as an active antenna, and the gain can be increased to larger than 10dBi, but it is changed to a received only antenna. Gone are the scanners' cross channel hang-ups, as well as much of the local interference from paging systems and other such annoyances. 7 MHz) and at this frequency, the antennas were very closely matched as assembled “out of the box” (see Table 1 ). 024 MHz Rtl-SDR R820T with 70cm Filter and Diamond X50 Antenna 40m above ground. 79 KB; Audio-Frequency Generator. The Diamond Discone antenna use stainless steel for most parts, the construction is very solid. In addition, specific models mentioned in the Antennas forum Like diamond antennas,discone antennas, airband antennas, vhf antennas, uhf discone and more are here for future reference. The Bandwidth of a signal is the difference between the signals high and low frequencies. MFJ Enterprises NEW Rigpi Radio Control System!! MFJ is a US distributor of Messi & Paoloni Coax Cables! MFJ IS NOW THE AUTHORIZED NORTH AMERICAN SALES AND SERVICE DISTRIBUTOR FOR XIEGU PRODUCTS! SITE NEWS: At 9 am GMT everyday, we will be performing server reboots causing the systems to be down for approximately 10 to 15 minutes!. Review: Uputronics Wideband Preamp Also called HABamp or Habamp, a low noise radio amplifier for radio signals between 100 MHz and 4 Ghz in a metal case with bias-T or 5V external power. Install the antenna aiming North. How to increase the range of a radio scanner Radio Scanning has come a long way since the old 'Rock Boxes' of the 1970's. It looks like the Superadio external. The antenna mounting is made very versatile via a cast aluminum bracket which is furnished with the antenna. This link is listed in our web site directory since Saturday Feb 15 2014, and till today "Preamp for RTL SDR" has been followed for a total of 1268 times. Welcome to the Diamond Scanner/Base Antennas page. The FAA has used discones at airports for many years. I grew tired of replacing the preamp every 1-2 years due to lightning damage (in spite of having a surge suppressor in line). The Diamond Discone antenna use stainless steel for most parts, the construction is very solid. no preamp, and this. Construction The antenna elements are constructed using a. I was also wondering why I can hardly get anything on the scanner with the TV antenna setup. Europe's leading Supplier and Distributor of Communications Equipment. Rust-free stainless steel is employed in major component parts making. Active Wideband Receiver Antenna for your SDR Dressler ARA-2000 Software Defined Radio ( SDR ) has finally reached a much broader mass of people, who wanted to play with RF technology, but didn't find the time or resources to learn all necessary skills, to build a hardware based radio. I'm using a decent discone antenna. With the preamp installed at the discone, I also plan to use a splitter so there will be some losses there. TROUBLESHOOTING If you are unable to locate the cause of a problem or solve it through the use of this chart, contact your near- est Icom Dealer or Service Center. In addition, it permits the loop antenna to have relatively high sensitivity and dynamic range compared to a non-active antenna. Do you have another product suggestion? The ARR,. I wondered if they are any good making distant signals more audiable, or just make things louder, including any interference and background noise!. Adding also 18AV HyGayn 10-80m - GP 144 & 20-1400Mhz ICOM discone. July 01, 2014 "MW115" compact portable active receive antenna released. The AMSAT preamp is a MAR7 device preamp and good to 500 MHz (at least, probably higher). Enter your search terms Submit search form: Transceivers: 2m FM transceiver in PDF - 2m. Loop, Discone and Broadband Antennas Radios Radio Control Ham And Cheese Ham Radio Antenna Wifi Build Your Own Phoenix Beams Electronics How to build a General Broadband Hexagonal Beam. Wellbrook Communications are the only UK company that supplies a complete range of Long wave loops, Medium wave (AM) loops and Shortwave (HF) receiving loop antennas for radio amateurs and listener hobbyists. The discone feed is the principal KH6BB antenna today. Vitually exclusive to us - the Desktop Double Discone, the absolute ultimate in portable scanner antennae. I have a close to the ground Beverage antenna in an out of the way area. As for grounding yes you have to ground the anttena. The antenna is composed of a disc shaped radiator on top of a cone shaped ground plane. An outdoor discone fed with coaxial cable will be far better and allow you to receive a wide variety of VHF/UHF transmissions including aircraft, broadcast, amateur and more. Of course it has its drawbacks but it's really convenient. Easy to fit, it can be suitable for the installation everywhere. The > discone does have the advantage that it doesn't have to be > aimed at the > satellite, but you're going to need a lot more antenna gain, > plus possibly > a preamp, to hear the satellite. A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. The discone feed is the principal KH6BB antenna today. When fed at the base of the cone against ground, it becomes a wide-band monopole in the 6-10 MHz. This site is for HAMs there want all the best from his radioamateur equipment. My initial test was placing it in line with my scanner, a Realistic Pro 2006, connected to a VHF UHF discone antenna at 10m. MY RADIO ROOM's PHOTO GALLERY. So while the discone picks up local sites very strongly, it may be of absolutely no help for communication of a neighboring county if there are no radios of those agencies being used locally. The AR5000A+3 is a good receiver, but you may find that in the Greater. The discone design emerged during World War II; its descriptive name is based on the original, sheet metal configuration of a cone topped with a disc. The antenna may be controlled from either a PE-140 pedestal, or C-8101 antenna controller. Ideal for 6/2/11/4 Meters, 70/33/23 CM ham bands. Reviewed by Bob Allison, WB1GCMAssistant Laboratory [email protected] Attic antenna: rotator upside-down work? 5. Robbins, Research and Development Report 8 August 1967. ON6MU's Radioamateur Homebrew electronics, schematics and antennas. While it is ideally suited to WiNRADiO VHF/UHF receivers, it can be also used to improve sensitivity of most third party receivers. a preamp is a must have for my location for getting. I wondered if they are any good making distant signals more audiable, or just make things louder, including any interference and background noise! Thanks in advance. Location: Graduate Research Wing Rooftop, 200 South 3rd street, Philadelphia, PA 19104, United States. The advantages to this particular model are that in addition to the gain and performance of a standard discone antenna, the DAP25 offers an additional low noise amplifier to provide higher gain for reception of weak signals. Hi, I was interested in that you mention the range at which you can receive aircraft at altitude being only 60 miles. No product specials are available at this time. AOR DA3000 Wideband Discone ANT11 $119. Browse our daily deals for even more savings! Free shipping on many items!. Is there a benefit of using full 275mm wave length or 1/2 or 1/4? Certainly, 1/4 is easier to fabricate. as a compromise the Double discone / GasFet amp combo is about as good as any setup I've tried over the past twenty years or so for general terrestrial radio comms monitoring. Basic Kits Do Not include connectors, miscellaneous hardware, enclosure, and require other Kit products etc. Whether you're in the air or on the ground, trust Icom to keep you in touch before flight. View the manufactures page for D3000N 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. 80/40 Horizontal loop, 160-10 OFCD, G5RV, 40/80 Sloper antennas  VHF/UHF -- Yaesu FT 8800 / Diamond D3000N Super Discone. I wondered if they are any good making distant signals more audiable, or just make things louder, including any interference and background noise!. Jaycar Electronics offers electronics kits, components, semiconductors, enclosures, batteries & chargers, power supplies, test equipment, tools, speakers, car sound. Antennas are reciprocal, meaning that an antenna designed for transmitting will work for receiving. Scanner Antenna: This is a simple but sensitive Home Made J-Pole Antenna that works great when You are limited as to a place to mount an external antenna !What You Will need: 1( 48 1/4 " twin lead wire2( Measuring tape3( Exacto knife or similar cutting tool4( elec. The stand alone 80m loop is approximately four feet in diameter. Volume 32, No. The Telewave ANT260K Wideband Discone Antenna 75 MHz-3 GHz, Wideband Discone Antenna 75 MHz-3 GHz, is an extremely rugged, wideband discone antenna for all frequencies between 75 MHz and 3GHz. D130J Super Discone Antenna, 25-1300 MHz w/ 3 Year Warranty. Broadband Wide Band Antenna 25-3000mhz Scanning Scanner Diamond Discone Base Antenna , Find Complete Details about Broadband Wide Band Antenna 25-3000mhz Scanning Scanner Diamond Discone Base Antenna,Discone Antenna,Wide Band Antenna,Discone Base Antenna from Communication Antenna Supplier or Manufacturer-Quanzhou Tianlu Communication Technology Co. No product specials are available at this time. Like the ARA-2000LL, it allows the low noise preamplifier to be located very close to the antenna, to optimize sensitivity. Yes, my raspberry is runing 24/7 with this setup. In short, this antenna works equally well, if not better, than my discone/12dB preamp combination. To get the most that you can out of the discone, you may need to improve the coax going up to the antenna, and possibly using a preamp to help boost the signal coming to your radio. 80 D-130J Super Wideband discone receive antenna, 25-1300Mhz $28. July 01, 2014 "MW115" compact portable active receive antenna released. My feeling is also that I miss some packets, but I grab 10 to 20 pakets a hour as first. Search for amateur radio and related products by product id, brand, category, and price. Please call us on 02087 190 180 now!. Sirio SD-3000 N Wide Band Discone Antenna 300-3000 MHz. In short, this antenna works equally well, if not better, than my discone/12dB preamp combination. It would be nice to have a preamp that I could use during the Tuesday evening activity contests as well as having one to use for receiving JT65b signals with EME as part of my Moonbounce project. Designed to provide reliable air-to-ground communications in the 225-400 MHz military aircraft band, the discone was eventually reconfigured to a lighter weight, less wind vulnerable construction. DOD 231 Q dual 32 band EQ. Icom has one focus: make the best marine equipment there is. I had it bookmarked back in December of 2004, the public side was redone sometime in 2005, and if there is still a link on the new public side I couldn't find it. Diamond D-130 Super Discone Antenna. Find Preamp Input Transformers related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of Preamp Input Transformers information. Preamp is activated. I've got the D130j discone -> 85ft of Jetstream Model# JT2015F Low Loss RG-8/U Equivalent to 9913 with Foam Insulator -> SDRplay RSP2pro. I have been thinking about using a suitable VHF / UHF preamp for a while now. Everyting about Homemade Discone Antenna I have seen several webpages describing home construction of disconeantennae need a preamp, probably near the antenna. Model BDA-230/A is similar to Model BDA-210/A but the frequency range of operation is from 2 to 300 MHz. A discone is and remains the best compromise between wide bandigheid and reception performance. HF/VHF BROADBAND DISCONE ANTENNA, MODEL BDA-230/A. Please call us on 02087 190 180 now!. Its low VSWR through the entire 75-3000 MHz band makes this discone antenna suitable as a high efficiency transmitting and receiving antenna. It has two 1-5/8 inch heliax feedlines. The 5-year warranty on Icom amateur radio transceivers (one year warranty on all Icom batteries and all accessories) shall not apply to customer-caused damage, such as by overvoltage, reverse polarity, moisture or water intrusion, excessive duty cycle, or to neglect or accidental or intentional or unintentional damage, transmitting into >2:1. At the time of promoting its alone innovation , altered now fit only for yourself. Discone Scanner / Ham / General Coverage Antenna. We’ve found pros and cons of the product. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. I've had an own built discone antenna and I should say that this Yagi works so much better! The only problem I can see is that Yagi is a directional antenna and you need to spin it around to find the best position for every frequency, depending on the direction of the airport and transmitters, while a discone antenna works in all directions. Rappaport The discone antenna is well documented in the literature and has The measurement set-up consisted of a UHF signal generator,. Police Scanner Antenna Basics. , but buried in the noise. Receiving only antennas is a curation of 82 resources about , The K7TJR Array 160m antenna, The W2PM Mini Diamond Receiving Flag, Archimedean Spiral Antenna for RTLSDR, The Challenge: Receiving Antennas, W1TAG LF Receiving Loop. Monoband or multi-band. Figure 7 shows the LST variation in a band from 150. agr alim ap med arh astr at auto autom av cf chim cstr drum el en fiz foto geod geog geol hc hidr ind chim inf l log mat man. Welcome to our Used gear page. Telewave discone antennas are designed to survive the most extreme conditions, where conventional antennas often fail. Chalk up another victory for my cheap Radio Shack discone! During the 8 year course of ownership of this antenna, it has survived tropical storms and hurricanes in Florida, blizzards and 'noreasters in Rhode Island and most recently my little discone acheived another victory; surviving a direct hit from Hurricane Ike. Check our auctions HERE. ADS-B is a broadcast system which can be used to track aircraft like a radar. 16 element discone aerial specifically designed to match the AR3000 receiver-of course it is suitable for other similar coverage receivers. 25 kHz increments. The next question is what antenna to use. Gone are the scanners' cross channel hang-ups, as well as much of the local interference from paging systems and other such annoyances. , but buried in the noise. Vertical or directional. Supplied with 15m of coaxial cable and terminated in a BNC plug. It's called a discone because it is comprised of two parts, the disc, a group of elements parallel to the ground around the top, and the cone, the diagonal radial elements around the bottom. The AMSAT preamp is a MAR7 device preamp and good to 500 MHz (at least, probably higher). Calibrated to provide dBm readings (roughly). low-noise preamplifier for use with mast mounted Discone, Log periodic or Yagi type broadband scanner antennas. The WiNRADiO WR-G65DDC 'EXCALIBUR Sigma' is a top performance, direct-sampling, software-defined, wide-band, two-in-one HF/VHF receiver with two frequency ranges from 1 kHz to 88 MHz and from 118 MHz to 190 MHz. In addition, specific models mentioned in the Antennas forum Like diamond antennas,comet, yaesu, icom, watson cushcraft, MFJ and more are here for future reference. Eine konkurrenzlose Bandbreite, kombiniert mit hoher Richtgenauigkeit und hohem Gewinn sind die Schlüsselfaktoren für den Erfolg dieser Antennen. Robbins, Research and Development Report 8 August 1967. Proceedings of the 1995 Central States VHF Conference. pdf Ultra Low Noise High Performance Zero IF Quadrature Product Detector and. Install the antenna aiming North. Ideally, an antenna should be mounted at the point where the signals are the strongest, though often this is impractical or impossible. As my discone will become an 8 leg spider, I don't see the benefit of building. The WiNRADiO WR-G65DDC 'EXCALIBUR Sigma' is a top performance, direct-sampling, software-defined, wide-band, two-in-one HF/VHF receiver with two frequency ranges from 1 kHz to 88 MHz and from 118 MHz to 190 MHz. 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 control, and various ultra-frequency bands. Ideas For Mounting A Discone Needed. A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc. Upside down vertical? 4. A Diamond Discone antenna (circled in red) was chosen for off-air monitoring of AM and FM stations. I am far from an expert on this, so I dn't know which to get, all I know is that obviously, I want a low-loss cable. Sirio SD 3000 N 300 MHz-3 GHz Discone Wide Band Antenna is the best everything published the foregoing workweek. My initial test was placing it in line with my scanner, a Realistic Pro 2006, connected to a VHF UHF discone antenna at 10m. The aperiodic loop antenna configuration includes loop/preamplifier elements, in an “end fire” array, with an interconnecting transmission line coupling each element. The element spacing has been carefully chosen to provide optimum directional characteristics for both long and short haul, point-to-point HF communication using the ionosphere. I wondered if they are any good making distant signals more audiable, or just make things louder, including any interference and background noise! Thanks in advance. I get great reception on 11 meter (CB) and VHF (marine) bands. Hardware: USRP N200 + UBX40 daughterboard, connected to wideband discone antennas. YouTube user nerdsville shows a signal reception comparison of his discone antenna and his home made 1090 MHz tuned ADS-B collinear antenna in this video. First, take the 60 inch piece of twinlead and strip back about 1/2 inch from one end. 5dBi Polarization Vertical. Aerialforce - Local provider of TV Aerial and Satellite solutions. The preamp ought to have more gain than the loss of the splitter, by at least 10dB--or more if you can tolerate some overload on stronger signals. Basic Kits Do Not include connectors, miscellaneous hardware, enclosure, and require other Kit products etc. A cheap and cheerful solution is to place the preamp and power supply in an electrical junction box, add a switch for On/Off, place the preamp right at the antenna, and turn on power when you need it. Now all you have to do is wait for a satellite to pass over. Behalve ontvangen tussen 75 en 3000 MHz is de HamKing DS-3000 daarnaast ook geschikt voor zenden op de banden 144 MHz, 430 MHz, 900 MHz en 1296 MHz. Rohn Tower. All antennas are Broadband, Wideband Active Loop Antennas; the result of continual research and ongoing improvement over several decades. Search for amateur radio and related products by product id, brand, category, and price. The Diamond D220R mini discone antenna receives solid from 100 to 1600 MHz. This preamp is for 50 to 2000 MHz. We also stock all the leading brands of amateur radio accessories and have one. This link is listed in our web site directory since Saturday Feb 15 2014, and till today "Preamp for RTL SDR" has been followed for a total of 1268 times. Since then we have become the largest manufacturer of Amateur, CB, and Scanner antennas and accessories in the UK. World's Largest Supplier of Amateur Radio, Ham Radio, and Communication Equipment. The band is noisy (sounds like power line noise on my handheld) and the levels of continuum are variable. No product specials are available at this time. In short, this antenna works equally well, if not better, than my discone/12dB preamp combination. Best TV antenna for:. Since 1989, the recognized Leader in Computer Control. Telewave discone antennas are designed to survive the most extreme conditions, where conventional antennas often fail. The well packed box came with the preamp itself, as well as a 13. A Discone is a good general antenna for the rtl-sdr as they are extremely wideband, and can be expected to be useful over almost the entire frequency range that is tuneable by the the rtl-sdr. Since then we have become the largest manufacturer of Amateur, CB, and Scanner antennas and accessories in the UK. 17 KB; Balun Designs for Wireless - Mixers, Amplifiers and Antennas. The MuTeK BBBA 500u also used a similar circuit, but only using one stage of amplification. Originally designed for 260MHz so that a discone antenna can receive the military satellites, this preamplifier is available to order at frequencies from 170 to 2,000MHz. stereo coffee replied to doogie44's topic in Stereo Amplifiers & Pre-Amps Yes the wisdom of a dedicated power amp then becomes apparent. Sirio SD 2000 N Discone Antenna 100 MHz - 2 GHz. As you go up in frequency the relative size verses the wavelength becomes larger and you get higher gain but the radiation angle also goes up. Ham Radio Antenna Electronic Devices Electronics Projects Hams Radios Electronics Gadgets Ham Worth talked about his new antennas at one of the club meetings and I asked him to forward me some pictures to post on the club web site. The Discone 1411 antenna is a great choice for CB multi-band, dual banders for full-duplex transmissions, remote control and cordless phones. I would expect a good airband antenna to get high altitude aircraft (30-40,000 feet) out to 200 nautical miles as that's what I achieve with my folded dipole and have achieved with other airband antennas in the past. Free shipping. At 2 feet above ground found a pre-amplifier to be unnecessary. This site is for HAMs there want all the best from his radioamateur equipment. Whatever radio discone antenna styles you want, can be easily bought here. THIS is why a MAST mounted preamp works wonders however finding a realy broadbanded one can be a problem 20 db of preamp gain at the antenna means you can hear things 10 TIMES as weak. 95 Ramsey Broadband Preamp PRE 2 $59. MOR Mobile Roof Mount Antenna 30-50, 130-174, 450-512 & 800-950 MHz. So the antenna I'm thinking about doing might be * way too large for my property. It endeavors to provide the products that you want, offering the best bang for your buck. Ruggedized Wide Band Omni Discone Antenna 75-3000 MHz. Discone Mounted Upside Down? 2. 51 KB; Automobile Ignition Substitute. A little while ago, I purchased a Jetstream JTD1 discone antenna off ebay for $34 (+shpping). Recommend the use of thick wall copper pipe, available in most hardware stores. The American Radio Relay League (ARRL) has for some years published the Proceedings of various regional and national VHF, UHF and Microwave conferences. By adding a LNA, it can be used as an active antenna, and the gain can be increased to larger than 10dBi, but it is changed to a received only antenna. Radio Scanner Antenna Double Discone Desktop with RG58 Coax + BNC Plug | eBay. Sorry if a similar question is buried amongst the older posts, they take some searching when a word is commonly used I am considering purchasing a pre-amplifier with in built filtering akin to the M100 by Moonraker, I have watched a few you tube videos and they seem to perform reasonably well but a few videos is not enough to swing my decision so I thought I would ask the forum members what. Chalk up another victory for my cheap Radio Shack discone! During the 8 year course of ownership of this antenna, it has survived tropical storms and hurricanes in Florida, blizzards and 'noreasters in Rhode Island and most recently my little discone acheived another victory; surviving a direct hit from Hurricane Ike. All About The Discone Antenna: Antenna Of - FARS All About the Discone Antenna: Antenna of Mysterious Origin and Superb Broadband digital television (DTV). Try to make the attenuation of level from source which has the best possible audio, to your power amp as simple as possible, and if you can also remove as many contacts where the audio signal passes. Review: Uputronics Wideband Preamp Also called HABamp or Habamp, a low noise radio amplifier for radio signals between 100 MHz and 4 Ghz in a metal case with bias-T or 5V external power. Diamond D-130 Super Discone Antenne The D130 Super Discone Antenna is an ultra-wideband. Active Wideband Receiver Antenna for your SDR Dressler ARA-2000 Software Defined Radio ( SDR ) has finally reached a much broader mass of people, who wanted to play with RF technology, but didn't find the time or resources to learn all necessary skills, to build a hardware based radio. agr alim ap med arh astr at auto autom av cf chim cstr drum el en fiz foto geod geog geol hc hidr ind chim inf l log mat man. Jim M75 Pre-Amplifier High quality pre-amp with variable gain control and band pass filters to minimize interference. Available for $45 equivalent from the manufacturer in the UK, or for $45 from airspy. Frequency coverage is from 500 MHz to 18 Ghz, (18-40 Ghz via an optional frequency extender). This is a great working scanner antenna, mine is just 30 feet off the ground 15 foot above the shed in my backyard and I receive signals from a police department 100 miles from my house, airplanes 200 miles from my house tracked and located from flight radar. Excellent for testing various transmitters on single coax. The well packed box came with the preamp itself, as well as a 13. The panel can mounted to the wall; great for minimising space. Before writing about using technology to save you money he spent 20 years working in the tech sector as a sysadmin, an analyst, and an enterprise architect. pdf Ultra Low Noise High Performance Zero IF Quadrature Product Detector and. Free delivery and returns on eligible orders. 4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan VERTEX STANDARD US Headquarters 10900 Walker Street, Cypress, CA 90630, U. stereo coffee replied to doogie44's topic in Stereo Amplifiers & Pre-Amps Yes the wisdom of a dedicated power amp then becomes apparent. Diamond D-130 Super Discone Antenne The D130 Super Discone Antenna is an ultra-wideband. Entitled ?A New Type of Pre-amplifier for 145 MHz and 435 MHz Receivers? By M Martin, DJ7VY. No product specials are available at this time. The > discone does have the advantage that it doesn't have to be > aimed at the > satellite, but you're going to need a lot more antenna gain, > plus possibly > a preamp, to hear the satellite. a preamp is a must have for my location for getting. Rappaport The discone antenna is well documented in the literature and has The measurement set-up consisted of a UHF signal generator,. Amounts shown in italicised text are for items listed in currency other than Euros and are approximate conversions to Euros based upon Bloomberg's conversion rates. Guitar Amp Books for Professional Builders Books, Tutorials, and Technology for Guitar Amplifier Circuit Design. You tune your radio to the desired frequency, then you tune the prescaler to peak the signal. the problem with pre-amps, especially wideband pre-amps, is that they will amplify EVERYTHING. By using a multicoupler, each radio will operate like it is the only radio connected to your antenna and as if it was directly connected to the antenna. SIRIO SD 3000 N Discone Antenna 300 MHz-3 GHz This antenna covers. At the time of these attic adventures, my attic antennas included: 2 m and 440 J-Pole; 2 m and 440 slim jim; 9:1 unun fed 32 foot longwire, a Diamond Discone antenna and a noise dipole cut for 20 m to use with my MFJ 1026 noise canceling filter. The RTL2832U / Elonics E4000 SDR Radio – AKA “The $20 SDR” HRS Staff Featured June 12, 2012 | 9 There has been a pretty good buzz about the “$20 SDR Radio” since the good folks over at Osmocom figured out how to convert a $20 DVB-T usb dongle into an SDR radio using software only. For local and moderate distances, such antennas will deliver signals well above the noise level. Few months, we saw a lot of people wearing or using these products. One conical antenna, long popular among scanner hobbyists, the Figure 6 — Predicted SWR of three antennas optimized for UHF TV. As my discone will become an 8 leg spider, I don't see the benefit of building. Discone antennas - no they don't look like John Tr NOTICE: TO ALL CONCERNED Certain text files and messages contained on this site deal with activities and devices which would be in violation of various Federal, State, and local laws if actually carried out or constructed. If you are looking for a broadband scanner antenna, you may be lured towards the direction of the discone antenna. When fed at the base of the cone against ground, it becomes a wide-band monopole in the 6-10 MHz. Discone 1411 provides continuous reception up to 1300 MHz and allows transmission on all amateur and CB radio bands from 25 MHz. The panel can mounted to the wall; great for minimising space. Harvest D220R 100-1600 Mhz Mini Discone Mobile Scanner Antenna(Free US Shipping) $79. Ideally, an antenna should be mounted at the point where the signals are the strongest, though often this is impractical or impossible. 38$ inline preamp (optional but strongly recommended!) unless your receiver is extremely close (possible with dongles but durability and grounding from interference is questionable) you really need an amp as the discone has no gain and you will lose most of your signal, unless you go crazy with expensive low loss coax. The Dressler EWPA-5200 LL is a very high performance, low-noise preamplifier designed for mast mounting on Discone, Log Periodic or Yagi type broadband scanner antennas. UHF SATCOM refers to satellite repeaters that operate between 240 MHz and 270 MHz. The antenna generally sold for scanners nowadays is the discone, but any of those is going to require a more serious mount than simply being screwed to the fascia board, as can be done with these skinny whips. (Click to Enlarge) Next, I got out the spectrum analyzer and connected it to the preamp output. 12) Examine using a receiver with pan display covering 70 to 150 MHz and step by 1. Important Information - Please Read. Discone antennas - no they don't look like John Tr NOTICE: TO ALL CONCERNED Certain text files and messages contained on this site deal with activities and devices which would be in violation of various Federal, State, and local laws if actually carried out or constructed. The PC can read data from all the signals at once easily. There are plenty of pre-amps to choose from. Location: Graduate Research Wing Rooftop, 200 South 3rd street, Philadelphia, PA 19104, United States. We sell Radioworld HF Discone Antenna at radioworld with great customer service and technical support Hambid for Ham radio, scanners, DAB, Shortwave & CB radios [email protected]. The capacitor was shipped promptly after a phone call to Frank. Your Stridesberg eight port multicoupler arrived and is in operation (complete with RS 50 ohm loads on unused ports) with a Grove Pre-5 preamp on the front end, coupled to a Diamond discone antenna. More information about rtl-sdr and ADS-B here. The Discone antenna is the most suitable form for a wide band omni-directional antenna. The antenna mounting is made very versatile via a cast aluminum bracket which is furnished with the antenna. Description. 95 Austin Condor ANT 14 $34. 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 control, and various ultra-frequency bands. Tram Antenna found in: CB Base Antenna, No Ground Plane, For All Applications, Scanner 25MHz-1,300MHz VHF/UHF Super Discone Base Antenna Plus CB Transmit Bands, Oil-Filled Coil CB Antenna, BIGCAT-9 CB Antenna, 46" VHF Marine. It is jointed with an inner sleeve of 1" tube and held with metal screws. No product specials are available at this time. Thank you, Eric. With an output impedance of 50 (nominal), it can be used with any 50 instrument. Don Keith N4KC describes his top five antennas for amateur radio that enable new ham radio operators to get on the air quickly and begin making contacts. 82 KB B; BIOS Data Area Information. Important Information - Please Read. The antenna may be controlled from either a PE-140 pedestal, or C-8101 antenna controller. An outdoor discone fed with coaxial cable will be far better and allow you to receive a wide variety of VHF/UHF transmissions including aircraft, broadcast, amateur and more. Whether deployed with two receivers on a single 19-inch rack, or on your desk at home, the IC-R8600 is an impressive upgrade to any serious SIGINT team, interference research team, or the avid shortwave or receiver enthusiasts. A discone is and remains the best compromise between wide bandigheid and reception performance. Active Wideband Receiver Antenna for your SDR Dressler ARA-2000 Software Defined Radio ( SDR ) has finally reached a much broader mass of people, who wanted to play with RF technology, but didn't find the time or resources to learn all necessary skills, to build a hardware based radio. New: Now with integrated product filter! Choose your base antenna quick and easy with the filter below. Your best bet is to get a wide range outside scanner antenna (try a Discone), and get it mounted as high as possible, and un-obstructed. My first priority when I get a serious mount, will be to put up a yagi FM antenna, such as my AP9. Using information from a series of engineering lectures by John "Jack" Kuecken (now SK) and correspondence with Stew W1BB, I installed my first "real" Beverage antenna. The Workman B-100 is a high-performance, well-constructed CB antenna that can be used virtually anywhere. Make this link a must read. Welcome to the Scanner Antennas page. SIRIO SD 3000 N Discone Antenna 300 MHz-3 GHz This antenna covers. Another page on a home made Discone also designed for a minimum of 130MHz is here with some brief instructions links to design calculators. If you are planning to use an amplifier to boost your signal, make sure you also pair it with a high quality antenna and scanner. It is used by military as well as other commercial services worldwide. An antenna constructed from separate elements is lighter and more cost effective to construct. Monoband or multi-band. This preamp is for 50 to 2000 MHz. An active multicoupler also replaces any losses due to the splitting of the signal with a small pre-amplifier. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. 95 Grove Scanner Beam III ANT 03 $69. Excellent for testing various transmitters on single coax. The Discone antenna is the most suitable form for a wide band omni-directional antenna. For LW and MW and 80m I use a home-made loop aerial about a meter square mounted on a pole away from the house and CAT5 cables. 21 S11-Measurements in the 13-cm-band: Matching a Discone-Broadband antenna …133 Matching measurements on a Discone broadband antenna …133. Moonraker M-100 Professional Scanner Pre Amplifier by mounted under a discone in the loft, a power cable runs up with the antenna down lead allowing me to switch. If you're a newcomer or old hat, or anywhere in between, when installing antennas, Safety First. 95 AOR DA5000 UHF Discone ANT72 $389. Discone Antennas products from Diamond online. And it can be as simple as hanging a piece of zip cord from a tree limb. A small LF loop antenna Klaus Betke This paper describes a loop antenna for receiving purposes in the frequency range 10 kHz to 150 kHz; with reduced performance it can be used up to 600 kHz. Proceedings of the 1995 Central States VHF Conference.