am antennas

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am antennas

537 links - and 4 categories

Antennas : Beverage
  • Comparison of Beverage antenna - A ranking of receiving antennas based on noise being evenly distributed in all directions. These rankings are most accurate in the frequency range of AM broadcast, 160 or 80 meter bands
    [ Hits: 2682 | Votes: 2 | Rating: 6.50 ]
Antennas : Feed Lines
  • SWR: Maximum allowable VSWR - VSWR (voltage-standing-wave-ratio) represents the degree with which an antenna is "matched" to the system impedance. Most modern antennas do not require any tuning for optimum performance. VSWR is one of the easiest parameters to measure and VSWR meters are becoming very popular antenna installation tools
    [ Hits: 1120 | Votes: 3 | Rating: 3.33 ]
Antennas : J-Pole
  • Copper J-Pole Antennas - Conejo Valley Amateur Radio Club, article edited by Rory Eikland, KG6HCU and Ken Larson, KJ6RZ, they have had excellent experience building and using J-Pole antennas, and share their experience on planning VHF and UHF Jpole antennas.
    [ Hits: 12424 | Votes: 14 | Rating: 7.50 ]
Antennas : Multiband
  • A Magnetic Loop antenna for 7-21 mhz - If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter
    [ Hits: 3533 | Votes: 2 | Rating: 5.50 ]
Antennas : Theory
  • Antenna Selection Made Easy - This page will help you answer important questions about antenna selection before you talk to a supplier. After reading this paper, you should be able to better determine the most important parameters you need to know for your antenna selection criteria.
    [ Hits: 1886 | Votes: 2 | Rating: 3.00 ]
Antennas : Vertical
  • New HF antenna HB9ABX  pop - A new, revolutionary design allows the construction of small HF antennas, which provide the same efficiency as large antennas. This antenna can be built for all HF bands, from 10 to 80 m.
    [ Hits: 21702 | Votes: 34 | Rating: 8.89 ]
Manufacturers : Accessories
  • TX RX Systems Inc - TX RX Systems Inc. manufactures signal boosters, rf antennas, transmitter combiners, cell enhancers, land mobile radios, duplexers, receiver multicouplers, bidirectional amplifiers, bda, rf amplifiers, rf filters, rf cavity filters, rf combiners, rf components, in building rf coverage, repeaters, repeater amplifiers, rf management equipment, rf systems, and rf solutions. TX RX Delivers Reliable Solutions.
    [ Hits: 1481 | Votes: 5 | Rating: 4.00 ]
Manufacturers : Antennas
  • Digital Smart Antennas DiSA - Digital Smart antenna (DiSA) Automatically Adjusts over a wide band of frequencies.
    [ Hits: 781 | Votes: 2 | Rating: 5.50 ]
Manufacturers : Antennas : GPS
  • Autotena - Antenna manufacturer in Taiwan, products range are RF communication antennas ( CB, VHF, UHF, Dual band, Base Station, Marine, GPS,GSM, PCS, Cellular, DVB-T ) , Amplifiers , Mounting Kit ,Accessories & Related products.
    [ Hits: 4066 | Votes: 8 | Rating: 4.00 ]
Manufacturers : Antennas : HF : Mobile Antennas
  • Mobat Communications - HF-SSB radio products Accessories, Amplifiers and Antennas tuners. Established in 1995 as a joint venture between Motorola's Land Mobile Product Sector and Bartal Electronic Enclosures Ltd.
    [ Hits: 9190 | Votes: 8 | Rating: 3.50 ]
Operating Modes : Longwave
  • Antenna Noise and Signal Cancelling at LF - The fact that the phasing between a wanted signal and an unwanted signal can be different on different antennas is put to advantage. With this condition, the unwanted signal can be cancelled out by controlling amplitude and phase. The heart of the system is some form of phase control circuitry.
    [ Hits: 499 | Votes: 0 | Rating: 0.00 ]
Shopping and Services : Accessories
  • Batteries and gadgets - Your source for weather radios, communication headsets, 14 channel radios, M&M groovy radios, smithsonian crystal radio and weather station kits, line restrictors, antennas,ham radio accessories, and battery products.
    [ Hits: 1202 | Votes: 2 | Rating: 5.50 ]
Shopping and Services : Alternative Power
  • The HAM Contact - Mobile antennas, alternative power sources, ham radio accessories
    [ Hits: 1099 | Votes: 1 | Rating: 1.00 ]
Shopping and Services : Antennas
  • eBay Store - ON Antennas J Pole - Buy ham amateur radio, antenna, j pole items from ON ANTENNAS J POLE eBay Store. We sell ham amateur radio, stealth wire, 2 meter, vertical items on eBay.
    [ Hits: 754 | Votes: 1 | Rating: 6.00 ]
Shopping and Services : Regional : Europe : UK
  • Rocket Radio UK - UK based suppliers of CB, amateur radio equipment and DAB digital radios. Other products include antennas, base and handheld scanners, and accessories including microphones, books.
    [ Hits: 881 | Votes: 0 | Rating: 0.00 ]
Shopping and Services : Scanner stores
  • GI Joe's radio electronics - Dealer for Cb radios, Cb antenna & accessories Galaxy radio, Cobra cb radio, Ranger, Texas Star, Palomar. Police scanner, radar detector, GPS, GMRS, FRS, Wilson cellular amplifier & antennas. Owners manuals, schematics and links.
    [ Hits: 12094 | Votes: 79 | Rating: 7.93 ]
Software : Antenna analysis Technical Reference : HF Radios
  • Mizuho products - Mizuho Tsushin Co. was a small Japanese manufacturer of QRP radios and kits, shortwave receiver accessories, and AM broadcast band receiver kits and antennas
    [ Hits: 3035 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Radio Frequency Interference : Noise Reduction
  • Antenna Noise and Signal Cancelling at LF - By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.
    [ Hits: 7533 | Votes: 5 | Rating: 4.00 ]
  • QRM and noise reduction - You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM
    [ Hits: 4734 | Votes: 6 | Rating: 7.00 ]
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