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Antennas : 160M Antennas : Feed Lines
  • Antennas and Feedlines - Long article on antennad and feed lines
    [ Hits: 7036 | Votes: 10 | Rating: 8.60 ]
  • 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: 1056 | Votes: 3 | Rating: 3.33 ]
Antennas : J-Pole
  • J-Pole theory  pop - The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
    [ Hits: 28536 | Votes: 24 | Rating: 6.60 ]
Antennas : Vertical Antennas : Wire
  • Transmitting Antennas For HF Broadcasting - This paper discusses a number of common used HF transmitting antenna systems and corresponding reference antenna codes. The latter was developed in close consultation with regional coordination groups ABU-HFC, HFCC-ABSU.
    [ Hits: 2142 | Votes: 2 | Rating: 5.50 ]
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: 1304 | Votes: 5 | Rating: 4.00 ]
Manufacturers : Antennas : CB
  • PCTEL Connected Solutions - PCTEL Connected Solutions develops and delivers high performance land mobile radio, WiFi, WiMAX, GPS, VHF, UHF and cellular antennas through its PCTEL, MAXRAD, Antenna Specialists, Bluewave and Wi-Sys brands
    [ Hits: 1307 | Votes: 22 | Rating: 6.26 ]
Manufacturers : Antennas : HF : G5RV
  • Radiowavz Antennas - Double Bazooka, G5RV, W5GI, NVIS, Fan Dipole antenna systems. Custom antnna Builder.
    [ Hits: 3025 | Votes: 16 | Rating: 9.01 ]
Manufacturers : Antennas : HF : Small & Stealth Antennas
  • Fractal Antenna Systems - Solution to your OEM needs and can meet your design or vended antenna requirements for antennas from 400MHz to 10 GHz.
    [ Hits: 2520 | Votes: 36 | Rating: 7.19 ]
  • EH Antenna Systems - Provide information relative to a new antenna concept. AM Broadcast antennas and amateur radio prototypes
    [ Hits: 12120 | Votes: 83 | Rating: 5.55 ]
Manufacturers : Antennas : HF : Vertical Antennas
  • KVK Antenna Systems - The manufacturer of the NuBeam, Vipole, and the multi-band Quad-Folded-Dipole (or QFD for short) antenna. Also have a unique multiband vertical which can combine operation on multiple HF frequencies as well as provide high gain on 50, 144 and 438MHz in a single antenna.
    [ Hits: 3384 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Antennas : Marine
  • Scout Telecomunicazioni - VHF, UHF, CB antennas for marine, mobile, base, remote radio monitoring and control system
    [ Hits: 1771 | Votes: 1 | Rating: 6.00 ]
Manufacturers : Antennas : Military
  • MARS Antennas - MARS, Israel's Antenna and RF System manufacturer, flat antennas for cellular, military broadband, multiband MF high power antenna
    [ Hits: 2588 | Votes: 6 | Rating: 7.00 ]
Manufacturers : Antennas : VHF UHF Microwave
  • Antennas by Antenex - Signal Propagation Systems, mobile HT base antennas
    [ Hits: 1273 | Votes: 1 | Rating: 10.00 ]
Manufacturers : Antennas : VHF UHF Microwave : Microwave antennas
  • Q-PAR Microwave Antennas - The company (founded in 1973) excels in the research, design, development and manufacture of microwave antenna systems & components. Our range includes horn, reflector, sinuous, spiral, LPDA, helical antennas, etc; antenna positioners, and many bespoke components.
    [ Hits: 310 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Antennas : VHF UHF Microwave : Yagi Antennas
  • Directive Systems Antennas - manufacturer of VHF and microwave antennas and related products, from 50 MHz through 10 GHz
    [ Hits: 3694 | Votes: 3 | Rating: 8.00 ]
Manufacturers : Microwave
  • Laipac Technology Inc. - We are committed to constantly improving our solutions in areas of GPS System, GPS Receivers, GPS Antennas, GPS Dataloggers, RF Modules, Wireless Security Systems, Automatic Vehicle Location (AVL) for real time and passive tracking
    [ Hits: 840 | Votes: 10 | Rating: 4.90 ]
  • KEYCOM Characteristic Technologies - Millimeterwave/Microwave transmission lines and components, Cryogenic temperature application transmission cables and systems, Permittivity(Dielectric rate) and Permeabillity measurement systems, Antennas, Radar systems
    [ Hits: 737 | Votes: 2 | Rating: 4.00 ]
Manufacturers : Test Equipment : Power Meter
  • Telewave - Telewave's innovative engineering produces the industry's toughest antenna systems. Yagi, Fiberglass Collinear, and Dipole models are available from 66-2500 MHz. Wattmeters, test equipment,rf power meters, duplexers, filters and cavities, transmitters combiners
    [ Hits: 1617 | Votes: 0 | Rating: 0.00 ]
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: 451 | Votes: 0 | Rating: 0.00 ]
Operating Modes : Stealth Amateur Radio
  • HF Antennas for restricted space - Arrl document about invisible antennas and indoor systems. It is important to consider that few compromise antennas are capable of delivering the performance one can expect from the full-size variety. But the patient and skillful operator can often do as well as some fellows who are equipped with high power and full-size antennas. The "cliff-dweller" may not be able to "bore a hole" in the band as often, and as easily, but DX can be worked successfully when band conditions are suitable.
    [ Hits: 6948 | Votes: 6 | Rating: 4.83 ]
Shopping and Services : Antennas
  • Custom Metalworks - Custom Metalworks - Tower and Antenna Installation, Removal and Repair. Specialists in the Installation of Rotating Tower Systems, Large Yagi Antennas and Arrays.
    [ Hits: 380 | Votes: 0 | Rating: 0.00 ]
  • Dino's Tower Service - Located in North Florida, specializing in tower installations, antenna assembly, and wire antennas. Experience includes a variety of antennas and towers from Rohn 25 up to Rohn 65 and rotating tower systems (KOXG).
    [ Hits: 897 | Votes: 1 | Rating: 1.00 ]
Shopping and Services : Regional : USA
  • Antenna Systems & Supplies - Antennas, cables, Grounding Equipment, shelters and towers.
    [ Hits: 1925 | Votes: 3 | Rating: 8.67 ]
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