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293 links - and 5 categories

Antennas : 160M
  • Invisible DX antenna for the low bands - Article by DK5WL describes a multi-band DX antenna for the 160m-40m amateur radio bands with low visibility but great performance for long distance communication.
    [ Hits: 6505 | Votes: 1 | Rating: 1 ]
Antennas : 4M
  • The 50 MHz DK7ZB Quadlong - The Quadlong antenna for the six meter band. This antenna feature a total gain of 6,4 dBd, F/B 21 dB and is also available in 70MHz version. Includes detailed pictures and plot diagrams.
    [ Hits: 1316 | Votes: 27 | Rating: 9.04 ]
Antennas : 6M : 6 meter Yagi Antennas Antennas : 70cm
  • Portable 70cm Quadruple Quad Beam - A suitable high gain 70cms antenna for SOTA operation was sought that did not have the drawbacks of a long Yagi antenna, principally a narrow beamwidth and bandwidth.
    [ Hits: 3338 | Votes: 3 | Rating: 8 ]
Antennas : Baluns
  • Magnetic longwire balun - Magnetic longwire baluns 1:9 combined with ground, a 1:2 and 1:1 balun connections by ON6MU
    [ Hits: 4283 | Votes: 8 | Rating: 5.13 ]
  • QRP Magnetic longwire balun with VHF-splitter - This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.
    [ Hits: 2987 | Votes: 3 | Rating: 7 ]
Antennas : Feed Lines : Choke
  • Homebew RF chocke - RF Choke to prevent hf currents on the feedline
    [ Hits: 3137 | Votes: 3 | Rating: 10 ]
Antennas : Feed Lines : Open Wire
  • Open Wire Feed Line a second look - Put up the longest dipole you can fit, feed it with open wire line, connect it to the balanced output of your tuner and poof! Instant multiband antenna. Is life really that simple?
    [ Hits: 2444 | Votes: 7 | Rating: 6.79 ]
Antennas : Mobile
  • W5JGV Mobile Antenna - A High Efficiency Extended Length Mobile Antenna The antenna itself is 3.42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip.
    [ Hits: 3944 | Votes: 5 | Rating: 6.2 ]
Antennas : Theory
  • HF insulation, the pitfalls - Although insulation may seem relatively insignificant in the larger picture, on it depends the quality of your performance on air and how long you will be communicating for.
    [ Hits: 470 | Votes: 0 | Rating: 0 ]
Antennas : Theory : Antenna Gain
  • Antenna Gain to ERP - A radio's transmitting power can be concentrated along the horizon by use of a GAIN antenna. Although you may still be transmitting with four watts of power, your effective radiated powerwill be greatly increased. This table shows the effects of antenna gain on a transmitter with 4 watts of transmit power.
    [ Hits: 1306 | Votes: 4 | Rating: 4.5 ]
Antennas : Yagi Ham Radio : Blogs Ham Radio : Clubs : North America : USA : Michigan Ham Radio : Clubs : North America : USA : New Hampshire
  • Cheshire County DX ARC - The Cheshire County DX Amateur Radio Club - or CCDX ARC - Has been around for well over a decade. The longest running club ever in this area.
    [ Hits: 377 | Votes: 0 | Rating: 0 ]
Manufacturers : Antenna Parts
  • Anteny SP1BKS - Antenna manufacturer from Poland, produce dipole wire antennas, W3DZZ FD4 Windom and long wires, baluns, dealer for toroids and connectors managed by Leszek Mlynarczyk SP1BKS
    [ Hits: 2453 | Votes: 2 | Rating: 5.5 ]
Operating Aids : Distance & Bearing
  • Convert addresses to Latitude and Longitude - This online tool will convert any street address into latitude and longitude and vice-versa by executing queries to several online mapping services like googlemap geocoder maporama terraserver and more by Stephen P. Morse
    [ Hits: 2266 | Votes: 5 | Rating: 3.8 ]
Shopping and Services : Test equipment : Oscilloscope
  • Scientific Surplus - Buy, sell and trade electronic and scientific instruments. Oscilloscopes, microscopes, signal generators, RF equipment, short & long wave radios, meters and wattmeters, detectors (radiation, metal), spectrum & network analysers military equipment
    [ Hits: 635 | Votes: 0 | Rating: 0 ]
Software : Linux : DX Cluster Clients
  • Xdx - xdx is a dedicated Linux network client for amateur radio operators who want to exchange DX (long distance) radio information
    [ Hits: 1224 | Votes: 3 | Rating: 6.33 ]
Technical Reference : Dummy Loads
  • A 25 Watt Dummy Load - Dummy load described here can be used for up to 35 watts for short transmissions, and up to 25 watts for longer periods.
    [ Hits: 4670 | Votes: 5 | Rating: 2.8 ]

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