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171 links

Antennas : G5RV Antennas : Magnetic Loop
  • Small Loop Antennas by AA5TB - Also known as Magnetic Loop Antennas, by AA5TB. Excellent article on construction tips and tecniques of a Small Loop antenna
    [ Hits: 2523 | Votes: 7 | Rating: 7.60 ]
  • N3KNZ Loop designs - Inspired by his first magnetic loop featured on this site, John takes loop building by the horns, and comes up with some excellent designs
    [ Hits: 2554 | Votes: 1 | Rating: 7.00 ]
Antennas : Moxon
  • MOXON Antenna Project - The MOXON antenna can provide radio amateurs with an excellent antenna system that is easy to homebrew and usually does not require any adjustment if made according to the dimensions specified by its designer. A typical MOXON rectangle can be built in a few hours, using X type of spreaders arrangement as discussed on this web site.
    [ Hits: 3946 | Votes: 7 | Rating: 9.14 ]
Antennas : Theory
  • Interference Cancelling System - The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna
    [ Hits: 1670 | Votes: 1 | Rating: 3.00 ]
Antique Radios : Collections
  • Boat Anchor Manufacturers - Excellent and comprehensive history of Boat anchors manufacturers. Here are some manufacturers that boat anchor collectors should look out for: Barker & Williamson Central Electronics Collins Radio Company E. F. Johnson Company Gonset Company Hallicrafters Hammarlund The Heath Company National Radio Company R. L. Drake
    [ Hits: 1756 | Votes: 2 | Rating: 9.50 ]
DX Resources : DX Foundations
  • Chiltern DX Club - The aim of the club is to promote HF operating in Amateur Radio and to encourage excellence, particularly in DXing and contest operating. We approach this through mutual assistance, by the support of DXpeditions, by the issuing of achievement awards and by whatever other means are deemed to be appropriate.
    [ Hits: 412 | Votes: 0 | Rating: 0.00 ]
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: 1457 | Votes: 5 | Rating: 4.00 ]
Operating Aids : Beginner's Guides Operating Aids : Beginner's Guides : What Amateur Radio is Operating Aids : Radio Spectrum
  • The ElectroMagnetic spectrum - Excellent poster representing the electromagnetic spectrum from 31.2 mHz to 6.52 EHz, PDF file poster designed by Anthony Tekatch
    [ Hits: 2019 | Votes: 5 | Rating: 6.00 ]
Operating Modes : Amateur Radio Astronomy
  • Luxorion ON4SKY website  updated - Thierry Lombry, LX4SKY (aka ON4SKY) has developped a excellent educational website mainly devoted to amateur astronomy but it includes also a large section dealing with amateur radio activities includes several interesting pages about radio astronomy and SETI
    [ Hits: 737 | Votes: 5 | Rating: 9.00 ]
Radio Scanning : Regional : Australia
  • Sydney Scanner Frequencies - One of the best compilations of frequencies in Sydney particularly SW. Include Police, other emergency people, Marine, the entire aircraft list for Sydney, RAAF squadron frequencies, UHF CB frequencies as well as a heap of miscellaneous frequencies like security, shoppin malls etc.
    [ Hits: 13064 | Votes: 59 | Rating: 6.00 ]
Shopping and Services : Ham Radio Stores
  • Lentini Communications, Inc. - Lentini Communications, Inc. was established in 1954. Located in Newington, Connecticut, home of the American Radio Relay League, retail and mail order outlet serves all your wireless communication needs. Stock amateur, CB and shortwave radios as well as Nextel cellular phones and more.
    [ Hits: 4684 | Votes: 15 | Rating: 6.28 ]
Shortwave Radio : Beginner's guides
  • Getting Started in SW Listening - Excellent and exaustive guide to shortwave listening offered by monitoringtimes, includes operating guides, technical suggestions, buying guieds, antennas implementations and more, all what is needed by shortwave listening beginners.
    [ Hits: 4508 | Votes: 14 | Rating: 7.36 ]
Software : RF Coverage Mapping
  • Radio Mobile  updated - Radiomobile is an excellent and very detailed radio path mapping software, vhf uhf propagation predictor This software is a tool used to predict the performance of a radio system. Windows freeware by VE2DBE.
    [ Hits: 7359 | Votes: 24 | Rating: 8.42 ]
Software : Satellite tracking
  • Gpredict - Gpredict is a satellite tracking program for Unix-like operating systems. In the begining (v. 0.1.x) Gpredict was just a GUI client to John Magliacane's excellent satellite tracking program, Predict, but due to performance problems it has been decided to include the tracking code directly into Gnome Predict (v. 0.2.0 and later).
    [ Hits: 1420 | Votes: 4 | Rating: 8.75 ]
Technical Reference : Alternative Power
  • Solar Panel Info - A great resource for Solar Panels, arrays of photvoltaic cells.
    [ Hits: 296 | Votes: 1 | Rating: 7.00 ]
Technical Reference : Radio Frequency Interference
  • Cellular Phone Interference - Cellular Phone Interference and 800 MHz Public Safety Radio Systems: An Unforeseen and Dangerous Problem
    [ Hits: 831 | Votes: 0 | Rating: 0.00 ]
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: 7392 | Votes: 5 | Rating: 4.00 ]
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