frequencies

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frequencies

264 links - and 6 categories

Antennas : 2M
  • Slim Jim Antenna - Simple but effective antenna for VHF or UHF frequencies.
    [ Hits: 1319 | Votes: 7 | Rating: 5.14 ]
Antennas : Baluns : 1 to 1 Balun
  • Practical Guanella 1:1 balun - This article proposes a lossy transmission line model of a practical Guanella 1:1 balun that is effective for all frequencies within and immediately adjacent to the pass band
    [ Hits: 3380 | Votes: 2 | Rating: 1.00 ]
Antennas : Magnetic Loop
  • Balcony and pedestrian mobile motor tuned loop - This antenna was designed to meet the requirements of a light body worn small magnetic loop covering all the frequencies continuously from 7 MHz to 29.4 MHz
    [ Hits: 2681 | Votes: 0 | Rating: 0.00 ]
DX Resources : Beacons : Beacon stations
  • OH Beacons - List of OH beacons running on HF VHF and higher frequencies
    [ Hits: 909 | Votes: 2 | Rating: 6.00 ]
Internet and Radio : Sounds
  • Digital Operating Modes - Description, frequencies and sound samples of most popular amateur radio digital modes by DG8FBV
    [ Hits: 996 | Votes: 4 | Rating: 8.00 ]
Manufacturers : Antennas : HF
  • QHtenna - The QHtenna Turnstyle antenna system offers horizontal omni-directional antennas for the Ham frequencies in the VHF/UHF range of 50 Mhz to 432 Mhz. The Crossed Field Antenna" (CFA) by QHtenna offers a small antenna for limited space, maritime mobile, and seasonal DX work.
    [ Hits: 763 | Votes: 0 | Rating: 0.00 ]
Operating Aids : Radio Spectrum
  • Hellschreiber frequencies - Suggested frequencies for HELLSCHREIBER operation by the feldhell club
    [ Hits: 1827 | Votes: 6 | Rating: 7.00 ]
Operating Modes : Ham Radio Balloons
  • Radiosonde : how to listen to them - Frequencies and location of every meteo radiosonde launching centres in Europe. Equipments, antennas, history, SondeMonitor and BalloonTrack tutorials
    [ Hits: 549 | Votes: 3 | Rating: 6.67 ]
Operating Modes : MFSK
  • Olivia, the Magic Digital Mode - Olivia MFSK digital communications are becoming popular in amateur radio because Olivia is one of the most robust methods of text keyboarding, that can perform superbly for long distance communications. Olivia frequencies, format and software
    [ Hits: 1765 | Votes: 8 | Rating: 8.38 ]
Operating Modes : PSK31
  • PSK31 How To Guide - About PSK31, Station Setup, Operation, and Frequencies
    [ Hits: 1037 | Votes: 5 | Rating: 8.20 ]
Radio Scanning : Aeronautical Radio Scanning : Regional : Australia Radio Scanning : Regional : Europe
  • Frequenzdatenbank.de - Frequency database for Germany. Emergency services, aircrafts, radio and paging system with over 2000 frequencies from all over Germany.
    [ Hits: 1182 | Votes: 13 | Rating: 3.70 ]
Radio Scanning : Regional : USA Radio Scanning : Scanner Frequencies
  • CityFreq - United States Scanner Frequencies, Phone Numbers, and IP Addresses
    [ Hits: 1456 | Votes: 9 | Rating: 6.56 ]
Shopping and Services : Antennas : VHF Antenna
  • Specialist Antennas - Antenna products and accessories for commercial, industrial, Emergency Service and military applications covering VHF, UHF, TETRA, ISM and GSM frequencies and beyond.
    [ Hits: 379 | Votes: 0 | Rating: 0.00 ]
Software : Filter Design
  • Filtroid - Filtroid is an extremely easy-to-use program for synthesizing microwave filters. It can be used to design practically all filter types from audio to microwave frequencies as well as amplitude and delay equalizers and attenuators.
    [ Hits: 2310 | Votes: 2 | Rating: 3.00 ]
Technical Reference : Filters
  • Interdigital bandpass filter designer - Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength
    [ Hits: 958 | Votes: 6 | Rating: 7.67 ]
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