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Antennas : 6M : 6 meter J-Pole Antenna
  • Dual Band J Pole - Dual band J pole operational over the entire 6Mtr band (50 - 54MHz) and the entire 2Mtr band (144 - 148MHz), slightly favouring the upper half of both bands by VK6YSF
    [ Hits: 4092 | Votes: 7 | Rating: 5.71 ]
Antennas : EH
  • DL7AHW Spraycan EH Antennas - Hairspray-can EH Antennas for shortwave and online programs. Small magnetic (H) antennas (Loops) have a good efficiency for the upper bands (20/15/10 meter band) and also in contrast to E-antenna a defined radiation direction.
    [ Hits: 310 | Votes: 2 | Rating: 8.5 ]
Antennas : Log Periodic
  • Log Periodic Antenna Design  pop - calculates the dimensions and spacings of the elements needed to build a log periodic antenna, given tao, sigma and the lower and upper cutoff frequencies.
    [ Hits: 34817 | Votes: 294 | Rating: 6.05 ]
Antennas : Multiband
  • ZS6KMD 20-40m Multiband Dipole - The dipole shown in this document is installed in an inverted Vee configuration, with two leg elements on each side held parallel to each other by 21cm spacers. The upper leg is for 40m and the lower leg for 20m. The spacers are made of 7mm plastic garden hose support for garden sprayers cut to 21cm.
    [ Hits: 524 | Votes: 0 | Rating: 0 ]
Antennas : VHF UHF
  • The Skew-Planar Wheel Antenna - This is a very useful aerial design,forgotten for 40 years. This antenna offer a low omnidirectional pattern and has circular polarization. Can be used as a beacon antenna and simulations are for U-VHF and upper
    [ Hits: 607 | Votes: 3 | Rating: 4 ]
Ham Radio : Band Plans : Frequency coordination
  • UNYREPCO - Upper New York Repeater Council, Inc, support the frequency coordination needs of the Amateur Radio repeaters operating in its area
    [ Hits: 224 | Votes: 0 | Rating: 0 ]
Ham Radio : Blogs : Europe : UK
  • G7IZU RRD WEBLOG - Information related to the G7IZU Radio Reflection Detection page. The detection of meteors, aurora and other phenomena through the use of signals reflected from ionization in the upper atmosphere.
    [ Hits: 273 | Votes: 0 | Rating: 0 ]
Ham Radio : Blogs : USA
  • AJ8MH Web Site - Marquette, in the upper peninsula of Michigan (MI)
    [ Hits: 333 | Votes: 1 | Rating: 8 ]
Ham Radio : Clubs : North America : USA : Michigan
  • W8CDZ Copper Country Radio Amateur Association, Inc. - Serving the Copper Country in Michigan's Western Upper Peninsula. Copper Country communities include Calumet, Copper Harbor, Lake Linden, Houghton, Ontonagon, Baraga, and other nearby towns.
    [ Hits: 298 | Votes: 2 | Rating: 10 ]
  • Hiawatha Amateur Radio Association - From the Upper Peninsula of Michigan along the southern shore of Lake Superior
    [ Hits: 330 | Votes: 1 | Rating: 8 ]
  • Straits Area Amateur Radio Club - The SAARC serves the northern portion of Michigan\'s Lower Peninsula and the southeastern portion of the Upper Peninsula
    [ Hits: 214 | Votes: 0 | Rating: 0 ]
Ham Radio : Clubs : North America : USA : Minnesota
  • Northern Lights Radio Society - Organization of Upper Midwest amateur radio operators who are active in weak signal (SSB/CW) work on the VHF, UHF, and Microwave bands
    [ Hits: 502 | Votes: 0 | Rating: 0 ]
Ham Radio : Clubs : North America : USA : Washington Internet and Radio : Police Scanners Propagation : Observatories
  • SuperDARN - An international Radar network for studying the Earth\'s upper atmosphere, ionosphere, and connection into space.
    [ Hits: 256 | Votes: 1 | Rating: 7 ]
Software : DSP
  • SignalGen - SignalGen is a free (GPL) Linux (Xwindows GUI-based) utility that generates relatively low frequency signals with the use of a PC sound card. It is an entirely suitable replacement for a hardware signal generator if one doesn't require signals of a frequency higher than about 50 KHz. SignalGen creates any frequency between a fraction of one Hertz and an upper limit determined by your sound card's capabilities.
    [ Hits: 1832 | Votes: 2 | Rating: 10 ]
Software : Digital SSTV
  • EP Cam - EP Cam can be used in place of ManyCam to capture the upper left corner of EasyPal. The captured image is used as an overlay on WebCam7 and used as a virtual web cam.
    [ Hits: 654 | Votes: 2 | Rating: 1 ]
Technical Reference : Audio
  • Audio spectrum analyzer  pop - Analyzes audio from 10 Hz to 20 kHz, input from microphone or wave file, Variable sample rates (8000 Hz, 11025 Hz, 22050 Hz, 44100 Hz) Variable transform sizes (1k, 2k, 4k, 8k) Upper and lower limits adjustable Continuous, averaged, peak hold
    [ Hits: 30291 | Votes: 54 | Rating: 3.82 ]
Technical Reference : Coax Cables and Connectors

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