open

open

Pages: [prev] 1 2 3 4 5 6 7 8 9 10 11 [next]

• Better Feedline Loss Measurements with Antenna Analyzers - Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation
  [ Hits: 1921 | Votes: 2 | Rating: 10 ]

• Windom Antenna with 4:1 balun - The Windom is an Off-center wire multiband Antenna. The old version was fed just by a single-wire connected on 1/3 of antenna's overall length or with an open-line feeder (later versions). Here is another model with coaxial feeder, which is compatible with Solid States - 50 Ohm output transceivers .
  [ Hits: 8027 | Votes: 9 | Rating: 6.89 ]

• BigRadios.COM Marketplace - Web forum with an open marketplace to sell and buy old radios
  [ Hits: 1275 | Votes: 2 | Rating: 5.5 ]

• PQLHA Quebec Lighthouse award - This award is open to all Amateurs and SWLs
  [ Hits: 258 | Votes: 0 | Rating: 0 ]

• QSL Search machine by OZ7C - Records based on OZ2DXC Copenhagen DXcluster QSL and MGR databases.
  [ Hits: 440 | Votes: 1 | Rating: 5 ]

• Trusted QSL - The mission of the Trusted QSL Group is to keep eQSL an open and free activity for amateur radio operators by promoting the Digital Signature Standard (DSS).
  [ Hits: 613 | Votes: 1 | Rating: 10 ]

• Hamilton Amateur Radio Club - The Hamilton Amateur Radio Club operates the VE3NCF repeater, 146.760- and 444.075+MHz. It is open for use by all Hams
  [ Hits: 502 | Votes: 2 | Rating: 5.5 ]

• W6VIO JPL Amateur Radio Club - The JPL Amateur Radio Club is open to employees and contractors working at all Jet Propulsion Laboratory facilities including the Deep Space Communications Complexes in Australia, Spain and Goldstone California.
  [ Hits: 277 | Votes: 0 | Rating: 0 ]

• KB0TUC The Royal Gorge Amateur Radio Club - A General-Interest ARRL Affiliate Operating Open Repeaters in Canon City, Colorado
  [ Hits: 540 | Votes: 1 | Rating: 8 ]

• Quannapowitt Radio Association - The QRA is an organization open to all interested in radio communication. Its goal is to further develop and help expand Amateur Radio ("Ham Radio") while enjoying ourselve. Wakefield, Massachusetts
  [ Hits: 244 | Votes: 0 | Rating: 0 ]

• W2IMU Avaya Lincroft Amateur Radio Club - Open to employees and retirees of Avaya Inc. in Lincroft NJ. As Avaya Inc. was spun off from Lucent Technologies, AT&T Bell Laboratories, and even Western Electric
  [ Hits: 354 | Votes: 0 | Rating: 0 ]

• HB9FX Internet Remote Base JN37XH Hochwacht Zofingen Switzerland - Online web receiver powered by OpenWebRX based in Switzerland. You can isten between 10kHz - 10GHz frequencies. Receiver is operated by HB9BHU Rig VLF/HF/VHF: Airspy HF+, Magnetic Loop/Discone Rig SHF X-Band LNB, RTL-SDR, Stacked Slot Antenna
  [ Hits: 14069 | Votes: 111 | Rating: 6.7 ]

• OpenAPRS - Openaprs is a site dedicated to bringing you aprs tracking data and weather information.
  [ Hits: 729 | Votes: 5 | Rating: 7.4 ]

• Linrad - An open source software defined receiver for Linux, Free DSP and Windows
  [ Hits: 5722 | Votes: 4 | Rating: 7.5 ]

• Trusted QSL - Open source libraries and utilities to support using digital signatures for Amateur radio QSL system information like eqsl and lotw. Available for windows macos e linux.
  [ Hits: 2523 | Votes: 2 | Rating: 10 ]

• cocoaModem - CocoaModem is an opensource MacOSX application which implements modems (modulator-demodulators) for RTTY PSK MFSK Hellschreiber CW SITOR HF-FAX provided by W7AY
  [ Hits: 3182 | Votes: 6 | Rating: 8.33 ]

• OpenBCM - The BayCom-Mailbox is an amateur radio/citizen band AX.25 Bulletin Board System with AX.25 store and forward capabilities. The software is available for Linux, DOS and Win-NT. OpenBCM is opensource and freeware.
  [ Hits: 1500 | Votes: 1 | Rating: 5 ]

• Propagation Wizard - Freeware windows application that help in determine the availability of a shortwave link, by Rohde & Schwarz
  [ Hits: 2789 | Votes: 4 | Rating: 7.25 ]

• Codec 2 - Codec2 is an open source low bit rate speech codec designed for communications quality speech at around 2400 bit/s. Applications include low bandwidth HF/VHF digital radio.
  [ Hits: 1239 | Votes: 0 | Rating: 0 ]

• ARDF transmitter for 80 meters - The 80m TX described here is the well known ON7YD ATX-80 and timer, combined and re-engineered to fit a readily available enclosure by G3ZOI
  [ Hits: 1098 | Votes: 1 | Rating: 9 ]

Pages: [prev] 1 2 3 4 5 6 7 8 9 10 11 [next]