call520 links - and 2 categories
Antennas : 80M
- 80 meters beacon antenna
- A vertical antenna specifically designed to work with the 80 meter CW beacon keyer
[ Hits: 1987 | Votes: 1 | Rating: 5.00 ]
- The Gain of an Endfire Array
- This article looks at the maximum theoretically possible directive gain that could be obtained with an endfire array of given length or number of elements, and compares this with practical results in the literature.
[ Hits: 834 | Votes: 1 | Rating: 6.00 ]
- Weatherproof Vertical Antennas - Slim Jim
- How to make a Weatherproof Vertically Polarised Omnidirectional Aerial, The Slim Jim Antenna
[ Hits: 5016 | Votes: 4 | Rating: 5.75 ]
- About broadband
- What you gain and what you lose.
While broadband and electrically small antennas may look attractive on the surface, they are by necessity compromises and usually don’t work as well as tuned antennas.
[ Hits: 556 | Votes: 0 | Rating: 0.00 ]
- YV Venezuela Callsign Search
- Online YV and YY Callsign search.
[ Hits: 333 | Votes: 7 | Rating: 3.14 ]
- Club Call: W4PVW Coastal Plains Amateur Radio Club
- Formed to help amateur radio operators have a local resource for help and information
[ Hits: 200 | Votes: 0 | Rating: 0.00 ]
- Florence Amateur Radio Club
- supports three repeaters in the Florence SC area. The Club Callsign, W4ULH authorized by the Federal Communications Commission.
[ Hits: 316 | Votes: 3 | Rating: 10.00 ]
- W7AIA, Clark County Amateur Radio Club
- Clark county amateur radio club serving sw washington for 75 years! come find out how our local ham club offers programs that cover everything from the history of morse code and call signs to ham radio antennas
[ Hits: 398 | Votes: 2 | Rating: 9.50 ]
- Anne Arundel County Police Live Scanner Radio Feed
- This web player allow to listen to the Anne Arundel County Police and Fire Live Scanner Radio Feed
[ Hits: 7107 | Votes: 30 | Rating: 8.33 ]
- UltraBeam Antennas
- Electronically controlled HF antennas.
General coverage. Top features on all ham bands.
Very advanced materials and state of the art technology.
[ Hits: 1608 | Votes: 2 | Rating: 9.00 ]
- Leading rotary switch manufacturer, Electroswitch Electronic Products offers a complete, vertically integrated, manufacturing and assembly facility dedicated to producing rotary switches
[ Hits: 463 | Votes: 0 | Rating: 0.00 ]
- Web Hosting & Domain Name Registrations managed by Scott Neader, QTH.COM
[ Hits: 284 | Votes: 0 | Rating: 0.00 ]
- Call Sign Hats and T-Shirts
- Custom Embroidered Ham Radio Call Sign Hats and T-shirts
[ Hits: 1225 | Votes: 14 | Rating: 8.72 ]
- BeSpeak is a real time HF beacon announcer. You select a band and the screen shows location, callsign and status of the beacon transmitting at that time.
[ Hits: 713 | Votes: 0 | Rating: 0.00 ]
- A Linux Smith charting program. You can enter either discrete components or transmission lines, see the results on screen and/or generate Postscript output. Component values can be changed numerically or using scrollbar
[ Hits: 322 | Votes: 0 | Rating: 0.00 ]
- Win32 command line utility, that allows you to create Master Callsign Database file (DTA), used in many contesting programs, from different logs in ADIF, Cabrillo, and plain text formats.
[ Hits: 468 | Votes: 0 | Rating: 0.00 ]
- RufzXP is an excellent free training software for improving code speed and CW practice, particularly (ultra) high speed memory copying of true amateur radio calls.
[ Hits: 10913 | Votes: 29 | Rating: 6.36 ]
- iPhone Ham Radio Callsign Lookup
- This webapp provides an iPhone-compatible lookup of Amateur Radio Callsigns. It provides the name, address, and license class (from the FCCâ€™s public records) of any US-Licensed Amateur Radio Operator.
[ Hits: 2086 | Votes: 5 | Rating: 4.20 ]
- CallBook for iPhone
- CallBook is an Amateur Radio application that allows you to look up call signs via the free WM7D server, the QRZ Online subscription service or the HamCall subscription server and track active APRS stations on www.aprs.fi. Lookup results can be emailed and the QTH can be instantly viewed in the Maps application
[ Hits: 3497 | Votes: 3 | Rating: 2.00 ]
- SDR-908 Portable SDR
- The SDR-908 is a software defined radio designed specifically for portable use, without the bother of being tethered to a PC or soundcard for the modulation/demodulation processing performed in this kind of radio.
[ Hits: 1141 | Votes: 0 | Rating: 0.00 ]
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