open v wave
9 links
Antennas : 40M : 40 meter Loop Antennas
- Multi-Band Super Mini Loop Antenna
- How to make the Super antenna.
To build this antenna you need a lot that is at least 100 feet across.
Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands
This antenna works as a Full Wave Loop on 80 Meters and also works as a 2 wavelength open loop or Bi-Square on the 40 Meter band
[ Hits: 23204 | Votes: 8 | Rating: 6.95 ]
- Shortened 80m Antenna
- An antenna for 80 meters band for those who does not have enough space to setup a halwave wire dipole that is aprox 130ft or 40 meters. The antenna is an open-wire-fed shortened dipole
[ Hits: 420 | Votes: 1 | Rating: 1 ]
- Feeder types
- Article descrive the different types including coax and open-wire feeder and waveguide.
[ Hits: 337 | Votes: 0 | Rating: 0 ]
- The Quarter-wave stub
- The Quarter-wave stub can be used for many purposes. If it is left with an open end it can be used as a notch filter to attenuate certain frequencies. A quarter wave length of a transmission line can also be used as an impedance transformer, to know more about the Quarter-wave impedance transformer
[ Hits: 134 | Votes: 1 | Rating: 8 ]
- Quad Loop Antenna for 50 MHz
- Building A Full-Wave Quad Loop Antenna for 6 Meters. This is an easy antenna to build and the materials cost about $15-20. It exhibits 1.8dB gain over a 1/2-wave dipole. Using an open-wire parallel feedline (commonly called ladder line) with an antenna tuner, it tunes up on the 10m band as a 5/8-wave loop as well
[ Hits: 196 | Votes: 1 | Rating: 1 ]
- BADX Boston Area DXers
- BADX is an association of shortwave, mediumwave, and longwave DXers and shortwave radio listeners. Membership is open to all.
[ Hits: 1378 | Votes: 2 | Rating: 10 ]
- NAQCC
- North american QRP CW Club, open to any licensed radio amateur or shortwave listener (SWL) worldwide with at least some interest in CW/QRP operation. Encouraging the use of CW and helping all hams increase CW speed and proficiency
[ Hits: 326 | Votes: 0 | Rating: 0 ]
- Dream
updated
- Opensource software implementation of a DRM Receiver. Digital Radio Mondiale (DRM) is a new digital radio standard for the long-, medium- and short-wave ranges
[ Hits: 15867 | Votes: 19 | Rating: 5.84 ]
- Propagation Wizard
- Freeware windows application that help in determine the availability of a shortwave link, by Rohde & Schwarz
[ Hits: 2787 | Votes: 4 | Rating: 7.25 ]
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