short wave

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short wave

275 links - and 11 categories

Antennas : 2M
  • Squarooka Antenna - squared bazooka for 2 meters band - Sort of similar to the one of the 6m omni. Instead of using twin-lead, this design makes use of a more or less regular double bazooka antenna (coaxial dipole). Your attention shall be drawn to the available standart literature, such as Rothammel. In order to "compute" the dimension, Karl Rothammel mentioned that the total length of the dipole shall be 95% of the free-space wavelength. The short-circuit bridges (closing the folded dipole) are to be placed at a distance-fraction being equal to the velocity factor of the coax cable used, which will be 66% using RG-58 or RG174.
    [ Hits: 323 | Votes: 0 | Rating: 0 ]
Antennas : 80M
  • 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: 397 | Votes: 1 | Rating: 1 ]
Antennas : Dipole
  • The Short Dipole - There are several ways to reduce the length of a dipole and still use it as an effective antenna. Remember it is the electrical length that determines resonance. The physical length can be considerably less than a half wave length on your desired frequency as determined by 468/f MHz.
    [ Hits: 192 | Votes: 0 | Rating: 0 ]
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: 277 | Votes: 0 | Rating: 0 ]
Antennas : Installation
  • Broadcast Antennas on Buildings - When a broadcast antenna is to be placed on top of a building, there are special problems of feeding and grounding. The radiator is usually electrically short, that is, much less than one-quarter wavelength high.
    [ Hits: 340 | Votes: 2 | Rating: 10 ]
Antennas : Magnetic Loop
  • HF Resonant Loop Antenna - The antenna was built to be used for shortwave listening with a Tecsun PL-660 radio receiver. Later it was used with Yaesu VX-6 handheld transceiver and with Yaesu FT-817ND for shortwave listening.
    [ Hits: 998 | Votes: 3 | Rating: 9.67 ]
Antennas : Portable
  • Portable Vertical Antenna - A home made portable vertical antenna, that with a single 1/4 wave counterpoise wire is possible to achieve less than 1.5:1 SWR on 40, 30, and 20 meter bands. It is basically a center load, shortened ground plain vertical antenna.
    [ Hits: 346 | Votes: 0 | Rating: 0 ]
Antennas : Shortwave
  • Curtain Antenna - An antenna for shortwave radio broadcasting consisting of rows and columns of dipoles, is a high gain directional antenna, designed for medium and long range communications.
    [ Hits: 809 | Votes: 0 | Rating: 0 ]
Operating Modes : Morse code : Clubs
  • 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: 303 | Votes: 0 | Rating: 0 ]
Propagation : NVIS Propagation
  • NVIS Propagation - Near Vertical Incidence Skywave propagation is a form of radio wave propagation used on the MF and HF bands to provide radio communications and broadcasting coverage over short distances, especially where the terrain contains obstacles.
    [ Hits: 426 | Votes: 1 | Rating: 10 ]
Radio Equipment : Receivers
  • Sangean ATS-505 Review - An inexpensive portable radio that you can travel with. ATS-505 would be a good choice for a first-time purchaser of a shortwave radio.
    [ Hits: 321 | Votes: 0 | Rating: 0 ]
Shortwave Radio : BCL Resources
  • Danny Shortwave And Radio DX - This channel is all about radio listening and dxing. I will be covering frequency bands like longwave, AM/MW and shortwave. I'm embarking on my renew interest in this hobby since my childhood.
    [ Hits: 230 | Votes: 1 | Rating: 10 ]
Shortwave Radio : Numbers stations
  • Priyom Number Stations - Number stations are shortwave transmissions from foreign intelligence agencies to spies in the field of foreign countries.
    [ Hits: 262 | Votes: 0 | Rating: 0 ]
  • Numbers stations OWVL - A numbers station, also known as a one-way voice link (OWVL), is a special type of unusual radio broadcast, generally on the Short Wave (SW) radio bands
    [ Hits: 267 | Votes: 1 | Rating: 6 ]
  • Spy Numbers Forum - A Web forum dedicated to HF underground and in particular to Shortwave Pirate Radio Forums and Spy Numbers listenings
    [ Hits: 301 | Votes: 0 | Rating: 0 ]
Shortwave Radio : SWL Resources
  • Printable Log sheet for SWL - A free to download and print, paper log sheet for shortwave listerners in PDF format.
    [ Hits: 2813 | Votes: 14 | Rating: 6.85 ]
  • Milcom Monitoring Post - A blog dedicated to military communications shortwave intercepts, sponsored by the Teak Publishing
    [ Hits: 235 | Votes: 2 | Rating: 8.5 ]
Software : Radio Control
  • Win4IcomSuite ICOM Radio Control Software - The Ultimate Control Software for the IC-7300, IC-7610, IC-7600, IC-7850, IC-7851 and Others is a control software suite that includes additional interesting features such as support for the built in Spectrum Scope, Audio monitors, Shortwave DB, CW Terminal, Clublog Spotting, Memory management, interface to Ham Radio Deluxe Logbook, DM780, n1mm+, log4om, DXLab and other. Runs on Windows OS, commercial licence.
    [ Hits: 295 | Votes: 1 | Rating: 1 ]
Software : Software Defined Radio
  • SDR-Radio.com - SDR-Radio.com is a Windows console for Software Defined Radio (SDR) receivers and transceivers. Designed for the commercial, government, amateur radio and short-wave listener communities, the software provides a powerful interface for all SDR users
    [ Hits: 809 | Votes: 2 | Rating: 10 ]
Technical Reference : Receivers : Crystal radio
  • A Simple Radio Receiver - A very simple experimental short wave radio receiver. This is basically just a crystal radio with two stages of transistor amplification afterwards made with scrap components.
    [ Hits: 330 | Votes: 2 | Rating: 9 ]

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