g stand

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g stand

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Antennas : Feed Lines
  • SWR: Maximum allowable VSWR - VSWR (voltage-standing-wave-ratio) represents the degree with which an antenna is "matched" to the system impedance. Most modern antennas do not require any tuning for optimum performance. VSWR is one of the easiest parameters to measure and VSWR meters are becoming very popular antenna installation tools
    [ Hits: 1237 | Votes: 3 | Rating: 3.33 ]
  • Setting the SWR of Your Antenna - SWR (standing wave ratio), is a measurement of how efficiently your antenna system will radiate the power available from your radio. In simple terms, your radio would like to radiate all of its power, but can only do so if the other components cooperate
    [ Hits: 1253 | Votes: 0 | Rating: 0 ]
  • Low loss Japanese coaxial cable - 5D-FB,8D-FB,10D-FB cables offer very low attenuation comparable to that of famous Andrews' Heliax and 8D-FB is almost half that of standard RG-213 for an equivalent diameter!
    [ Hits: 989 | Votes: 2 | Rating: 9 ]
Antennas : Lindenblad Antennas : Portable
  • Portable HF Antenna for the field day - This article describes a project of asymmetrical hatted vertical dipole, a portable antenna that can be used for field day operations, sota, campings or even for fixed installations. This is a freestanding 20-10m antenna that is really easy to build, easy to tune and relatively easy to carry.
    [ Hits: 1643 | Votes: 2 | Rating: 7.5 ]
Antennas : Theory
  • Understanding Standing Wave Ratios SWR - We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver' s output power verses the portion of that power reflected by the antenna system
    [ Hits: 8714 | Votes: 8 | Rating: 4.75 ]
Antique Radios : Collections
  • Rig Catalog Museum - JG2KJU collect brochures and catalog of vintage radios, including kenwood yaesu icom standard national nec star ten-tec and many more
    [ Hits: 2520 | Votes: 6 | Rating: 7.33 ]
Manufacturers : Towers and Accessories
  • The One Man Tower - Complete tower system incorporates rotator mount, and lateral support collars. You never have to climb again - and forget the hassle of tilting over to work on large arrays. The "One Man Tower" is the strongest dmall footprint free standing self erecting tower in the world
    [ Hits: 6783 | Votes: 23 | Rating: 9.48 ]
Operating Aids : Maps
  • Time Zone Map - Standard time zone map of the world in a jpeg file
    [ Hits: 1420 | Votes: 4 | Rating: 5.75 ]
Operating Modes : JT65
  • JT65 Protocol - JT65 is a digital protocol intended for Amateur Radio communication with extremely weak signals. It was designed to optimize Earth-Moon-Earth (EME) contacts on the VHF bands, and conforms efficiently to the established standards and procedures for such QSOs.
    [ Hits: 1505 | Votes: 3 | Rating: 7 ]
Radio Equipment : HF Transceivers : Icom IC-746
  • Low cost frequency stabilisation - The Icom IC-746 is quite a popular HF/VHF multimode transceiver which has one shortcoming in its standard configuration when used to operate modes requiring good medium-term frequency stability.
    [ Hits: 1724 | Votes: 1 | Rating: 5 ]
Shortwave Radio : Broadcasters : Time Signal Radios
  • BSF Taiwan - Nation Standard Time and Frequency Laboratory Telecommunication Laboratories (TL) ChungHwa Telecom Co. Ltd.
    [ Hits: 1013 | Votes: 1 | Rating: 9 ]
Shortwave Radio : Clubs
  • Worldwide dx club - A non-political DX organization, founded in 1966. Its aims are to strengthen this fascinating and scientific hobby as well as the international DX movement for better understanding and friendship among nations.
    [ Hits: 1073 | Votes: 1 | Rating: 10 ]
Shortwave Radio : SWL DX Newsletters
  • Pakistandxers - Pakistan swl dxers
    [ Hits: 769 | Votes: 3 | Rating: 5.33 ]
Software : APRS
  • APRS-Beacon - The purpose of the APRS-Beacon is to provide simple APRS-compatible position beacons for up to three Objects. It is designed to 'stand alone' and does not monitor other traffic on the frequency. It can use a single-port TNC (in 'native' mode), a single- or dual-port TNC in Kiss mode or the AGW Packet Engine in order to transmit on up to four radio ports.(When running with AGWPE, APRS-Beacon will also work with Windows 2000)
    [ Hits: 3421 | Votes: 7 | Rating: 2.57 ]
Software : Antenna analysis
  • SWR Calculator - Computes the Standing Wave Ratio, given the power readings on a line.
    [ Hits: 2029 | Votes: 16 | Rating: 5 ]
Software : DRM
  • 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: 15866 | Votes: 19 | Rating: 5.84 ]
Software : Morse Code Training
  • Morse Maker - MorseMaker is an up-to-date replacement for the Morse Machine shown further down this page. It has been re-written using a different programming language and is now entirely 'stand-alone' requiring no run-time support files. This version also works with Windows XP and can use the soundcard but please note that, unlike its predecessor, it does not split the alphabet into smaller 'learning' blocks and does not incorporate the Morse reader.
    [ Hits: 2391 | Votes: 9 | Rating: 6.23 ]
Software : Software Defined Radio
  • M0KGK SDR Decoder Software - KGKSDR is my attempt at some SDR decoding software. I'm putting this software together purely as a learning exercise, to better understand the mathematics behind SDR in general.
    [ Hits: 4031 | Votes: 10 | Rating: 8.1 ]
Software : Weak Signal
  • HamView - A freeware program to dig out weak signals buried in noise, functionally similar to the excellent FFTDSP of AF9Y, but with the added bonus of real time audio filtering of the incoming signals. Just point and click with the mouse, and the selected signal will stand out from the QRM and noise.
    [ Hits: 7559 | Votes: 3 | Rating: 5 ]

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