ISS

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ISS

443 links - and 7 categories

Antennas : Antenna Calculators
  • RF Transmission Line Loss Calculator - This calculator computes the matched line loss for a transmission line using a model calibrated from data for the transmission line types built in to the calculator. It also gives an estimate of the mismatched loss if the mismatch is specified.
    [ Hits: 2508 | Votes: 18 | Rating: 3.94 ]
Antennas : Feed Lines
  • Coaxial Transmitting Chokes - Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC
    [ Hits: 1099 | Votes: 0 | Rating: 0 ]
  • The Coaxial Line - Impedance matching, Transmission Lines, Characteristic Impedance, VSWR & Mismatch and Antenna Losses
    [ Hits: 888 | Votes: 0 | Rating: 0 ]
Antennas : Homebrewing Techniques
  • From Transmitter to Antenna - A collection of articles on the subject of impedance, impedance matching and high-frequency power transmission by G3YNH
    [ Hits: 1159 | Votes: 0 | Rating: 0 ]
Antennas : Portable
  • Antennas for 100 Pound DXpeditions - NE1RD interesting publication published online about homebrewing antennas for dx peditions or portable use
    [ Hits: 2464 | Votes: 3 | Rating: 7.33 ]
Antennas : Theory
  • Matching Waves, VSWR at work - When the radiation resistance (voltage to current ratio) of an antenna is the same value as the characteristic impedance of the transmission line (voltage to current ratio in the line), all of the electrical energy transmitted down the line is taken by the antenna and radiated into space in the form of a radio wave.
    [ Hits: 507 | Votes: 0 | Rating: 0 ]
DX Resources : QSLing
  • Formatting an international address - The formatting of the address on an international item is dictated by the recommendations issued by the countries of origin and destination of the item.
    [ Hits: 458 | Votes: 0 | Rating: 0 ]
Ham Radio : ARES RACES Ham Radio : Clubs : North America : USA : Washington
  • W7BI Issaquah Amateur Radio Clun - To encouraging all aspects of Amateur Radio operation, including public service and radio experimentation for scientific improvement of the art.
    [ Hits: 554 | Votes: 4 | Rating: 6.75 ]
Ham Radio : Clubs : Technical Specialty
  • NCVEC.org - The NCVEC is a not-for-profit voluntary association, with membership comprised of the various Federal Communications Commission (FCC) certified Volunteer Examiner Coordinators (VECs).
    [ Hits: 684 | Votes: 1 | Rating: 10 ]
Manufacturers : Filters
  • Filtronetics Inc - Maker of filters, oscillators, cristals Coils, Toroidal Inductions, Solenoids, Bifilar wound Solenoids, Trifilar Solenoids and Transformers Located in Kansas City, Missouri
    [ Hits: 768 | Votes: 0 | Rating: 0 ]
Operating Modes : Amateur Television
  • SwissATV - swissATV.ch swiss site dedicated to Ham radio ATV
    [ Hits: 381 | Votes: 0 | Rating: 0 ]
Operating Modes : International Space Station
  • Ham Radio Stations heard via ISS - This page documents Amateur Radio data digipeated by the International Space Station
    [ Hits: 1140 | Votes: 8 | Rating: 5.75 ]
Operating Modes : SSTV : SSTV Images
  • Digital SSTV images - HAMDRM pictures received on 80 meters band at 3733 KHz
    [ Hits: 292 | Votes: 2 | Rating: 10 ]
Radio Equipment : HF Transceivers : Icom IC-746
  • IC-746PRO TX Problem - The IC-746PRO is a great rig. But it has a few reliability issues, especially with the earlier-production units. This article addresses four problem areas:. IC151 on the RF Unit. Driver circuit on the PA Unit. HRX-muting circuit on the CTRL Unit. Predriver on the PA Unit.
    [ Hits: 2013 | Votes: 3 | Rating: 9.67 ]
Software : Databases
  • QST Browser - A Mac OS X application for searching and viewing the back issues of periodicals that are published by the ARRL in CD-ROM format.
    [ Hits: 451 | Votes: 1 | Rating: 10 ]
Software : Linux
  • linSmith - Smith chart utlity - A 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 scrollbars.
    [ Hits: 1368 | Votes: 1 | Rating: 10 ]
Technical Reference : Dummy Loads
  • A 25 Watt Dummy Load - Dummy load described here can be used for up to 35 watts for short transmissions, and up to 25 watts for longer periods.
    [ Hits: 4872 | Votes: 5 | Rating: 2.8 ]
Technical Reference : Duplexers
  • Diplexer 2m 70cm - This DIPLEXER separates 2m from 70cm on the same coax cable, and allows to use 2 antennas over the same cable and permits transmission on one band and simultaneous receiption on the other band by hb9abx
    [ Hits: 3789 | Votes: 12 | Rating: 7.75 ]
Technical Reference : Test Equipment
  • VK5JST Aerial Analyser - This antenna anlyzer project was published in the May 2005 issue of the Australian magazine "Amateur Radio", and has been designed using parts which are very readily available
    [ Hits: 3069 | Votes: 8 | Rating: 7.26 ]

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