Operating Amateur Station Publication American
Operating Amateur Station Publication American at Amazon
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Amateur Radio operators are very fortunate, in that as well as having the use of novice radio repeaters to extend their range, they likewise have the use of Low Earth Orbiting satellites(LEOs) that are built and maintained by novice radio enthusiasts. These satellites operate in the VHF and UHF novice bands, and may concede stations to commune with each other at distances far dandier than commonly possible. One of the most usual satellites applied today is AO-51. AO-51 was launched on the 29th of June 2004 from Baikonur Cosmodrome, Kazakhstan, and it genuinely is one of the easiest satellites to work through. The uplink frequency (the frequency one transmits on) is in the 2M band (145.920MHz 67.0Hz CTCSS tone), and the downlink frequency (the receiver frequency) is in the 70 cms band (453.300 no tone). First of all we need to find out where and when the satellite will appear at your location. Fortunately, this selective information is very easy to find.Go to the heavens-above website, and type in your emplacement details to get a list of passes at your location. Listen on your radio at the time the satellite is in regards to to appear over the horizon, but get started by listening 5 kHz above 453.300MHz.Once the signal becomes clear, begin tuning down in 1 kHz increments to get the clearest signal.This is to concede for the doppler effect. Once you listen the satellite, you will be competent to put a call out on the uplink frequency, and with a little bit of luck you ought to listen your own signal relayed back to you. Recently launched from the International Space Station in February 2011, is a new satellite from North America called ARISSat-1. Uplink is amongst 435.740-455.760MHz, and the downlink is amid 145.918-145.958MHz. As well as voice operations, ARISSat-1 has four SSTV (Slow Scan TV) cameras onboard. Images will be stored and the transmitted in color using Robot36 mode under the callsign RS01S. Information when it comes to passes at your emplacement after launch, will be found in this instance by looking on the AMSAT North America website. Although transmitted power from novice radio satellites is very low (of the order of when it comes to 500 mW to 1 Watt), it is still possible to listen and work through them using a handheld transceiver with it is built-in Whip antenna. Remember to tilt your antenna, so that it’s perpendicular to the satellite, for better reception. Amateur satellites may be a boon to Amateurs who are restricted to operating on the V/UHF bands, and may grant intercontinental contacts to take place that wouldn’t other than as supposed or expected be possible. |
For Any Ham, or Wannabee