Getting started on the ISS repeater

It's good to hear the ISS Repeater back active again.
To be sucessful takes education and practice.

If you have a simple FM only 5k channel step radio, then you will be liminted in your ability to compensate for doppler.

If you are 5k locked, then it may be easier if you just leave your reciever on 145.800 and concentrate on Doppler on the 70cm side.

Channels for a 5k channel step radio:
If you can store cross band splits on your radio, then
program in the folllowing channels in this specific order.

One of the nice features of FM is that you do not need to be exactly on frequency (although the closer the better).

Each pass is a maximum of 10 minutes long.
During the fist two minutes of the pass, use channel
pair #1. During the minutes 2 - 4 use channel pair #2, etc.

A computer with current tracking keps data and doppler
(437.800) will help you know more percisly when to change channels.

Full Duplex:
If you have the option to run Full Duplex (Transmit while listening at the same time) then you should enable Auto Mute or put on headphones. I have been hearing many stations not useing headphones with Full Duplex and this results in a lound Squeel. In simple terms, we cant hear your call sign because of the squeel you are generating.

For additional, data, check the link

I have attached a link by AJ9N about the doppler on
ISS.
http://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correction.txt

Also, www.Marexmg.org web

73 Miles wf1f

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