One of the things I have recently had an interest in is Ham Radio Satellites, or AMSAT. There are a bunch of small satelllites in orbit (including the International Space Station) that can be used as repeaters for ham radio. One of the most well known and easy to use satellites is SO-50. I’ve heard people on SO-50 that were over 1,000 miles away from me.
If you are looking at getting into satellite tracking or using them for Ham Radio, there are a few things you need to know.
- How to track/predict satellite passes
- Equipment to communicate from the ground to the satellites
- Frequencies of the satellites
There are several programs available to predict satellite passes. I purchased one for my iPhone, GoSatWatch. GoSatWatch was $10 and well worth the money. It can track everything from Ham Satellites, the Internation Space Station, visible satellites, commercial and GPS satellites, and Iridium flares (looks like shooting stars). It has the option to show a world map, a sky map, and predict passes for whatever you want to track.
If you want a decent program for the computer, I recommend Gpredict. Gpredict is free and has many of the same features, but requires a computer.
Some satellites are strong enough to pick up with an extended whip style antenna. For better reception I purchased an Arrow Antenna. This antenna is great and I have been able to speak and hear with no issues. Just point the antenna towards the satellite as it passes and you will start hearing transmissions. If you are looking to do telemetry or packet radio, you’ll need equipment for this as well. I haven’t ventured into that yet, but I will be exploring that in the future.
The last thing you’ll need it a list of the frequencies for which the satellites use. I had generated a list from different locations, but I’m unable to locate the list. Some suggested sites are:
When I started this, I had no one to show me how to do anything, so I learned it all on my own the hard way. Some tips from me would be to:
- Make sure your squelch is wide open when talking
- There are many people attempting contacts, so don’t get discouraged if you can’t break in, just keep trying
- Be patient and try to predict out the passes
- Focus on trying to pick up satellites before transmitting
- Listen to how people talk before trying transmitting
- Write down call signs you here and look them up for distance information
- Have fun
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