I have a custom digital transceiver and will like to communicate with digital satellites in the UHF band. It might be fun to try different protocols other than commonly used (like AX.25) as well!
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$\begingroup$ What's a "custom protocol"? $\endgroup$– Phil Frost - W8IICommented Mar 27, 2015 at 15:47
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$\begingroup$ By Custom protocol, I mean non-standard protocols. Protocols apart from standards as AX.25 $\endgroup$– Vaibhav RekhateCommented Mar 27, 2015 at 19:08
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$\begingroup$ Still not sure what you mean. Every satellite is using some kind of standard. Otherwise, it couldn't communicate with anything, and I doubt anyone has spent the money to launch a satellite and then not intend to communicate with it. $\endgroup$– Phil Frost - W8IICommented Mar 27, 2015 at 19:21
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$\begingroup$ Okay, so may be some satellite with not so popular standard? Like I know for sure everyone doesn't use AX.25. So satellites that use communication protocols other that AX.25 $\endgroup$– Vaibhav RekhateCommented Mar 27, 2015 at 19:30
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$\begingroup$ If you know for sure, then why are you asking this question? You seem to already know the answer is yes. $\endgroup$– Phil Frost - W8IICommented Mar 27, 2015 at 19:41
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Perhaps this list of active amateur satellites, their up and downlink frequencies, and their modulations will help you. As for their protocols, you may have to google each one and find more details.
