I'm building a CubeSat and it's halfway built. I've got a launch for February 2023, and I need a transmitter. If I don't get a transmitter on this thing, the CubeSat will ride to orbit and immediately lose contact, and then it's mission over.
To prevent this, I need a cheap transmitter (anywhere from 90 to 300 US dollars will do, but whatever is cheapest should also be fine) that will operate well in the harsh conditions that the craft must endure.
It will be in a 500 km SSO orbit. Mission lifetime is expected to be around 8 to 10 days depending on whatever battery power is left after launch.