Are the any options that are small enough to make a remote contact radio ?
Basically something I can take with me while hiking, and have somebody else in civilization listen and have some conversations with ?
Basically something I can take with me while hiking, and have somebody else in civilization listen and have some conversations with ?
Ideally a radio for satellites is full duplex (you can hear simultaneously while transmitting). Those radios cost much more though. Many people just use two radios.
For shortwave radio, you could use something like the trusdx: https://dl2man.de/
Note that in both of these cases, to transmit, you'll need a license... and if you want to talk to someone specific it may be hard to do. Talking to random amateur radio operators is much easier.
The options I posted are cheap - you can easily spend tens of thousands of dollars on radios, antennas, amplifiers, towers, etc.