They say there are exceptions to every rule.
Well, I said trackers are typically one-way (transmit only).
Check this out ! Byonics makes a TinyTrak-4
This looks like it would be a good replacement to a traditional TNC and could be either connected to the serial port of a Laptop or to some simple peripherals like a small LCD screen or a keyboard.
I’d like to know more about this …
Scott / KD5NJR