Wired for 4 pin cobra galaxy connex and radios that used the 4 pin mic wiring.
Here is an updated Tweetybird box that is 2 tone and variable.
Works on 12 volts
Key up with mic or the red/ green manual switches.
Monitor the outgoing sound.
The tweet sound has a much longer duration with
Many different tweet sound combinations.
Comes with 12 volt power cord.
***the tweety bird module will also be available on its own no box will be posted soon