BBB….I’m using a right angle nearson antenna PN: L181-150R with my BNC connection on my Si4707 board. It’s different in shape than this board but same setup. These are about $12. I’ve also used many of telescoping vhf antennas as well with same results.
Basildane…..The interrupt usage is a little tricky. Once you program which states you want the interrupt to trigger on you’ll need to use the status byte information to tell the arduino what to do. If status says that the SAMEINT was triggered then you’ll need to query the SAME status. If the byte says start of message bit is set then unmute radio. once the same status states that the EOM bit was set then read the SAME message out of the buffer, clear the buffer and then tell arduino to mute the radio again. Mine is on all the time so I only use the EOM to tell the arduino to process the buffer information and then I store it in a String for screen scrolling.
I’ve used the 4707 to integrate with a GPS module as well for signal strength tracking. Drive around and data log lat/lon/rssi and overlay on a google map using gps visualizer.
