CHIRP

Only seems to work with recent versions of the UV-5R and its varieties. When reading two older radios, or their associated files (firmware BFB231 and BFB251), service settings don't even appear in the menu.

Hans PD0AC

Never mind, didn't missed the BFB291 part.

Hans

Hi Hans,

Yes. Not doing this for the older radios was intentional.

The tests that I did using my UV-5R with BFB231 firmware seemed to indicate that the early radios get their squelch threshold settings from firmware (the settings in the CHIRP Radio Image file are ignored). The "aux" memory layout changed with the introduction of BFB291 firmware. That moved the squelch threshold settings in a different memory location. Making squelch threshold adjustments to a radio with BFB293 firmware was successful. So I made the assumption that the ability to make squelch threshold adjustments coincided with the memory layout change.

Jim KC9HI

UV-5R with BFS313 BFS297 firmware - changing of services settings seems to no effect on squelch sensitivity even with 123 level setting. N5r-213 BFB297 firmware working fine. CHIRP daily-20150210. Tests done by receiving radio without antenna and transmitting radio with dummy load attached from 3-5 meters.

Nikolay,

This feature either works or it doesn't work. It depends on the radio. And when it does work, it doesn't work the same on every radio.

Jim KC9HI