CHIRP

I can download the radio's data, but when I attempt to change a channel (or create a new channel), the radio refuses it.

Steps to reproduce:
1) Connect radio
2) Start chirp
3) Download from radio. Select appropriate serial port (/dev/ttyUSB0) and type (Kenwood, auto-detect).
4) Modify a channel, e.g. change from no tone to 103.5 Hz tone
Expected results:
Radio updates
Actual results:
Radio refuses the channel update.
5) Attempt to create a new channel in a blank location: set frequency to 146.000
Expected results:
Radio updates
Actual results:
Radio refuses the channel update.

Reproducability: every time.