So, trying to program a CTCSS into a BF888 and it's not working. I have 3 other devices which aren't BF888s and they all work fine on the repeater I want to use, but if I put the exact same line for tone into the Chirp entry for the 888, no luck. It transmits on the right frequency, so frequency and offset are ok but it just seems to be refusing to send the CTCSS tone. I've even tried tones above and below the one wanted (programmed all 16 channels the same apart from the tone value) but nothing. And it's not a range issue because I'm only about 50 yards from the repeater antenna.

Has anyone else come across something like this?

EDITED: if I set the tone in both tone and tonesquelch and set the radio to TSQL it DOES transmit the right tone. Even weirder!