I read this with Asian RSS R02.01.00, it shows a model number AZP03YPA20C5 GP280. I hexed to get into hambands, but there is no signalling menu and I have DTMF.
I also read in RSS ver SPA.01 (?) and it shows model 23 F2 which has a signalling screen and I setup DTMF but there is no option on the radio wide menu to enable DTMF, and it just beeps when buttons are pressed.
Any help is highly appreciated.
GP300 220mhz dtmf
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