Hi, I think it would be better to use a module that can be easily controlled with an arduino, such as a dra-818.

Best regards.

El mar, 18 ene 2022 a las 7:58, <nw4gt@nw4gt.com> escribió:

Newbie here, so haven't found how to search topics yet.

I have a project where I have an arduino housed in an enclosure with a 
baofeng bf-888s. I want to be able to leave the radio on channel one, 
and program both pre-stored frequencies, as well as manually entered 
frequencies.  The arduino is tied to the audio in and out of the 
radio. I know enough about arduino coding to generate square wave 
output and detect square wave input, vary frequency of the data 
pulses, duty cycle, etc.

What I don't know is what is the protocol for sending a "code plug" to 
the BF-888s.  Anyone know where to steer me?  Mr Google doesn't seem 
to understand my question.

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