[crackle]

Thanks every one for your useful and detailed information.
A friend has been messing with the radio that was not working and thought TR41 was the TX PA device, he swapped it for a NPN output transistor.
He says he has put the original TX41 2SA473 back and the radio is now transmitting but it has some other issues.
I think this may be another radio to come my way to take a look at.

thanks again
Mike