PCM 10X transmitter
Thank you for your quick reply.
Interestingly this Tx was bought in the US (from Dons Hobby shop great guys) and my other in the UK. Both have the diode.
If its only to prevent reverse charging the battery I will jump it as I use only JR chargers. (guess this protection is needed because of the non standard JR colour coding on the charge cable.
Thank you again. David Gladwin