Okay, I have had a bunch of guys send me info so I thought I would just post this once to the group. My 8103 does not have a diode. Friday night I made a cable for my Alpha 4 to charge my transmitter. The Alpha is very smart. I had the polarity wrong the first time I plugged it into the Alpha and it simply read "reverse" and did not harm anything. Don't try that with your average charger! So I simply reversed the wires and resoldered everything and it worked great! Thanks for all your help! Burke Jones Custom Cores http://www.custom-cores.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]