[Drakelist] REALLY DIFFERENT TR3

Thanks to some very nice guys on this list, who have been helpful to me, I have determined that I have a WEIRD Drake TR 3. My TR 3 is Serial # 6564 and since there were various versions, I now know that the two boards between tube sockets V 18 and V 19 and the audio transformer are wired

Re: [Drakelist] REALLY DIFFERENT TR3

Sent: Thursday, December 25, 2008 10:30 AM Subject: [Drakelist] REALLY DIFFERENT TR3 Thanks to some very nice guys on this list, who have been helpful to me, I have determined that I have a WEIRD Drake TR 3. My TR 3 is Serial # 6564 and since there were various versions, I now know

Re: [Drakelist] REALLY DIFFERENT TR3

John - I got home a little earlier than I expected Your TR-3 is not weird, just early. That resistor is indeed R111, and is 3.3k / 1/2W. It is between the +250V bus and the +245V bus. The +245V bus is a decoupled supply for V16 and V18, the low level Audio stages. About the only thing