Re: [Drakelist] Drakelist Digest, Vol 43, Issue 46

Hello Jim, Thanks for the rapid response. This should keep me busy for a while. 73 de Bob ZL2AAQ - Original Message - From: drakelist-requ...@zerobeat.net To: drakelist@zerobeat.net Sent: Friday, January 13, 2012 6:00 AM Subject: Drakelist Digest, Vol 43, Issue 46 Send Drakelist

[Drakelist] Inrush Current

Hello All, Congratulations to Mark, N1VQW on his AC-4 Re-build (with the 'Soft Start') and the subsequent comments by Garey, K4OAH and Dick, KE4NS. Etc. I rather like the idea of a remote 'Switch Board'. As far as originality of equipment is concerned could the relay have been mounted outboard

[Drakelist] Drake TR-4C Fil. Vol. Response To Comments

Hello All, Thanks for the several comments received re this problem (?). To VK2IFT: That's the easiest approach and I shall probably do as you suggest. To WA8ULW: The 'just under 6V' can be taken as 6V. The Manual does call for 6.3V. Do not know, at this stage, how far 'out of spec' the HV is.

[Drakelist] TR-4C Filament Voltage

The filament voltage on my TR-4C is just under 6V at the tube filament pin. The Drake AC-4 is wired for 120/240V, but the Line Voltage in New Zealand is 230V. Hence, I presume, this is the reason for lower filament voltage, and probably lower HV on the plates. I suppose this means lower

[Drakelist] Drake TR-4C V7; Response to Reply

Hello NU0C, Re Message 10, Drakelist Digest, Vol. 34, Issue 4. Thanks very much for listing that reply regarding Sharp and Remote Cutoff in the use of Pentode Tubes. That elegant explanation clearly showed how each tube worked, and I am now that much wiser!! I had looked at Lurch's graph and

[Drakelist] Drake TR-4C V7

Hello All, I recently acquired a Drake TR-4C SN 39893. On removing the top cover, for a tentative inspection, I discovered that V7, the RF Amp, had been changed from a 12BA6 (Remote Cutoff Pentode) to a Telefunken 12AU6 (Sharp Cutoff Pentode). According to the RCA Receiving Tube Manual both