Philco 46-1209 Code 121

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Philco 46-1209 Code 121

OZ4
Senior Member

Posts: 285
Threads: 27
Joined: Nov 2012
City: Tehachapi. California

#28

08-31-2015, 03:45 PM

On that 7x7 don't forget to check the voltage drop on the plate resistor and figure the current to tell if it's too much. It's the 220K.

Here it states that 7x7 as a class A amplifier it's plate current should be 1.9MA
I am sure yours should be no more than that.
http://www.nj7p.org/Tubes/SQL/Tube_query.php?Type=7X7

!!!!!!!!!!!!!!!!!!!RESISTANCE IS FUTILE!!!!!!!!!!!!!!!!!!!!!!
/\/\/\/\/\/\/\/\/\

     [Image: http://philcoradio.com/phorum/images/smi...on_eek.gif] Chris

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Messages In This Thread

Philco 46-1209 Code 121 - by heats00 - 07-07-2015, 10:27 PM

RE: Philco 46-1209 Code 121 - by heats00 - 07-07-2015, 11:15 PM

RE: Philco 46-1209 Code 121 - by klondike98 - 07-07-2015, 11:20 PM

RE: Philco 46-1209 Code 121 - by codefox1 - 07-08-2015, 07:56 AM

RE: Philco 46-1209 Code 121 - by Radioroslyn - 07-09-2015, 05:03 PM

RE: Philco 46-1209 Code 121 - by heats00 - 07-16-2015, 09:27 PM

RE: Philco 46-1209 Code 121 - by heats00 - 08-06-2015, 01:19 PM

RE: Philco 46-1209 Code 121 - by heats00 - 08-06-2015, 11:05 PM

RE: Philco 46-1209 Code 121 - by heats00 - 08-08-2015, 01:30 AM

RE: Philco 46-1209 Code 121 - by heats00 - 08-09-2015, 12:46 AM

RE: Philco 46-1209 Code 121 - by heats00 - 08-12-2015, 08:04 PM

RE: Philco 46-1209 Code 121 - by heats00 - 08-17-2015, 02:55 PM

RE: Philco 46-1209 Code 121 - by klondike98 - 08-17-2015, 06:33 PM

RE: Philco 46-1209 Code 121 - by OZ4 - 08-17-2015, 08:14 PM

RE: Philco 46-1209 Code 121 - by heats00 - 08-18-2015, 08:27 AM

RE: Philco 46-1209 Code 121 - by OZ4 - 08-18-2015, 11:18 AM

RE: Philco 46-1209 Code 121 - by klondike98 - 08-18-2015, 12:02 PM

RE: Philco 46-1209 Code 121 - by heats00 - 08-19-2015, 12:00 AM

RE: Philco 46-1209 Code 121 - by OZ4 - 08-19-2015, 10:13 AM

RE: Philco 46-1209 Code 121 - by heats00 - 08-19-2015, 02:23 PM

RE: Philco 46-1209 Code 121 - by OZ4 - 08-19-2015, 06:22 PM

RE: Philco 46-1209 Code 121 - by heats00 - 08-20-2015, 09:56 PM

RE: Philco 46-1209 Code 121 - by OZ4 - 08-21-2015, 10:33 AM

RE: Philco 46-1209 Code 121 - by heats00 - 08-21-2015, 02:49 PM

RE: Philco 46-1209 Code 121 - by heats00 - 08-30-2015, 10:21 PM

RE: Philco 46-1209 Code 121 - by OZ4 - 08-31-2015, 10:05 AM

RE: Philco 46-1209 Code 121 - by heats00 - 08-31-2015, 11:28 AM

RE: Philco 46-1209 Code 121 - by OZ4 - 08-31-2015, 03:45 PM

RE: Philco 46-1209 Code 121 - by heats00 - 09-03-2015, 10:55 PM

RE: Philco 46-1209 Code 121 - by OZ4 - 09-04-2015, 10:06 AM

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