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Model 640 code 121 : all cathode to ground on my radio
AI2V
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Posts: 201
Threads: 26
Joined: Dec 2005
City: Morris Plains, NJ
#2

06-22-2007, 10:09 AM
Frederic-
Your English is excellent. It is not a problem.

I have two 640's, a 645, and a 650- all are wired to the schematic. They are excellent radios after re-capping and replacing the high value resistors.

The last owner could have been trying to optimize it for one weak frequency. I am not the expert on this series but I have never seen wiring like your 640. It should take only an hour or two to restore the wiring to original. Rewiring would certainly be worth the time.
Pete AI2V
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Messages In This Thread
640 grounded cathodes - by AI2V - 06-22-2007, 10:09 AM
[No subject] - by Ron Ramirez - 06-22-2007, 11:07 PM
[No subject] - by fabignoli - 06-23-2007, 12:45 PM
[No subject] - by fabignoli - 07-06-2007, 09:47 AM
[No subject] - by Ron Ramirez - 07-07-2007, 06:13 PM
[No subject] - by fabignoli - 07-09-2007, 05:01 AM
[No subject] - by fabignoli - 07-15-2007, 06:23 PM
[No subject] - by fabignoli - 08-11-2007, 02:16 PM



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