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201X Shadow Meter not deflecting
#1

I must be missing something. I can't get the shadow meter to deflect more than approx. 1/32 of an inch.

First of all, the meter seems O.K. The vane moves freely and recenters itself (it's an older style meter). I have tried 2 different 37 tubes, with no change. The voltage on the plate is correct, both 2 meg resistors are new,as is the #66 cap.

The vane is centered on a strong station. But when I go off-frequency, it moves, but just barely. And the padder, #61, has no effect at all. I'm not sure how much the voltage on the plate should vary, but it only changes about 2 vdc.

This is my first experience with a shadow meter, so I'm not that familiar with it, but it seems straight forward.

Anyone with any ideas?

Thanks,

Pat
[Image: http://i1367.photobucket.com/albums/r796...vcogj0.jpg]

[Image: http://i1367.photobucket.com/albums/r796...htltlj.jpg]


Messages In This Thread
201X Shadow Meter not deflecting - by Patrick - 05-26-2018, 11:13 AM
RE: 201X Shadow Meter not deflecting - by morzh - 05-26-2018, 12:07 PM
RE: 201X Shadow Meter not deflecting - by Patrick - 05-26-2018, 12:11 PM
RE: 201X Shadow Meter not deflecting - by KCMike - 05-26-2018, 12:29 PM
RE: 201X Shadow Meter not deflecting - by Patrick - 05-26-2018, 01:28 PM
RE: 201X Shadow Meter not deflecting - by Patrick - 05-26-2018, 04:12 PM



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