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Author Topic: NC-109 Help Needed  (Read 534 times)
WB8BCO
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Posts: 4


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« on: March 11, 2005, 11:08:36 AM »

I recently bought an old NC-109 receiver from EBAY.  I had the seller pull the tubes before shipping to keep them safe.  The problem is some of the tubes are not marked, theres no tube layout sheet and no manual.

I need to have a basic tube layout sketch to get the tubes placed, if I can ID the tubes.  I would appreciate your help and advice.

Tim Cook
cookt@ohio.edu

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W7DJM
Member

Posts: 1




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« Reply #1 on: March 11, 2005, 11:17:39 AM »

"bama manuals."

http://bama.sbc.edu/

Go to the mirror site, it works better:

http://bama.edebris.com/manuals/

select national

http://bama.edebris.com/manuals/national/
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K7UNZ
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Posts: 691




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« Reply #2 on: March 29, 2005, 06:38:16 PM »

For the tube markings, here's an old trick that MIGHT help.

Stick the unmarked/partially marked tubes in the freezer for a while.  When they are good and chilled, you can often read the markings.  Sometimes a light exhale across the cold tube will also help bring up the marking.

Not guaranteed, but often works!

73, Jim/k7unz
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