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Digital Dial for Collins 75A4




 
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Author Topic: Digital Dial for Collins 75A4  (Read 1256 times)
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jimmy
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« on: October 09, 2015, 10:38:51 PM »

Would someone please help. I need to know what tube is called a PTO tube in the A4. In the instruction I received with the unit it says remove the tube shield from the oscillator tube or the oscillator buffer tube.in the A4. The tube
number or the V number would sure help.
Jimmy K5CSU
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DMOD
AC0OB - A Place where Thermionic Emitters Rule!
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« Reply #1 on: October 09, 2015, 11:04:58 PM »



http://collinsradio.org/archives/manuals/75A-4-_3rd-ed-03-57_-Sec1.pdf

http://collinsradio.org/archives/manuals/75A-3%20(02-53)Schemsma.pdf


Phil - AC0OB
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"What kind of Koolaid do they make you drink in the Physics Department?" Charlie Epps to Dr. Larry Fleinhardt, NUMB3RS   Smiley
KB2WIG
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« Reply #2 on: October 09, 2015, 11:08:25 PM »


Go here.....


http://jptronics.org/Collins/


klc


ya beat me toit
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N3GTE
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« Reply #3 on: October 11, 2015, 12:00:01 PM »

Hey Jimmy,
You are looking for V15 and V16 they are 6BA6's in the middle towards the front of the set.

Terry N3GTE
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