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116b shadowmeter
etech
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Posts: 237
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Joined: Dec 2007
City: Gladwin, MI
#4

11-23-2008, 01:58 PM
Quote:Across the meter is voltage swings from 0.78, volts dc tuned to .221 vdc untuned.

Robert, it would seem to me that the voltage across the shadow meter with no signal should be more in the order of 7.8vdc, not .78vdc. Are you sure you are reading this correctly? If so, double check resistor 75 (2000 ohm) to see if it is the correct value. You will probably have to lift one of the wires from the shadowmeter to make this measurement. Also, double check the cathode resistors of the RF tube and the 1st IF tube. They should each be 300 ohms. If they are within 20%, they should be OK.

Ed
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Messages In This Thread
116b shadowmeter - by Robert - 11-23-2008, 12:24 PM
Re: 116b shadowmeter - by etech - 11-23-2008, 01:21 PM
Re: 116b shadowmeter - by Robert - 11-23-2008, 01:40 PM
Re: 116b shadowmeter - by etech - 11-23-2008, 01:58 PM
Re: 116b shadowmeter - by Robert - 11-23-2008, 02:56 PM
Re: 116b shadowmeter - by etech - 11-23-2008, 03:22 PM



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