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Old 14th Oct 2019, 11:55 am   #45
ms660
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Join Date: Apr 2011
Location: Cornwall, UK.
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Default Re: Marconi NS702 / 2207E, SN 623 (Atalanta type) receiver

Check the osc anode voltage, if that's ok try measuring the voltage on the oscillator's control grid, normally it should be a few volts -ve.

Remember that the first ECH81 is the mixer only, not the oscillator....

Lawrence.
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