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05-20-2015, 08:04 AM

zeno

VideoKarma Member

Join Date: Mar 2013

Location: New Hampshire

Posts: 4,918

Its role in life is a mixer diode. Mixes UHF osc with the incoming
UHF signal to get the TV's IF frequency.
When you turn to UHF the following happens.
The UHF tuner B+ gets turned on.
The VHF RF amp & mixer tubes are turned into 2
more stages of IF amps & the VHF osc is turned off.

73 Zeno

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