National HRO 500 all bulbs replaced fixed S-meter installed. Calibration receive test & demo

Описание к видео National HRO 500 all bulbs replaced fixed S-meter installed. Calibration receive test & demo

Work to be done:

Band 1 needs calibrated. There was a 300pf cap which was put in place - into the curcuit basically across the varactor when band 1, 2 or 5 was selected.

I was unable to get this working yet as the wafer I put in only copied the front of the old HF switch in wafer 1 - first wafer from the front looking back.

Might need to put in an additional wafer in front of the new wafer and get this working or not.
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Tune up the persecutor for best reception
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Tune the 230 KHZ IF now that I have a working s-meter to use by the book / manual methods.
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Tune up the specialized circuits as dictated in the manual.
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Paint the case. I think I will use a chevy color called "Area 51".

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