Re: Bush VHF61 - magic eye not closing.
Apart from the low voltage on pin 7 when on VHF, when you state that Pin 1 (grid) when tuned to a station on VHF = -0.5mv and on MW = -2.2v, that confirms that for whatever reason, there is virtually no negative voltage swing when a station is tuned in on VHF. You will only see a display on VHF similar to that when a station is tuned in on MW if you have a similar level of negative voltage on the EM81 grid.
Attached below is a clip from the (ERT) data regarding the operation of the magic eye on both AM and FM.
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David.
BVWS Member.
G-QRP Club member 1339.
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