04-24-2011, 05:44 PM
The Shadow Meter depends on current draw changes (on station/off station) in the radios' front end which is reflected in the AVC voltage changes. Precise alignment with a good antenna AND ground will give the radio a chance to develop AVC at nominal design levels to make the Shadow Meter move. Many meters also can suffer from weak bias magnets which also may be a factor.
Chuck
Chuck
Chuck Schwark,
The Philco Repair Bench
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