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Heath-Zenith (Heathkit) Frequency Counter Model SM-2420
W8ZV
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Posts: 23
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Joined: Dec 2018
City: Coopersville State, Province, Country: MI
#8

05-06-2020, 01:13 PM
If you look at the schematic for the SG-8, there is a connection in the tank circuit of the RF OSC that has a common connection with the AF mod output tube, 6C4.  I'd be looking for a cold solder joint at that connection, or an error.
Kim Herron W8ZV
w8zv at goldenradioservice.com
1-616-677-3706
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RE: Heath-Zenith (Heathkit) Frequency Counter Model SM-2420 - by W8ZV - 05-06-2020, 01:13 PM



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  1. The PHILCO Phorum
  2. Various and Sundry Categories
  3. Test Equipment