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Old 2nd Feb 2020, 5:54 pm   #16
Sylvester1950
Diode
 
Join Date: Nov 2018
Location: Hoorn, Westfriesland, Netherlands
Posts: 1
Default Re: Eddystone 730/4 BFO not working

Hi Steve, I had the same problem. See if you used the right tube. There has been an upgrade (EMER E749) to use a CV4009 instead of a 6BA6. In that case R64 of 68K was replaced by a 330K resistor. In my 730/4 that was the case and I replaced R64 by 68K (and 6BA6). Also C116 C123 were very bad (0.01 uF). I also replaced the other resistors and capacitors because the BFO unit was open anyway. Works well again now.

73
Kees , PA0KME
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