[Heathkit] SB-104A problems....

[William Houghton]

Yes, it does sound like the VFO level is too low. If I recall correctly it 
should be about 50mV RMS at the output of the VFO filter. 


From the K5BCQ  website:

"Voltage into the VFO Filter Board for a SB-104A (pin A) should be .18VRF and 
output (pin D) should be .05VRF"

73,

Bill


________________________________
From: Alexander N. Gerli <ac1wye at gmail.com>
To: "heath at puck.nether.net" <heath at puck.nether.net>; heathkit at mailman.qth.net
Sent: Fri, April 26, 2013 4:57:25 PM
Subject: [Heathkit] SB-104A problems....

Hello, Friends! Well my trusty SB-104A isn't so trusty any more...

I've done the setup alignment over (like I did when I got it three years
ago). The HFO coils peaked up the way they should have to S4 (S5 on 80m)
and the VFO seems to work mostly. I say that because when I get near the
top 100kHz of any band, the display goes nuts, like there's insufficient
VFO Level. But I believe I set that right, about the center of the
trimmer's rotation.

And after setting the WWV HFO coil, the display shows 16606 or something
wierd now. Maybe it IS VFO Level not suffcient?

Puts out tons of power so THAT part seems fine.

Anyone have any thoughts on this?

73, Sandy AC1Y
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