[Heathkit] SB-303 question

[Greg Mijal]

Hi:

No
It's not normal at all. Are you using what Heathkit recommends for the 
interconnect cables and are you sure they are all working correctly?
Is this a new installation?
Greg
WA7LYO
in sunny Feenix
----- Original Message ----- 
From: <OTAKEBI at aol.com>
To: <heathkit at mailman.qth.net>
Sent: Sunday, October 29, 2006 4:09 PM
Subject: [Heathkit] SB-303 question


> Is it normal for an SB-303 to produce hum when the AF Gain is turned all 
> the
> way down.
> The hum goes away when the AF Gain hits about 10:00 o'clock.
> A fellow told me that it was about normal for that rig.
> I can't believe that.
> I have set it up outside (cables to and from  SB-401) and inside (on the
> board voltages).
> Oh, and yes the hum is present with the SB-303 not connected to the SB-401
> and with a 50 ohm load on the LMO.
> Any suggestions?
> Or, is it the nature of the beast?
> Thanks,
> Dan/N4VET
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