[Hallicrafters] BFO - BFD?

[John N. Schwartzberg]

As usual, Glen's done a great job of describing how to do it here.

I would add, for clarification, is that I find I have the best results when 
I center the BFO control to mid-range, and peak the as-of-yet undetectable 
signal with either the main or bandspread tuning.  I then waggle the BFO 
control to one sideband or the other.  This assumes, of course, that the 
BFO alignment is such that mid-travel on the BFO knob actually has 
something to do with its range, which is not necessarily the case!  Once 
you get the feel of a particular receiver, you can tell where the BFO 
offset will be.

Although I have read in other places that the correct procedure is to turn 
the audio gain all the way up, I usually end up turning it up between half 
and full.  The hum on some receivers tends to get noticable toward the 
upper end of the gain range.....  Doesn't happen on all mine, but on 
some.... even with replaced caps.

Using this technique, I have found that my HRO-7 is a quite passable SSB 
rig, especially by manipulating the selectivity and phasing controls.  This 
is a fine discussion, as I think it will help some folks learn how to get a 
lot more performance out of their radios....

73,

John
N0GII


At 10:24 AM 2/12/2004 -0800, Glen Zook wrote:
>First turn off the AVC.  Next turn the r.f. gain all
>the way down.  Then turn the audio gain (volume
>control) all the way up.  Turn on the BFO.  Use the
>r.f. gain as the volume control and tune in an SSB
>station.  Turn the BFO to one side and then the other
>until the signal becomes readable.  You may have to
>tune the bandspread slightly to one side or the other
>to get the receiver to receive the SSB signal
>properly.
>
>This is the way to tune in an SSB signal with a
>receiver that doesn't have a product detector.
>
>Glen, K9STH
>
>
>--- jeff <jeffv at op.net> wrote:
>
>Using my S-120, I'm following the directions and
>moving the magic BFO knob around, trying to make the
>noises understandable (assuming I have the correct
>frequency, of course) to no effect.
>
>
>=====
>Glen, K9STH
>
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