[Hallicrafters] SX-28 Questions
rbethman
rbethman at comcast.net
Sun Oct 12 17:33:07 EDT 2008
Nick,
I sent him an E-Mail regarding the crystal alignment part.
He replied directly as to appreciation for bring back memories that tied
into the situation.
I haven't had an SX-28 in a VERY long time. I couldn't remember
anything about the ANL, BUT - I do remember tuning to a crystal
filter/separate BFO.
Some of us *still* manage to pull back old stored data in the brain matter!
Bob - N0DGN
HallicrafterSX28 at aol.com wrote:
> Hi
> The open primary in the ANL transformer won't affect perforamce other than
> an in-operative variable noise limiter.However the shunt type NL will still
> work as it doesn't depend on that particular transformer.
>
> The whole purpose of the exercise is to align the IF circuits to the
> frequency of the particular XTAL in the rcvr .The instructions in the manual have
> been a source of frustration for many people aligning an SX-28 for the first
> time.If you're doing this for the first time,I'd suggest (to keep your life
> simple) to switch to SHARP IF , inject a 455KHz signal into the mixer and align
> T1,T2,T3 (lower screw only) and trimmer C31(If memory serves me right) for
> peak response.
> You'll have 3 degrees of IF selectivites and still enjoy the rcvr.
> Good Luck
> AMK"Nick"
>
>
--
Bob - NØDGN
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