Re: [IRCA] SRF-59 Alignment Procedure

["John Cereghin" <jcereghin@xxxxxxxxx>]

Huh.  One sure way for me to murder my SRF is to open it up!  I'm so
technically inclined that my wife does most of the carpentry work
around the house!  Just because I have a ham ticket doesn't mean I
know which end of a soldering iron to hold!  I'm just going to have to
be satisfied with the stock SFR, which is no slouch.

John Cereghin
Smyrna DE

On Dec 23, 2007 2:15 AM,  <D1028Gary@xxxxxxx> wrote:
> Hello All,
>
>      Congratulations to the east coast DXers John  and Paul on their SRF-59
> DX loggings-- I'm always happy to hear of Ultralight DX  fun!
>
>      Recently I have had several requests to develop  (and thereafter
> promulgate) an alignment procedure for the SRF-59.  This  has been done, and it was
> successfully performed on a unit whose sensitivity was  slightly off from my
> 3-TP original SRF-59 unit, making both equal in  sensitivity.  That is the good
> news...
>
>      The not-so-good news is that this alignment  procedure requires
> patience, good eyesight, steady nerves, and involves a rather  tricky alignment of the
> dial needle frequency with the tuner frequency, which  may require trial-and
> -error attempts at bind-free dial movement.
>
>      The RF alignment itself is very simple, involving  only the peaking of a
> single IF transformer near the 1.75 inch ferrite bar  antenna, which has a
> significant effect on AM sensitivity.  A  non-metallic flat-bladed alignment
> tool (plastic or homemade wood) is required  to peak the slug.  This alignment
> procedure should only be attempted if you  have certain proof that the AM
> sensitivity of your unit is less than another  SRF-59, and then, only if you have
> some serious experience with disassembly and  reassembly of tight-fitting,
> miniature electronic equipment.  Professional  technicians, hobbyists with
> extensive Heathkit experience, and watch repairmen  (hi) should have no trouble.  The
> file will be provided to any who request  it, and feel free to proceed at your
> own risk (after all, it's only 15 bucks,  right?).
>
>
>              73 and Good DX,
>
>
>              Gary
>
>
>
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