[ARC5] GF-11/12 frequency lowering

[J. Forster]

This raises the question, were the ARC-5 coils and IF transformers aligned
in a jig, then just plugged in...  pretuned?

-John

====================


> I haven't, and don't recall anyone else ever mentioning it.  But the coils
> are match-marked to a specific serial number receiver.  I don't know, and
> the manuals don't say, whether the tweaking was done in the receivers or
> the
> coils, but logic says it must have been the coils.  If what you are trying
> to
> do is to get the frequency to match the tuning chart, I see no real
> "collector" reason not to tweak the coils.  So long as you edit somehow
> the serial
> number on the coil to match the receiver it now belongs to.  The odds of
> anyone ever again matching the coil up to its original receiver are quite
> small.
>
> I'll add (although I have never looked carefully at the coil sets to prove
> it) that there is probably some way in which to adjust the coils, as well
> as
> maybe "select on assembly" padder capacitors.
>
> In a message dated 08/23/2011 02:46:41 AM Central Daylight Time,
> dennis.monticelli at gmail.com writes:
>> Has anyone tried capacitively padding a GF-11/12 to bring the freq down
>> slightly (about 5%)?   I would like to do it in a gentle way such that
>> the
>> caps could be easily unsoldered to restore originality.  Of course
>> another
>> way to do this is to locate and acquire a different coil set.
>>
>> Dennis AE6C
>
> Robert Downs - Houston
> wa5cab dot com (Web Store)
> MVPA 9480
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