[ARC5] GF-11/12 frequency lowering

[WA5CAB at cs.com]

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