[NJARC] Philco 37-650 RF Question

[antqradio at juno.com]

I believe the OHM was redefined sometime after WW2, this should account
for the slight differences.
Regards,
Jim

On Mon, 27 Feb 2006 14:54:30 -0800 (PST) Scott Roberts
<ng19delta at yahoo.com> writes:
> Visit our web site - See http://www.njarc.org
> _______________________________________________
> re: The 37-650 Saga
> 
> I just pulled the 2nd IF coil can for a look-see, and
> to clean up the trimmers, in case they are dirty.
> 
> While doing so, I took the following readings:
> (#28 on the schematic, for those following the
> proceedings here)
> Readings made with all wires disconnected from
> trimmers: trimmer number given for coil reference
> only, ohmed circuit is the coil shown for each
> trimmer. I made sure to clean ends of coil leads, in
> case they had varnish, rosin, etc., throwing reading
> off. 
> 
> Trimmer 28P coil should have 12 ohms resistance. Reads
> 14 ohms
> 
> Trimmer 28S coil should read 8 ohms total, and 4 ohms
> at tap. Actually reads 14 ohms total, with 10 ohms at
> tap.
> 
> These sound high to me. 
> 
> How may these readings be contributing to the
> misery...er, mystery...
> 
> Scott