[R-390] Old Men Threads of The Coil

[Roy Morgan]

At 03:05 PM 3/11/03 -0500, Drew Papanek wrote:
>Reminds me of the old men threads of the coil of the rehash about repair 
>of mechanical filters.  ...
>Well, I have a non-functional 4 KHz mechanism a philharmonic whose old men 
>coils (input and output) both show continuity and are not shorted to 
>ground.  Haven't opened it up but I suspect those little disks may have 
>become loose on the wire.


Unlikelty but possible.. the coupling wires were spot welded to the disks.

>  Could be that the galipote (or is that chapapote) self-disumpuckey-ed 
> from those filter caps and magically  migratedcross-deck into the little 
> disks, immobilizing them.

BINGO, or almost. The filter was made with foam supports for the 
mechanism.  The foam is likely transmogrified from foam to ukkumpucky, or a 
relative of ukkumpucky.

I suggest you diesmbowel your "mechanism a philharmonic" and look 
closely.  Do not be surprised to find ukked-up foam contaminating the 
once-free-to-vibrate resonator disks and coupling wires.

Cleaning with delicate brushes or other instruments, and maybe solvent 
keeping that away from the coils, may solve the situation.

Please report your findings!

Roy
Who still suspects the early uses of the word had only one "k", thusly: 
"ukumpucky".
And, who has at least two defunct 4 kc filters scheduled for examination.


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan@nist.gov --