[Boatanchors] SB-1000, no output on 10 meters

[Dave]

Greetings;

Working on an SB-1000 that will not produce output on 10 meters.

I found it with a 4D32 in the 3-500 socket. Why????

The tank circuits check out against the construction diagrams. Taps are 
in the correct locations.The band switch is OK, no visible arc damage.

The puzzler is the plate choke, RFC-3. It is half again as tall as all 
the ones I have seen BUT the upper half is half the diameter of the 
lower half!

Is this an undocumented  conversion / modification?

Some production variation that I cannot find in my documentation?

All other bands are operating properly with regard to tuning and loading.

Comments appreciated.

  Happy 4th to all!

GOD BLESS AMERICA!

Dave, W5WP

USAF - Korean conflict!