[Hallicrafters] Re: SX-101 Mark 3

[krk at ix.netcom.com]

Brad,

  Check out the Hammond website at http://www.hammondmfg.com/153.htm for a list 
of chokes. Also check AES at http://www.tubesandmore.com/. You could probably 
rewind the critter but at 8h and 310 ohms I bet there is a lot of wire in there. I wouldn't 
worry about exact values. A 7h choke would probably be fine. I'd be happy with 10-
15% tolerances on reactance & resistance. You could run a choke rated at 40ma if 
you use a big fan (joke).

73 Ken kb7rgg

> Hello all,
> I have been trouble shooting an SX-101 Mark 3.  The BFO is not working.  I
> started checking voltages on the tubes and found that they were much higher than
> they should be.  I remembered having this trouble with a Collins receiver one
> time and the problem was with the filter choke.  Sure enough the resistance on
> the choke was 16 ohms instead of the 310 ohms expected.  So,  I took the choke
> out and tried to find the short,  but I am in over my head at this point.  Does
> anyone know where I can either get this choke rewound,  or get a new or used
> one?  I need a 8 Henry choke rated at 85 miliamps with a winding resistence of
> about 310 ohms.  Thanks, Brad W5BK