[Hallicrafters] SX-111 RF Alignment

[Edward B Richards]

Try the "glue to Allen wrench" first. Just be careful not to glue the
slug to the tube or spread the halves. To break it up I use a dental pick
and chip away at it. It can be tedious. You can usually work from both
ends of the slug. Re replacement slugs: there are lots around. Every
parts radio has a bunch of them. I have some in a 35 mm film canister I
have salvaged from junk radios. If you describe the diameter and length I
am sure someone will have some. There are different powered iron mixes
but that has never been a problem to me. If they reach resonance you are
home free. Of course, you could replace the coils with some with good
slugs, if you can find them. Good luck.

73, Ed Richards K6UUZ


On Fri, 31 Dec 2004 12:47:01 -0500 Bill Gerhold <k2wh at optonline.net>
writes:
> The type of coil I am working with are the slug tuned with the hex 
> hole all
> the way through the material.  At your suggestion, I took a close 
> look into
> a couple of these and I do indeed see cracks in some of the slugs.
> 
> I am greatly dismayed in seeing this which means much more work than 
> I may
> be willing to undertake.  Anyone with ideas on how to break up a 
> powdered
> iron core inside a paper tube without damaging the tube?  If I am 
> successful
> in breaking them up, where does one get replacement cores?
> 
> K2WH
> 
> -----Original Message-----
> From: Edward B Richards [mailto:zuu6k at juno.com] 
> Sent: Friday, December 31, 2004 11:02 AM
> To: k2wh at optonline.net
> Cc: hallicrafters at mailman.qth.net
> Subject: Re: [Hallicrafters] SX-111 RF Alignment
> 
> Hi Bill;
> 
> I am not familiar with the slugs in the SX-111. There are basically 
> 3
> kinds of slugs: 1) Slugs that have a long threaded rod attached that 
> is
> notched in the end to take an alignment tool, 2) slugs that are 
> solid
> with a notch in the end to take an alignment tool, 3) slugs with a 
> hex
> hole all the way through them to take a hex alignment tool. Type1 
> are
> held in place by a sheet metal nut around the brass screw and seldom
> stick. Types 2 & 3 are usually held in place with wax or a plastic 
> strip
> that engages the threads. If the wax type, heating with a hair drier 
> will
> soften the wax and may free them. Type 3 sometimes stick because
> excessive force has split the slug lengthwise and attempts to turn 
> it
> only spreads the halves and make it jam tighter. The only solution 
> is to
> carefully break up the slug and remove the pieces and install a new 
> slug.
> Good luck.
> 
> 73, Ed Richards K6UUZ
> 
> 
> 
>