[AMRadio] Ferrite slugs for SX-28A

[David Knepper]

Another suggestion, that is a long shot, is to apply a drop or two of 
penetrating oil down the hole - let sit for a few hours and see if the slug 
will turn.

Whenever removing a ferrite slug, apply some white grease on the threads 
before installing.


David Knepper, W3CRA/W3ST
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----- Original Message ----- 
From: "W5AMI" <ars.w5ami at gmail.com>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Sunday, January 29, 2012 1:13 AM
Subject: Re: [AMRadio] Ferrite slugs for SX-28A


> On Sat, Jan 28, 2012 at 9:02 PM, Todd, KA1KAQ <ka1kaq at gmail.com> wrote:
>
>>
>> I agree with Jim's idea of carefully heating the old slugs, provided
>> you can get enough purchase on them to remove them. If not, drilling
>> is probably better. Either approach has risks: heat can soften and
>> damage the coil when you try to turn the old piece out, and too much
>> pressure during drilling can destroy the form too.
>>
>> Do you have any reference/cross for the slugs, Brian? I've got a SX-42
>> parts donor carcass buried up in one of the garages that still has all
>> of its coils. If they're the right size, you're welcome to them.
>>
>> ~ Todd,  KA1KAQ/4
>>
>
> Yes Todd, I agree with you guys about heating them.  Actually Jim 
> suggested
> that some time ago to me, but the problem is there is nothing the grab 
> hold
> of to turn them out of the forms.  I did measure the diameter of these NOS
> one's I have, and they come out to 0.350 on the outside of the threads.
> Slightly less than 3/8".  They are a half inch long, but I need to find
> out what the threading is.
>
> I am very happy with the performance of the 28 as it is, so I'm not in any
> hurry at all.  Just amazing audio and the bass response if exceptional.
> Needless to say, it was very satisfying to bring an old rig like the
> SX-28A back to life.
>
> If you do find those slugs in the 42 are similar in size, etc., let me
> know, and I will swap/trade/pay for them!!
>
> Thanks!
> Brian
>
>
>
> -- 
> Brian Sherrod - A.R.S. W5AMI
> My website: "Arkansas Airwaves <http://arkansasairwaves.net>"
> Committee - QWHA <http://menahamfest.org> (Queen Wilhelmina Hamfest
> Assoctiation)
> Arkansas Assistant Section Manager
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> Section Website: ARRL Arkansas <http://ararrl.org>
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