[Hallicrafters] knob

[Julian Bunn]

It's quite easy to make a workable replacement: I did so for
the CW Pitch knob on an SX-71:

http://pcbunn.cacr.caltech.edu/jjb/Hallicrafters/SX71/knob_replacement.jpg

"I created a close replica of the CW Pitch control knob by using a knob from an old B&K frequency meter, and attaching a small stud 
(a length of screw thread) on the underside. This can be compared in the photo below with an original CW Pitch knob (from Jim Cain's 
SX-71)"

Not for a purist ... :-)

Julian

On 11/3/2010 1:34 PM, Richard Knoppow wrote:
>
> ----- Original Message -----
> From:<lrlayton at cox.net>
> To: "Richard Knoppow"<1oldlens1 at ix.netcom.com>
> Cc:<Hallicrafters at mailman.qth.net>
> Sent: Wednesday, November 03, 2010 11:39 AM
> Subject: Re: [Hallicrafters] knob
>
>
>> I don't have a  knob for a S-38, but Hallicrafters did make
>> a special knobs with about a 1/8 " bore (not an adapter)
>> for their radios that had the type of BFO used by the S-40
>> and  many others that varied the pitch by adjusting a slug
>> in the BFO coil with a threaded shaft  that went through
>> the front panel. I recently restored an 8R40 with the
>> original BFO knob and it has a small plastic tab molded on
>> the inside of the knob's skirt that hits the stop tab on
>> the panel and have seen similar knobs on other
>> Hallicrafters.
>>
>> Les Layton
>
>       Thank you Les, this is exactly what I wanted to know.
> Two folks on this list have now told me and given me a lead
> to someone who makes clones. Before asking on this list I
> did so several other places with no response. I was happy to
> find a list specializing in H stuff because I have
> inadvertently become a Hallicrafters collector. For some
> reason, which is obviously shared with many others,
> Hallicrafters equipment has a particular attraction for me.
> My very first real radio was an S-38B (which I still have in
> storage) bought new when I was about eight.
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dickburk at ix.netcom.com
>
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