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Old 24th Apr 2021, 6:18 pm   #1
Station X
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Default Hallicrafters SX24. Picture of bottom panel/cover.

I've had to make a new bottom panel for a Hallicrafters SX24 I'm restoring.

It was an easy enough job to cut it to size and drill holes for the fixing screws. However I don't know what, if any, holes were drilled in it. There may have been holes to line up with the trimmer capacitors and ventilation holes as well.

Is there anyone with a similar set that could photograph the bottom panel for me or perhaps point to one that's already online?

Thanks.
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Old 24th Apr 2021, 6:57 pm   #2
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

No photo but when I worked on a SX17 and SX28 there were open slots/holes over the RF sections in line with the trimmers etc, as you probably know the bottom plate adds extra stray capacitance. For illustration a SX28 bottom panel:

https://www.worthpoint.com/worthoped...ttom-135563859

Lawrence.
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Old 25th Apr 2021, 9:26 am   #3
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Thanks Lawrence.

That shows that there are holes or slots through which to adjust the trimmers in the RF and LO sections. In fact, as the pre-repair picture shows, two trimmers and the BFO adjuster require holes in the cabinet too.

I think I might opt for ventilation holes or slots rather than louvres though.
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Old 25th Apr 2021, 9:55 am   #4
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

I would also go for holes/slots, should be a nice exercise.

Lawrence.
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Old 25th Apr 2021, 11:18 am   #5
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Photo of the bottom of an SX24 attached.
Mike.
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Old 25th Apr 2021, 11:20 am   #6
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

He'll like that.

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Old 25th Apr 2021, 11:45 am   #7
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Quote:
Originally Posted by Gridiron View Post
Photo of the bottom of an SX24 attached.

Mike.
Brilliant. Many Thanks.

What's the function of the four holes/screws/rivets at the corners of the trimmer formation?

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Originally Posted by ms660 View Post
He'll like that.

Lawrence.
Too true. No ventilation holes needed.
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Old 25th Apr 2021, 7:36 pm   #8
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Think rivets were for a piece of card possibly to cover the holes so the trimmers weren't interfered with until absolutely necessary.
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Old 26th Apr 2021, 11:33 am   #9
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Yes. Obvious when you think about it which I didn't.
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Old 4th May 2021, 1:57 pm   #10
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Job done and awaiting powder coating.

The four holes are for a "Guarantee Card", I used a piece of plastic taken from a scrap consumer unit.
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Old 4th May 2021, 2:15 pm   #11
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Looks spot on.

Lawrence.
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Old 4th May 2021, 2:16 pm   #12
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Nice Job!

Cheers

Mike T
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Old 4th May 2021, 2:41 pm   #13
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Nice one Graham.
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Old 4th May 2021, 4:02 pm   #14
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Default Re: Hallicrafters SX24. Picture of bottom panel/cover.

Nice job there Graham, very satisfying to apply TLC to neglected or abused vintage kit and get it ship-shape again,

Colin
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