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Re: SX-23 Restoration - Information Requested


 
Edited

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Hello Bob

Unfortunately I have the same problem!!

Here are some pictures of what this should look like.
Best 73 (HB9HPZ)
Franz

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Von: [email protected] <[email protected]> Im Auftrag von bobkrassa
Gesendet: Sonntag, 18. August 2024 22:49
An: [email protected]
Betreff: [HallicraftersRadios] SX-23 Restoration - Information Requested

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I am about to start restoration of an SX-23. ?It works but not perfectly. ?It was apparently recapped early in the plastic capacitor era but needs some cosmetic and mechanical help. ?I am asking for help with the following questions.

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Cabinet paint. ?Was the original cabinet paint smooth or wrinkle? ?I have seen pictures of both black and light gray cabinets where it looks like a very light wrinkle but could even simply have been paint with sand grains mixed in?

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Front Panel. ?My front panel needs help, probably best an overlay. ?Does anyone know of someone who can make one and does anyone have a good image of an SX-23 front panel that I can provide to such a company if they don't already have? ?I think the word I am looking for regarding the image is orthogonal, that is the same scale in all directions. ?Maybe dry transfer lettering or decals would also be feasible - can anyone recommend sources?

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S- meter mounting. ?My s-meter works which is very fortunate but it is not well attached to the front panel. ?Can anyone provide a description or a picture of the back of the front panel in the s-meter area that could show how it is attached to the front panel? ?There are no screws into the meter housing through the front panel. ?Maybe it was just held in by the tight springy sheet metal wrapper?

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Bandspread dial indicator. ?The bandspread dial indicator mechanism is missing. ?The bandspread works and there is still some dial cord from the bandspread switch shaft that I can see was routed to the indicator mechanism. ?I found a blurry picture which shows the pulley for the bandspread indicator is about 2 inches diameter. ?Can any one provide the exact diameter? ?It looks like the pulley is on the back end of a short shaft and toward the front there would probably be a clear circular piece of plastic with a radial black line. ?There would also be a bracket for the dial light. ?I might be able to build such a mechanism but it would help to have a description and pictures. ?Of course if someone would be willing to sell one of these mechanisms I would be interested in purchasing!

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On the under side, there is a shelf along each side of the chassis on which there were some components. ?Can anyone tell me or confirm what those components were originally? Looking at mine and at some pictures of the underside that I have seen, it looks like?

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Power Transformer Side. ?On the power transformer side the shelf had a candohm resistor. ?These were used in many radios of that vintage and are a long flat metal can containing a wire wound tapped resistor. ?For example, on the SX-28 R31 and R32 are the two sections of a candohm resistor, used as a voltage divider for screen voltage. ?On the SX-23 the candohm serves the same purpose and comprises R30 and R31. ?On mine the candohm was replaced by two separate resistors. ?My only question on this side is whether there was anything else on this shelf originally?

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I.F. Transformer Side. ?It looks like the only items on the shelf were R20 and C68 connected to the headphone jack, toward the front of the radio. ?There is an unused hole in that shelf toward the rear. ?Again here my only question is whether there was anything else on this shelf originally??

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Any information will be much appreciated!

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Bob Krassa AC?JL

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