Hi Guys
I have been using a TR4310 for about 40 years and can advise you that the correct keys for the set screws are as follows:
Type: Allen keys /Hex keys
Sizes needed
For PBT, RF-Gain and VFO knobs size 5/64¡±
For the small knobs like Mode, Rit, AF-Gain use size 0.050¡± / 1.27 mm
These keys can be found in any well equipped hardware store. Personally I use sets made by ¡±Bondhus¡± ?(US made) and Arndt(origin unknown).On Ebay you can get a suitable set for USD 18:27, se enclosed link:
73 de Jan /SM5MRQ
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22 jan. 2025 kl. 20:10 skrev atlasstuff via <
g4fph@...>:
Gregory,
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I believe this type to be that which I need for the mode switch on the TR4310. Seems it's no longer listed on the EHC website though.
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The data I found on it here:
says, 'Two 4-40 UNC set screws'. I'm guessing that the set screws require a very small, imperial ('freedom unit', in the US - HI!), hex-type wrench. I have one that I reckon is the correct size and that I've used on knobs for Atlas radio, but darned if I can find it right now!
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Regards,
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Mark, G4FPH.
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