> UHF connectors are almost impossible measure with direct
> measurements, because loss was so low. I generally measure
> them by using temperature rise at HF, but the short and
> sweet explanation is if they don't melt they are probably
> OK.
>
> 73 Tom
>
> //And I've melted them! The ones that melt are a lot of the imported
> cheapies (not necessarily a cheap price, but cheaply made and imported)
> that have some sort of plastic dielectric of unknown characteristics. The
> clear looking dielectric in the Amphenol PL-258 type 83-1JRFX, which are
> made in Mexico but to strict Amphenol specifications, is very good. I
> don't even know what the material is, but I've never seen it fail, even
> with 1500W key-down for a long time. The mil-spec PL-258 is
> Amphenol 83-1J (without the "RFX" suffix) and is silver plated with a
> white dielectric material, probably Teflon. Those are great, and I've
> never lost one at any power level. The crappy ones might have a white
> colored dielectric (they usually do) but are lacking any heritage and do
> not carry the Amphenol brand name (or, usually, anybody's brand name). I
> have indeed melted those. -WB2WIK/6
>
>
>
>
>
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