If you go to DigiKey and look up 83-1SP it shows only one manufacturer -
Amphenol RF. That is the genuine part, with a Q1 price of $7.45, but it drops
quickly in quantity.
I would probably look for adapters and other parts by the same company,
Amphenol RF.
73,
Jack, W6FB
> On Nov 24, 2023, at 1:53 PM, Jim Brown <jim@audiosystemsgroup.com> wrote:
>
> On 11/24/2023 10:59 AM, Scott Townley wrote:
>> How do I separate the wheat from the chaff? I have a fully equipped
>> bench...I would think the go-to would be a TDR measurement. Any
>> better/additional suggestions?
>
> Look at them carefully. If they aren't labeled Amphenol or stamped with
> MIL-spec numbers, they're junk. It's all about mechanical construction.
> Measurements won't show it.
>
> I've bought surplus MIL-spec adapters at ham flea-markets. Amphenol parts are
> sold by legacy electronics vendors like Allied, Newark, Arrow, etc. There are
> a few ham vendors who sell them, but many also sell junk connectors. The real
> thing is 2-3x more expensive. Here's one quality vendor that sells both the
> real thing and the junk. They don't offer quantity discounts, while the
> traditional electronics vendors do.
>
> https://www.rfparts.com/sitemap
>
> We sometimes need to study the Amphenol parts listing to know which connector
> to buy. For example, they manufacture the solder-type PL259 with at least 4
> different part numbers, all of which start with 83-1SP. The one we want is
> the one with no suffix, because the body is silver plated, and thus easier to
> solder to.
>
> 73, Jim K9YC
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