If the PL-259 doesn't fit LMR-400, it's a knockoff and not a real PL-259.
Real ones are always available, next day and inexpensively, from Amphenol:
Like their P/N 83-1SP. It's perfect, tooled precisely to the specification,
and American made. And not expensive at all.
WB2WIK/6
-----Original Message-----
From: N3PKC [mailto:n3pkc@hotmail.com]
Sent: Tuesday, September 04, 2007 10:20 AM
To: Steve Katz; towertalk@contesting.com
Subject: Re: [TowerTalk] LMR400-PL259s
True, that's the source of the problem, so many differences in the PL-259's.
Regardless of what is considered spec, I've seen as many different
variations of the PL-259 as I've seen brands and manufacturers. Most
PL-259's I've bought cheap at the hamfest, for example, simply wouldn't fit
on the center conductor of Times Microwave LMR-400.
For this particular gentleman's purpose, try it and see :-)
Joe
N3PKC
----- Original Message -----
From: "Steve Katz" <stevek@jmr.com>
To: "N3PKC" <n3pkc@hotmail.com>; <towertalk@contesting.com>
Sent: Tuesday, September 04, 2007 1:09 PM
Subject: RE: [TowerTalk] LMR400-PL259s
> This isn't true.
>
> The military specification for type PL-259, which is about a 60 year-old
> specification now, does not allow for an undersized center pin that only
> fits the #13 AWG center conductor of RG8/U or RG213/U. Not at all. Never
> did, still doesn't.
>
> RG8 "foam" types like Belden 8214 always had an #11 AWG center conductor,
> which is already two steps larger than RG8-RG213. Times FM8 always had a
> #10 AWG center conductor, which is already three steps larger than
> RG8-RG213, and FM-8's been on the market for 40 years. The "new" cables
> like 9913 (which came to market in about 1984) and LMR-400 (which is more
> recent) have a #9.5 AWG center conductor that's only a few thousandths of
> an
> inch larger than FM-8.
>
> ALL PL-259's, if they are built correctly to the actual PL-259
> specification, will accommodate LMR-400 without modification. The actual
> mechanical detail specification provides for it.
>
> -WB2WIK/6
>
> -----Original Message-----
> From: N3PKC [mailto:n3pkc@hotmail.com]
> Sent: Tuesday, September 04, 2007 10:04 AM
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] LMR400-PL259s
>
> There's problems with using standard or run of the mill PL-259's on newer
> 9913 and LMR400 because the center conducter is much larger in diameter
> than the old RG-8U or 213 they were usually intended for use with.
>
> If you tell the folks you're buying them from and they're experienced
> enough
>
> (HRO AES), they can give you a connector that should work. LMR400 has the
> biggest center conductor of any other RG8 style coax I've worked with
> but's
> easy to file down if needed to fit a connector. I've done this many times
> with a little bastard mill file. Often I've lost the copper clad and was
> left with aluminum, but it seemed to bond well under the torch. No
> complaints over the years though, and the PVC jacket is nice as it melts a
> little around the connector and can seal it much better than rubber
> jacketed
>
> 9913. The LMR400 has a very nice attenuation rating and is pretty
> durable.
>
>
>
>
> ----- Original Message -----
> From: "Steve Katz" <stevek@jmr.com>
> To: <WW5L@gte.net>; "TowerTalk" <TOWERTALK@contesting.com>
> Sent: Tuesday, September 04, 2007 12:43 PM
> Subject: Re: [TowerTalk] LMR400-PL259s
>
>
>> LMR400 = standard PL-259
>>
>> WB2WIK/6
>>
>> -----Original Message-----
>> From: Tom Anderson [mailto:WW5L@gte.net]
>> Sent: Tuesday, September 04, 2007 9:26 AM
>> To: TowerTalk
>> Subject: [TowerTalk] LMR400-PL259s
>>
>> I'm having to redo my feed through window (XYL wanted new windows) which
>> will necessitate cutting the LMR400 preassembled cable I bought 3 years
>> ago. Will the "standard" PL259 work on LMR400 or is there a special
>> connector I need?
>>
>> Tom, WW5L
>>
>>
>>
>>
>>
>> _______________________________________________
>>
>>
>>
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>>
>>
>>
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>
> _______________________________________________
>
>
>
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