Cecil,
I've read somewhere that solid wires should not be
crimped. But after using GOOGLE to read more about
it, I see "solid" mentioned in several areas. However, I have
an IPC Requirements and Acceptance standard which has many
pages/examples of crimping and not -one- example of a
crimped connection using a solid wire. I believe this is
the reason:
"Crimping involves the application of an external force (F),
which deforms the individual strands of a copper wire in the
tool plastically by stressing them to beyond the yield point of the
material.
This produces what is called cold weld."
Not possible, I believe to get a "cold weld" as KISTLER
web site refers using solid wires. IDC or insertion displacement
connections is similar to a crimp and here you will see solid
wires. So now I have seen threads on cad weld, copper weld
and now we have cold weld. Plastically here I believe, means
cold flow of the material. Gas tight connection so it won't
oxidize.
I am sure someone on the list can answer your question directly,
but I am firm believer in crimping when done with the proper
tools and materials since it can provide a superior connection.
The reason why I don't crimp the center connector is because
I do not have a crimp tool for it the PL259. I am more concerned
with full-braid contact and not damaging the cable's dielectric material.
This is especially important, of course on VHF and beyond where
N type or other constant impedance connectors are a must.
Allied (Amphenol) did make a clamp type (no solder required
for the braid) PL259 connector. Only the center pin was soldered.
P/N 83-851. I could never keep the "clamp" tight if handled
very often.
Mel, K0PFX
----- Original Message -----
From: "Cecil Moore" <w5dxp@hotmail.com>
To: <towertalk@contesting.com>
Sent: Thursday, November 09, 2006 12:30 PM
Subject: Re: [TowerTalk] One more question on PL-259s
> >From: Terry Dunlap <kk6t@pacbell.net>
>>To: <towertalk@contesting.com>
>>Subject: Re: [TowerTalk] One more question on PL-259s
>>Date: Thu, 09 Nov 2006 09:21:30 -0800
>>I wonder why quite a few people on this reflector recommend using a crimp
>>style PL-259 but still talk about the best way to solder the center
>>conductor.
>>If it's best to crimp the shield wouldn't it be better to have a connector
>>where the center conductor gets crimped also?
>
> Can solid wires be crimped? Every time I have tried it, something went
> wrong.
> --
> 73, Cecil, w5dxp.com
>
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