[TowerTalk] Where to get LMR 400
Steve
lists at oakcom.org
Mon Nov 2 16:45:45 EST 2020
Yes it's horrible cable if the application calls for hardline, but not
as horrible as RG-58 or speaker wire.
If the application calls for 3/8" braided cable, it's the best in most
situations. IMHO of course.
-Steve K8LX
On 11/2/2020 2:30 PM, Rob Atkinson wrote:
>> I bought LMR400 once and it seemed so stiff. Does this work OK around a
>> rotator? I also have some LMR400UF which has a stranded conductor and is
>> much more flexible however unfortunately Times used a different jacket
>> material which is less UV resistant. All of my rotator loops are RG-213.
>
> To be honest, I've never understood the love affair with LMR. I think
> it's horrible cable. You have an aluminum foil shield with tinned
> copper braid laid over it. I wouldn't want to solder that and I
> don't think that's the way the LMR connectors work anyway. If you
> have to crimp it a crimp on that shield with foam dielectric doesn't
> work well long term and if the jacket is breached the shield is
> fragile. I'd go with Andrew or Commscope 1/2 inch heliax hands down.
> The corrugated solid copper shield can be crimped with the Andrew N
> connectors and it's a water proof seal plus if the jacket gets cut the
> copper shield will preserve the interior until the jacket can be
> repaired. It's also able to withstand weight on it. I'd run heliax
> and use RG213 for the rotator loop however on 70 cm. something else
> may be needed. You can also solder to the corrugated copper more
> easily and it can maintain its shape under pressure from a hose clamp
> if you want to connect it to strap on the inside of a transmitter or
> transmatch enclosure at a feed point. I know the price of Heliax has
> gone up substantially so I'd look for used runs.
>
> 73
> Rob
> K5UJ
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