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Re: [TowerTalk] Solid center conductor LMR400 for crankup tower?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Solid center conductor LMR400 for crankup tower?
From: K8RI on TT <k8ri-on-towertalk@tm.net>
Date: Thu, 27 Oct 2011 14:44:45 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 10/27/2011 12:12 AM, Mike wrote:
> That stuff is great, you could use it just for the Rotator coil part if you
> wanted and the LM-400 and 400UF would last forever.

Have you used LMR400UF? I have used quite  a bit and recommend hams stay 
away from it due to the short lifetime I've gotten out of it when it's 
exposed to the elements. The regular LMR400 is great

73

Roger (K8RI)


>
> Mike
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Richard Solomon
> Sent: Wednesday, October 26, 2011 9:07 PM
> To: TowerTalk
> Subject: Re: [TowerTalk] Solid center conductor LMR400 for crankup tower?
>
> Another alternative is LMR-400UF, stranded center conductor like RG-8, but
> better specs.
>
> 73, Dick, W1KSZ
>
> On Wed, Oct 26, 2011 at 9:03 PM, Grant Saviers<grants2@pacbell.net>  wrote:
>
>> The solid center conductor cables are spec'd for about 20 bends at the
>> specified radius.  I've been told that the failure mode is particularly
>> annoying - intermittent opens.  So depending on your crankup up/down
>> plans and how well you flake the cable for large radius bending, you may
>> have a reasonable life with a solid center coax.
>>
>> 9913-F7 is almost identical to LMR400 so why not use it or BuryFlex for
>> the up the tower run?  For 2m, 70cm and higher it might be worth playing
>> with LDF4 or bigger.
>>
>> Grant KZ1W
>>
>> On 10/26/2011 6:58 PM, krishna kanakasapapathi wrote:
>>> Howdie folks,
>>>     I am installing the DB18 on a 75ft crankup. Have a roll of LMR400,
> the
>>> solid center conductor type.
>>>     I thought i might just ask before i cut the cable from the roll. Any
>>> possible issues with
>>>      using the LMR400 on a crankup?
>>>
>>>     I have arms mounted on each of the 3 sections to keep the cables away
>>> from the telescoping sections.
>>>
>>> 73s
>>> krish
>>> w4vku
>>> _______________________________________________
>>>
>>>
>>>
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