[SixClub] Recommended Coax?

[KB0NLY]

9913 only has a problem when its not properly sealed....  I know that from 
experience when everyone used to use this stuff on repeaters.  Cut off the 
end and watch it run out.

I had a half dozen runs of 9913 in use myself for about ten years, when I 
finally retired it I cut one end off and there was no moisture inside and 
the center was as shiny as new.  The trick to it is seal up the end at the 
antenna.  Self amalgamating tape for 2-3 wraps, follow that with 2-3 layers 
of Super 33 for UV protection, and your good.  Don't rely on that goopy coax 
seal crap, not worth the effort.

73,

Scott



--------------------------------------------------
From: "Dave Rothermel" <k9dvl at comcast.net>
Sent: Wednesday, June 16, 2010 1:44 PM
To: "World Wide Six Meter Club" <sixclub at mailman.qth.net>
Subject: Re: [SixClub] Recommended Coax?

> 9913 can get condensation in the spiral. Our radio club had an antenna
> problem. Saw a drip of water at the bottom tower connector. Cut the
> connector off and water poured out.
>                                    K9DVL
>
> mikea wrote:
>> On Wed, Jun 16, 2010 at 01:42:49PM -0500, kd4e wrote:
>>> Based on this site:
>>> http://www.ocarc.ca/coax.htm
>>>
>>> Belden 9913 is a better brice-performance choice
>>> than most, except for Andrews Heliax, based on
>>> loss at 100' but at 150' it changes a little.
>>>
>>> Variables:
>>>
>>> 50MHz
>>> 100'
>>> SWR 1:1
>>>
>>> ........................Loss100'..Loss150'
>>> ---------------------------------------------
>>> Belden 9913..............0.885....1.328
>>> Davis RF Bury-Flex.......1.009....1.513
>>> LMR 400..................0.865....1.297
>>> Andrews LDF4-50A.........0.464....0.696
>>>
>>> What am I missing, please?
>>
>> The loss numbers look reasonable at both 100' and 150'; the 150' figures
>> are 1.5 * the 100' figures, which is the right thing to do. Let's rank
>> them in increasing order of loss at 100':
>>
>> ........................Loss100'..Loss150'
>> ---------------------------------------------
>> Andrews LDF4-50A.........0.464....0.696
>> LMR 400..................0.865....1.297
>> Belden 9913..............0.885....1.328
>> Davis RF Bury-Flex.......1.009....1.513
>>
>> They're still in order with respect to their losses at 150'. Why do you
>> think you're missing something?
>>
>> I think I'd try to minimize cost/loss for each run, myself, given that
>> all the cables were otherwise acceptable.
>>
>>
>>
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