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Re: [TowerTalk] Bumps in coax, choosing coax

To: "Gary \"Joe\" Mayfield" <gary_mayfield@hotmail.com>
Subject: Re: [TowerTalk] Bumps in coax, choosing coax
From: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
Date: Sat, 28 Nov 2009 23:38:55 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>

Gary "Joe" Mayfield wrote:
> For 1/2 inch connectors, it is hard to beat these prices.
>   
Yes they are good prices.  The two new connectors I had were the L44P

73

Roger (K8RI)
> http://www.surpluscoax.com
>
> Standard disclaimer
>
> 73,
> Joe kk0sd
>
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Roger (K8RI)
> Sent: Saturday, November 28, 2009 1:26 PM
> To: Rob Atkinson
> Cc: towertalk@contesting.com
> Subject: Re: [TowerTalk] Bumps in coax, choosing coax
>
>
>
> Rob Atkinson wrote:
>   
>> I have done business with Davis RF and based on that I think it is
>> safe to say that they offer a quality product at a good price.  Which
>> brings me to the next point, to the ham who asked for advice on coax:
>> If I were you I would forget about the Times Microwave cable and the
>> 9913.  If you are interested in quality and low loss there is only one
>> way to go and that's with Andrew 1/2 inch heliax (LDF4-50). 
>>     
> I just gave away 200 feet of LDF4-50 with two new connectors.  Often you 
> can find it used, in good shape "with connectors" for very little. Of 
> course when looking for heliax I look for the 7/8" as at least around 
> here it's easier to find. I picked up close to 400 feet to use in the 
> repeater a few years back.
>   
>>  There is
>> of course an initial investment, but it pays for itself over time.  If
>> you need a run that will last at least 20 years, that you can bury,
>> drive over, step on,
>>     
> I'd be careful about the 1/2", it is not something I'd want to step on. 
> I have crushed the 1/2" stuff. and the bends require quite a wide radius 
> to prevent kinking.
>   
>>  and not worry about, this is the feedline for
>> you.  Also, the connectors are waterproof.
>>     
> As are most N type.
>   
>>    I advise checking the
>> price per foot from Davis--I think you will be pleasantly surprised.
>> It compares favorably with the prices for "made up" cables (ones with
>> the connectors installed on them) from other vendors that are far
>> inferior to Heliax.   Sure you have to get the Andrew connectors and
>> they aren't cheap,
>>     
> You should be able to find them for around $30 to $40 although some 
> places have much higher prices. They are *relatively* simple 
> construction made of brass and would be (again relatively) easy to 
> duplicate if you have access to a good quality lathe and the skill 
> needed...or a good friend who does.
>   
>>  but you only have to buy them one time.  Of course
>> this cable only works if you have a feedpoint that is physically
>> supported somehow.  Once you use Heliax any notion of going back to
>> anything else except for short jumpers will be unthinkable.
>>
>>   
>>     
> Don't forget the need for pigtails or rotator loops made of flexible 
> cable like BuryFlex.
>
> 73,
>
> Roger (K8RI)
>   
>> 73
>>
>> Rob
>> K5UJ
>>
>>
>>
>> <<<There are lots of whores in the cable business. Most are nothing but
>>     
> brokers
>   
>> -- they are buying and selling stuff they know nothing about, and buy low
>> sell high is the only consideration. Most of it is junk. There are no real
>> specs for performance, construction quality, or uniformity, and even if
>> there were, these turkeys wouldn't know how to test for them. They are
>> moving boxes.
>>
>> When you find "bumps" in new coax, you're dealing with JUNK coax. There's
>>     
> a
>   
>> REASON it's cheaper. Stick with REAL cable companies like Belden, Times,
>> Gepco, and Commscope, who actually manufacture their own cable. IF you buy
>> anything with someone else's name on it, it's probably a company that
>> doesn't mfr it, but buys it either from a mfr or one of those whores.
>>     
> There
>   
>> is good private-label cable around, but there's a lot more junk. A few
>>     
> years
>   
>> ago, I bought some excellent transmitting-grade RG6 with Pasternak's name
>>     
> on
>   
>> it. Comparing it's physical characteristics to the Belden catalog, I'd
>>     
> guess
>   
>> that it came from the Belden factory. I've not dealt with Davis RF or seen
>> any of their products, so can't comment on them. I've done biz with The
>> Wireman and feel that I got good stuff. I've bought connectors from RF
>> Connection and gotten junk. When I called to complain, I was told, "hams
>>     
> are
>   
>> cheap."
>>
>> If you don't buy Belden, Times, Gepco, or Commscope, make sure you  buy it
>> from a vendor you trust to 1) know the difference and 2) buy good stuff
>>     
> from
>   
>> quality mfrs.
>>   
>> _______________________________________________
>>
>>
>>
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>>
>>   
>>     
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