[Top] [All Lists]

Re: [TowerTalk] LMR 600 UF options ?

Subject: Re: [TowerTalk] LMR 600 UF options ?
From: Robert Harmon <>
Date: Mon, 23 Dec 2019 17:49:43 -0800
List-post: <>
Hi Rick,

I want the low loss of LMR-600.  (.3dB /100ft on 14Mhz) 
There are several choices.
* Regular LMR-600  has a nice PE jacket but solid center conductor 
(aluminum/copperclad)  not that flexible. 
* LMR-600 ultra flex which has a poor TPE jacket, but the center conducter is 
stranded copper, nice and flexible.

I would like LMR-600 UF with a PE jacket but not available.

I am planning to run 7/8"  hardline out to the top of the first section of my 
HDX589MDPL  (crank up tower) and then go with as low
loss as I can find "flexible" coax from there on up to the antenna.  I thought 
with LMR-600 I may not need a separate rotor loop either.

I will see if I can find loss info for RG-218 on 14Mhz    I found one table but 
it is for 50Mhz.  

It would be a lot simpler if I didn't have a crank up tower hihi


> On Dec 23, 2019, at 5:21 PM, Richard (Rick) Karlquist <> 
> wrote:
> On 12/23/2019 2:47 PM, Robert Harmon wrote:
>> I would like to use LMR-600 UF on my crank up tower all the way up to the 
>> antenna without a rotor loop.  From what I understand
>> the UF (ultraflex) has a stranded center conductor and would have the 
>> flexibility needed.   The only problem is that it has a TPE jaket
>> which is only good for 7 years or so.  The reguar LMR-600 has a  solid 
>> center condutor (aluminum/copper clad) not stranded, but
>> has the good TP jacket like Bury Flex has.
>> I can't have the UF with TP jacket.  :-(
>> Any other options that you know of for a low loss feedline (like the 
>> LMR-600) that is flexible and has a good jacket ?
>> Bob
>> K6UJ
> I don't completely understand your question, but what I
> use on my HDX-5106 is RG-218 to go to the top of the tower,
> and then a rotor loop consisting of a short section of Bury-Flex.
> The rotor loop is connected to the RG-218 with a rigid
> 90 degree adapter.  It works for me.
> Rick N6RK
> _______________________________________________
> _______________________________________________
> TowerTalk mailing list


TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>