[TowerTalk] LMR600

[K8RI on TowerTalk]

----- Original Message ----- 
From: "Jim McDonald" <jim at n7us.net>
To: <towertalk at contesting.com>
Sent: Sunday, November 26, 2006 9:02 PM
Subject: [TowerTalk] LMR600


> Is LMR600 or the equivalent too stiff to pass through three 45-degree 
> sweeps
> in a 4" PVC?

I'm running it through three 45s and one sweep 90.  I use a messenger cable, 
tape the ends to a point, and use *LOTS* of cable pulling soap. It is stiff.

> How about with an 89' crank-up tower?  I am trying to decide

I've not tried it, but IF you have room you *might* be able to get away with 
letting the coax coil around the tower, but that would probably take up a 
lot of space. I seriously doubt if it'd work well, but maybe someone on 
there has tried it.   I am using three turn coils of LMR-600 at the top of 
the tower in place of rotator loops.

> whether to reuse my Davis RF Bury-Flex or replace it.  This antenna, a 4L
> SteppIR, will have 6M on it, and I've never had to be concerned with
> attenuation for that band before.

As a personal opinion I'd reuse the Bury-flex if it's in good shape and the 
run is not long.
What's the loss calculate out for the length of your run?
I'm putting in two runs of LMR 600 and one run of 5/8" Heliax, but it's 228 
feet to the antennas.


>
>
>
> Jim N7US
>
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>
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