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Re: [VHFcontesting] rover tech - coax

To: vhfcontesting@contesting.com
Subject: Re: [VHFcontesting] rover tech - coax
From: Bruce Herrick <bdh@teleport.com>
Date: Wed, 11 Jul 2007 14:19:21 -0600
List-post: <mailto:vhfcontesting@contesting.com>
I have to disagree.  UltraFlex is the way to go.  Remember that in a 
rover, everything moves.  UF will absorb some of the vibration that 
the rigid stuff will transmit to whatever it is connected to.  I have 
had failures of internal connections to antenna connectors due to the 
rigidity of LMR400 as opposed to something like RG213.  But LMR400 is 
superior performance wise.  There are always trade-offs.  UF is a 
good compromise.  You get what you pay for.

Bruce WW1M



>For my rover I use LMR-400 for 2m through 3456.   Each run is about 12' or
>so.   This is one of the advantages that a rover has, short feedlines.
>LMR-400 is wonderful stuff - excellent performance, moderately flexible
>with big loops where needed, rugged, the N-connectors are a breeze to
>install, and not too expensive.    I would not recommend the ultra-flex
>.... not needed for a rover.    Going to anything larger has little, or no,
>performance advantage, but is more difficult and costly to install.
>LMR-400 ... good stuff.   Been using it for multiple years (for roving) and
>have not had a failure with it.   I would not hesitate to use RG-213 for 6m
>through perhaps 432 given the short runs either.
>
>73, Jon
>W0ZQ/R
>
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