On Sunday 13 February 2005 23:37, Miguel wrote:
> Hello everyone
>
> thanks for reading my post..
>
> I have a uhf repeater in the ham band... I want to know which is a
> good cable coax to use to minimized the swr and good communications..
>
> some people tell me the lmr-400 others the rg-213
>
> but which one is better or is there something else...
>
> thanks
>
> 73
>
> Miguel,Ai4em
You can't minimize the SWR with coax--well, you could but only by
having coax so lossy that the returned RF is dissipated by the
loss coming back, which is definitely not good. ;-)
You don't say where you are, but in the US Andrew "Heliax" is
frequently available at really good prices, usually less than $1
per foot for the 1/4" ldf4-50. If you look on the net for surplus
dealers on the net you can find buys like this fairly often.
Connectors can be found at cheaper prices, too. There are
other kinds of Heliax as well; ldf5-50 is 7/8" and even lower
in loss. Thats harder to find but just today at a swap I got
65' of ldf5-50 with N connectors for $50. Great deals are
out there when you get lucky!
There was a lot of talk on this list about the reasons why
LMR wasn't good for repeater use. See the archives for
that.
Given the cost of Heliax these days, I'd use that.
--STeve Andre'
wb8wsf
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