On Thu, 8 May 2008, Eric Lemmon wrote:
> Most repeater builders will agree that jumpers inside the repeater
> cabinet should always be double-shielded, and that they should be
> either double silver-plated braided shields, or a flexible
> solid-copper shield such as Heli-Flex. Genuine RG-214/U or RG-142/U
> or RG-400/U cable is best, in my opinion. Stay away from
> dissimilar-metal cables like Belden 9913 and others that combine
> copper braided shields with aluminum foil. Avoid using any adapters
> or barrels. If your TX output jack is an N female and your duplexer
> input jack is an SO-239 (UHF), then you should make up a one-piece
> cable with an N male plug on one end and a PL-259 plug on the other
> end. Ideally, these should be crimp-on connectors that are
> silver-plated, with gold or silver plated center pins. The use of
> high-quality cable and connectors inside the cabinet will reduce the
> leakage between TX and RX to a very low level, which *may* marginally
> increase range due to a reduction and possible elimination of desense
> caused by TX signal ingress.
So RG-142 > RG-213? I've got a six-foot jumper of RG-213, which I can
replace with some RG-142, but the 142 is .25" diameter and the 213 is
.5" diameter.
--
Kris Kirby, KE4AHR <[EMAIL PROTECTED]>
But remember, with no superpowers comes no responsibility.
--rly
