Why do you believe that double shielded cable is necessary for an antenna run? What are you trying to keep the signal out of? Inter-cabling within the cabinet needs to be double shielded to prevent interaction between the TX and RX portions, but once those signals are merged at the output of the duplexer they are both on the same feedline anyway and double shielding is expensive and unnecessary. For short antenns runs, RG213 is actually an excellent choice. The only exception to this is if there is no duplexer being used and the repeater is operating on split antennas with parallel feedline runs, then 100% shielding is necessary. Under these circumstances LDM400 or 9913 would be a good choice if heliax is not available affordably since the cables are not being used in a duplex setting.
Dan N8DJP Date: Tue, 11 Nov 2003 15:38:12 -0500 From: Jim <[EMAIL PROTECTED]> Subject: Re: Static / desense problems Gene Colson wrote: > And I am going to once again proclaim that with proper connectors, LMR 400 > is as good as it gets.No more noisy that RG213. I am using it on 900 , 440 > and VHF duplexers and assure you , there are no problems, > Gene W7UVH > Of course not-RG213 is unsuitable for duplex as well, as it is NOT double shielded!!! Or do you mean RG-214, which IS double-shielded? And Andrews LDFwhatever-50 is as good as it gets for feedline for ANY application!!!!! (well, maybe a few exceptions, like if you need radiating feedline, or plenum-rated...) -- Jim __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
