RG-223 - RG-142 & RG-400 Coax Talk
> "Sid" <purvis...@...> wrote: > I have seen a lot of jumpers, interconning cables, > duplexer cables, etc made using RG-142 and RG-400 (the > 400 is preferred). However, RG-223 is also silver, > double shielded,very flexible, and also about RG-58 size. > Any reason why RG-223 would not work just as well; other > than it is not a teflon cable? Sid. RG-223 is quite usable but will have more loss than RG-400 type cables. The question would be if the loss is enough to be an issue. For VHF and Lower frequencies there's not enough loss in short runs to really sweat the difference. At 450 MHz the attenuation/loss in modest to lengthy runs of RG-223 compared to similar size Teflon type coax do start to add up, then it's a judgment call. In longer feed-line runs used at 450 MHz you might want to jump to the next increment/size up coax in the form of 1/2 inch or similar. RG-223 coax seems a lot easier to work with inside very tight spaces where sharp bends & curves are required. I believe I have seen it used as the default interconnecting coax used inside a Motorola Radius Style Repeater System (with internal duplexer included). Sometimes you can find real deals on runs of both the Teflon and 223 type cables. s.
