[Elecraft] Cables

[Jim Brown]

On Sat, 14 Nov 2009 12:59:17 -0500, Phil LaMarche wrote:

>Is there anywhere to purchase RCA cables with 100% shield?

First, 100% shield is meaningless. What matters is shield 
RESISTANCE. Second, RG58 that has copper braid shield works quite 
well. You  buy some RG58, you buy some Switchcraft or Neutrik RCA 
connectors, and you solder the connectors onto the cable. 

Premade RCA cables have very flimsy shields (or are often not 
shielded at all, but rather have a single wire inside the jacket), 
and they are usually made of cheap metals (or thin metal coating) 
that causes dissimilar metal problems and/or high contact 
resistance when plugged into your radio. 

Switchcraft and Neutrik RCA connectors are widely available from 
real industrial electronics vendors like Allied, Newark, Digikey, 
etc. They aren't cheap, but they are far more robust, and their 
contacts are made of good metals that don't have these problems. 

Another point. Study my Ham RFI tutorial and the power point on 
Ham Interfacing, which show you how to kill hum and buzz simply by 
bonding all your equipment together and getting power for all of 
it from the same outlet. 

http://audiosystemsgroup.com/publish

73,

Jim Brown K9YC