Jim, I completely agree with Jim Brown! I noted those 2:1 transformers the other day and meant to send you a note to say that I wouldn't bother! That little bit of mismatch loss won't make any difference!
73, Charlie, K4OTV -----Original Message----- From: Topband [mailto:[email protected]] On Behalf Of Jim Brown Sent: Monday, August 12, 2013 5:03 PM To: [email protected] Subject: Re: Topband: CAT5 twisted pair On 8/12/2013 1:50 PM, James Rodenkirch wrote: > as well as a 2:1 transformer just prior to the input to the shack. While there's nothing wrong with attempting to match the termination Z, don't assume that it will do much. The input Z of the RX may not be 50 ohms (although the doc may say it is), a small mismatch won't contribute enough loss to matter, and it does not affect noise rejection. What matters is balance and twisting. 73, Jim K9YC _________________ Topband Reflector _________________ Topband Reflector
