Topband
[Top] [All Lists]

Re: Topband: CAT5 twisted pair

To: topband@contesting.com
Subject: Re: Topband: CAT5 twisted pair
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Mon, 12 Aug 2013 14:03:20 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>
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

<Prev in Thread] Current Thread [Next in Thread>