J
From: James Rodenkirch [mailto:rodenkirch_llc@msn.com]
Sent: Monday, August 12, 2013 6:04 PM
To: Charlie Cunningham; jim@audiosystemsgroup.com; topband@contesting.com
Subject: RE: Topband: CAT5 twisted pair
OH...okee dokee on not needing the 2:1 xfmr
> From: charlie-cunningham@nc.rr.com
> To: jim@audiosystemsgroup.com; topband@contesting.com
> Date: Mon, 12 Aug 2013 17:12:59 -0400
> Subject: Re: Topband: CAT5 twisted pair
>
> 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:topband-bounces@contesting.com] On Behalf Of Jim
Brown
> Sent: Monday, August 12, 2013 5:03 PM
> To: topband@contesting.com
> 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
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Topband Reflector
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