Topband
[Top] [All Lists]

Re: Topband: Using CAT5 in place of coax (was video baluns)

To: <richard@karlquist.com>
Subject: Re: Topband: Using CAT5 in place of coax (was video baluns)
From: "ZR" <zr@jeremy.mv.com>
Date: Mon, 7 May 2012 21:27:30 -0400
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Loss can be mitigated by a preamp at the antenna end.

One application would to be to feed multiple Beverages at a hub without a 
relay box with its isolation problems and intermittents.

Carl
KM1H



----- Original Message ----- 
From: "Rick Karlquist" <richard@karlquist.com>
To: "Bill Wichers" <billw@waveform.net>
Cc: "TopBand List" <topband@contesting.com>; "Herb Schoenbohm" 
<herbs@vitelcom.net>
Sent: Monday, May 07, 2012 8:07 PM
Subject: Topband: Using CAT5 in place of coax (was video baluns)


>I did some careful measurements of CAT5 cable a few years ago
> using a 4 port network analyzer (NOT a 2 port VNA with baluns).
> On my random sample, the characteristic impedance was within
> 5% of 100 ohms.  The cable is fairly lossy, which is no
> surprise given the tiny wires.  There doesn't seem to be
> any compelling reason to use it in place of RG-6.
>
> Rick N6RK
>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1424 / Virus Database: 2411/4983 - Release Date: 05/07/12
> 

_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK

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