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

[ZR]

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 at karlquist.com>
To: "Bill Wichers" <billw at waveform.net>
Cc: "TopBand List" <topband at contesting.com>; "Herb Schoenbohm" 
<herbs at 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
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