[Lowfer] Medfer TX loop findings so far

[Brian Helms]

Bob

All conductors in the wire were tied together.  The shield in the cable is
pretty light duty but I still think that it could carry a few amps of
current without much of a problem.  Resistance check shows pretty low
resistance.  The resonating/ impedence matching network was the same with
both setups.

Brian Helms
KD4RLD
www.qsl.net/kd4rld
----- Original Message -----
From: "Bob Roehrig" <broehrig@aurora.edu>
To: <lowfer@mailman.qth.net>
Sent: Monday, February 18, 2002 9:04 AM
Subject: Re: [Lowfer] Medfer TX loop findings so far


> On Sun, 17 Feb 2002, Brian Helms wrote:
>
> > I put up a Tx loop measuring 3 meters per side this weekend and I tried
to
> > use some shielded cable that I had scrounged.  The cable was 8 conductor
and
> > was about .5 to .75 inches in diameter and I thought it would work great
due
> > to surface area of the wire.  After getting the loop resonated I called
Dex
> > to give me a signal report since he is only about 6 miles from the
house.
> > The signal was so weak he could barely make it out in argo.
>
>
> > I replaced the shielded cable with a single run of #14 copper
> > wire and it improved the signal by at least 10 db and brought my signal
well
> > above the noise at Dex's house.
>
> I find that hard to believe. Was the shield and all conductors tied
> together as a single conductor?
>
>
>                     73        Bob Roehrig        K9EUI
>                     Aurora University Telecom/IS dept.
>                     630-844-4898   broehrig@aurora.edu
>
>
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