Re: Availability of Mag Loop and other stuff...
Hi Arv, Very useful information and so useful that they can be used any orientation,they are a option but as my amateur radio course tutor says....you need as much wire in the sky as you can get....as a stating point to good Hf receive.
From: BITX20@groups.io <BITX20@groups.io> on behalf of Arv Evans <arvid.evans@...>
Sent: Sunday, June 2, 2019 6:19:39 PM
Subject: Re: [BITX20] Availability of Mag Loop and other stuff...
Antenna measurements are for the most part relative to some measured reference signal between
the antenna being tested and the remote reception point. Antenna at the remote reception point
would seem to be immaterial as long as it does not change characteristics during the tests. In most
antenna test ranges it is the device being tested that is rotated with the received signal at a fixed
point being measured. This allows measurement and documentation of signal levels at various
angles of radiation. Rotating or moving the receiving site is not necessary and would probably
invalidate the measurements.
Small loop antennas are interesting for another reason. They can be mounted and measured in
either horizontal or vertical position relative to the local ground plane, or at any angle in between.
This gives one an idea of which propagation angle might be more advantageous, but only an
idea of that. Propagation at later dates may totally invalidate any reference measurements that
have been made and published.
My 2 pence worth.
On Sun, Jun 2, 2019 at 9:39 AM ajparent1/KB1GMX <kb1gmx@...> wrote: