Then why did my 1-watt signal go 1302 miles the other week? I was sending
QRSS-30 and the receive station was southwest from here. My loop points
north and south. It usually goes out past 500 miles in QRSS and over 160
miles in CW with the receiving station listening to it with his ears. It is
an Ashlock loop maybe that is the difference???
Mike>WE0H
http://www.we0h.us/lf
WE 185.3026kc
QRSS & -.-. .--
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of hamilton mal
Sent: Tuesday, December 24, 2002 6:45 AM
To: [email protected]
Subject: LF: Re: Re: Loops again
----- Original Message -----
From: "Steve Thompson" <[email protected]>
To: <[email protected]>
Sent: Tuesday, December 24, 2002 7:30 AM
Subject: LF: Re: Loops again
----- Original Message -----
From: hamilton mal <[email protected]>
To: <[email protected]>
Sent: 23 December 2002 16:55
Subject: LF: Loops again
With all the loop talk that has been going on since before time began has
anyone found a design for a near perfect small loop, suppose its like how
long is a piece of string, obviously the bigger the better but then there
is
the diminishing returns senario, it there much noticeable difference
between
a 2 meter side square loop and a 4meter.
Which is better a single turn loop, several turns in series, several turns
in parallel and the best method of feed and matching at the loop. <snip>
------------------
This site gives a good treatise on loop antennas from first principles,
and
provides the maths to let you consider what to expect with changes in size
and numbers of turns.
http://www.ece.mcmaster.ca/faculty/georgieva/temp/Antennas_L11.pdf
Steve
Thanks Steve.
Its a wonderful article and has certainly refreshed my mathematical skills.
It starts off by saying that small loops are very INEFFICIENT and because of
the high losses really only suitable for Receiving purposes. Not very
promising.
73 De G3KEV
| 