Rik,
I really appreciate your efforts on the TX loop antenna section. I'll send
you a bunch of info from this end.
My bet is that these antennas will reach a popularity almost equal to the
vertical as soon as the technical fine-points and environmental factors are
understood. At the present time the only three 1w Lowfer beacons operating
in this area of the US are all TX loops with a fourth about to be assembled.
Bill A
-----Original Message-----
From: Rik Strobbe [mailto:[email protected]]
Sent: Tuesday, March 12, 2002 5:02 AM
To: [email protected]
Subject: LF: investigating loop antennas
Hello all,
the recent discussions on loop antennas inspired me (at last) to start with
the loop antenna section of my "antennas for 136kHz" webpage
(http://www.qsl.net/on7yd/136ant.htm)
I already have some basic information about loop (as transmitting antenna)
but I'm still looking for more info.
In particular I am looking for :
1. practical results with loops as transmitting antenna
- measured loss resistance (eventual loop-current vs RF power) related to
the loop dimensions and used wire
- other details on loops that were 'real world' tested (dimensions,
eventual drawing etc...)
- matching loop antennas
- tips for contructing loop antennas (do's and dont's)
2. efficiency of loop antennas
- how to calculate the radiation resistance
- overview of expected losses : copper-loss, ground-loss (edison effect ?),
proximity effect etc...
Of course any other information about transmitting loops is most welcome. I
assume that short info can be sent via the reflector, longer mails and
mails including attachments should be sent direct to me ([email protected]).
73 and many thanks in advance,
Rik ON7YD
*********************************************************************
This footnote confirms that this e-mail message has been scanned for
the presence of known computer viruses by the MessageLabs Virus
Control Centre. However, it is still recommended that you use
local virus scanning software to monitor for the presence of viruses.
*********************************************************************
*********************************************************************
This footnote confirms that this e-mail message has been scanned for
the presence of known computer viruses by the MessageLabs Virus
Control Centre. However, it is still recommended that you use
local virus scanning software to monitor for the presence of viruses.
*********************************************************************
|
