Hello Warren,
I don't remember exactly in which group it was (possibly the *V*LF
group) but there was an interesting topic about how to 'arrange' a given
number of ferrite rods... the result was bundling them "in parallel" was
much inferior than arranging them "in series" to form a long, but thin
rod. This was proven by experiment here, but the 60 cm long ferrite
antenna was still inferior to a single-turn air core loop with 60 cm
diameter (on VLF).
All the best for 2014,
Wolf.
Am 28.12.2013 17:26, schrieb Warren Ziegler:
Hello the list,
I have been searching for an article posted a few years ago
concerning receiving loops with a title like "Calibrating Receiving
Loops Using DFC77" - as I recall the main thrust of the article is
that there is an asymptotic limit to the sensitivity of ferriite loops
as you increase the size, and that limit is soon reached. Can anyone
point me to a copy?
(Searching for the article is what prompted me to check the
Yahoo group).
Many thanks & HNY
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
WG2XRS/1
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