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Old October 25th 06, 09:17 PM posted to rec.radio.amateur.antenna
Ian White GM3SEK Ian White GM3SEK is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 232
Default Hf Antenna Question - so what's the conclusion?

Cecil Moore wrote:
"Bunched" and "flat" both mean the same to me - the cable is wound
into a flat coil like a length of rope. The actual choice is between
that shape and a cylindrical solenoid shape.


I don't think that's true, Ian. There are three ways to
wind a choke. 1. helical, 2. spiral, 3. random I'm pretty
sure "bunched" means "random" and *not* flat. Maybe that
is the origin of our disagreement over "bunched". If the
bunched coil was really random scatter winding, would you
like it as much?

Sorry, maybe there's language barrier here. Imagine coiling a rope in
your hand like a cowboy, then laying the coil on the ground. I meant a
"flat" coil in that sense, as opposed to the other way of winding these
chokes on a cylindrical former.


There are details of HB meters on my website, or the MFJ-854 is a
good commercial alternative (but definitely not the MFJ-805).


I've got the MFJ-853. It snaps but doesn't unsnap. :-(


The 854 that I reviewed for Radcom was the same. We both got one that
had the core assembled upside-down, so instead of showing you how to
snap the plastic catch open, the instruction manual shows you how to
break it.



--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek