[Lowfer] 8 kHz VLF loading coil idea

[Ed Phillips]

Bill Ashlock wrote:
> 
> Ed,
> 
> >You could measure it easily enough on an antenna range but I suspect that
> >in A/B over the air tests it >would be hard to tell which was which.
> 
> Right. I've run a few 'stepped power' tests like this with my computerized
> setup and the results were as anticipated.
> 
> >P.S.  In spite of all that I like high Q coils for their intrinsic
> >properties, whether the do any good or not.
> 
> I hear ya.  Speaking of over-emphasis on the loading coil as the sole
> provider of a beacons effectiveness, do you recall a certain guy a couple of
> years back that announced he was going to set the record for Lowfer range
> via this huge loading coil wound on a fiberglass drum?  Once constructed,
> I'm not even sure the coil had a Q worth bragging about ........ but it WAS
> big.  Of course the one of the nice features of this loop stuff is that the
> radiated power IS directly proportional to the Q of the loop. (Sorry; always
> have to work in a plug for loop antennas into all posts <Gr>)
> 
> TGIF...
> 
> Bill

	The reason why the Q of a transmitting loop is so important is that it
has a very low radiation resistance and hence efficiency. Electrically
small loops work, of course, and have been used for a long time for
directional applications as the old A-N LF radio ranges.  I've always
been astonished by how well you guys with loops are getting out.  Those
of us with verticals have our ground losses to contend with, of
course...........

Ed