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Old June 25th 06, 04:52 AM posted to rec.radio.amateur.antenna
Lee
 
Posts: n/a
Default Magloop and ground mat blues.....


"Dan Andersson" wrote in message
...
Lee wrote:

snip...

Lee......G6ZSG.....



Lee,

Try mounting your loop horizontally instead. Look at the MFJ mag loop.


Can`t afford the MJF on a pension besides for £50, mine works as well as the
MJF probably better as i use copper tube, MJF use aluminium!! and mine was
£350 cheaper.........

Thought about horizontal and high but the neighbours object altho` my tower
has been there before they moved in.......keeping the peace i suppose!!.

By doing so, you will have a significantly lower pattern of radiation from
your loop. You can also use a remotecontrolled LC network to change
directivity of the mag loop without a rotor. However, it's simpler with a
rotor.


Yes, once again it`s the height.

To avoid skewed directivity from your loop, you can feed it with a

balanced,
dual gamma match. Combined with a RF trafo with a centre tap on the
secondary side ( antenna side ) connected to the zero point at the loop,
you get a more equal pattern of radiation.


I`m currently feeding with a faraday loop.....

Don't bother increasing the mount unless you have electrically conductive
objects nearby. A loop does not need a groundplane.


That`s what i thought.

As long as you can remotely tune and direct your mag loop, you actually

have
a rather good antenna. Don't listen to much to these who have acres of

land
and no neighbours but have fun making QSO's instead!


Thanks.

Lee.....G6ZSG.....


Cheers

Dan / M0DFI