On Sat, 05 Feb 2005 07:01:34 +1100, Bob Bob
wrote:

You dont mention the freqency in use or the distance between antenna and
FSM. There is some kind of optimum or minimum distance (in wavelengths)
that I dont remember off hand

You dont seem to be allowing for ground effects and the desired angle of
measured radiation. (If that is important..)
'

It is for testing HF antennas, but no reason it can't work for VHF as
well.

After writing this, I was thinking of the G5RV, it has a cloverleaf
pattern so it might register as a loss since the antennas would be
broadside to each other.

I don't know the distance for the FSM. I suspect it would have to be
a good distance away. probably a wave length or more.


This would work best with a beam antenna as the lobe would be
consistent. but a 3/2 wave antenna would have different radiation
lobes so it might register a loss instead of the gain it actually has.

It is a thought, but I may have to reconsider it.

Thanks

Buck
N4PGW

--
73 for now
Buck
N4PGW

Buck,
Using more than one 'station' for the FSM should take care
of the radiation pattern variatons. The more 'stations', the
better (as in 180 of them, or more, depending on the antenna?).
'Doc

On Sun, 06 Feb 2005 01:08:37 GMT, 'Doc wrote:

Buck,
Using more than one 'station' for the FSM should take care
of the radiation pattern variatons. The more 'stations', the
better (as in 180 of them, or more, depending on the antenna?).
'Doc

I think you are correct. Either that or a rotatable antenna.


If the antenna is supposed to have a clover leaf pattern, then maybe
just setting up the FSM in the angle of the lobe.

Just a thot.


--
73 for now
Buck
N4PGW