If you calibrate the loop it is not nessecary to use an untuned loop. If
you use a tuned loop the output voltage will be much higher (factor Q, can
easily be 100 or more). This will allow to measure at larger distances.

The fact that Christers measures 6dB difference on 2 places each 2km from
his TX is interesting. I don't believe that the antenna can be that
directive, so there must be another reason.

73, Rik  ON7YD


At 22:09 27/02/00 +0100, you wrote:

Hello All

Thanks to PA0SE for suggesting the calibration method.
I tried this method this evening and believe I'm somewhat closer to the

truth...

Obviously the measuring loop with the connection wiring was resonant far

lower in frequency than expected. This made the figures a bit optimistic.

Now I have a 6,3 dB difference between calculated (2,4 W) and measured

radiated power (0,65 W).

More details on my home page
http://home5.swipnet.se/~w-54761/fs.htm

73
Christer
SM6PXJ