Thread: Field Strength
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Old December 14th 03, 02:39 AM
Roy Lewallen
 
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It's too bad it isn't that simple.

A 1V/m field doesn't result in one volt at the feedpoint of a perfectly
matched one meter dipole or monopole, and the value it does induce
depends on the quality of the impedance match as well as the fraction of
a wavelength the one meter antenna length represents. And, if one volt
does appear at the feedpoint, it's very unlikely that a simple circuit
will measure it as one volt.

Probably best to stick with your $1.5 kilobuck meter if you really want
to measure field strength.

Roy Lewallen, W7EL

Active8 wrote:
On 13 Dec 2003 03:50:41 -0800, said...

What you are descrbing is a "signal sniffer", not a signal strength meter.


Who are you replying to? Paul did not say Signal Stength Meter, but
the guy you replied to kinda hints at it when he mentions power
level.

I would have to say that my 1GHz Signal Level Meter, which cost
$1500 would be the better than a relative field strength meter, but
if he measures say, 1V with his Tx off and 2V with it on, then
that's 1V and if his Rx antenna is a 1m dipole, that's 1V/m.

Mike