[600MRG] Definition needed - V/m

[William E. Isakson]

Ken, generally you also have to specify the frequency of the measurement.
 e.g __V/m at __hz.

--------


Bill Isakson     AC6QV
Roseburg, Oregon USA
bill.isakson at gmail.com

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On Wed, Mar 12, 2014 at 4:24 PM, Kenneth G. Gordon <kgordon2006 at frontier.com
> wrote:

> On 12 Mar 2014 at 15:02, Glen Zook wrote:
>
> > It is the field strength measured at various distances from the antenna.
> There
> > are specialized receivers calibrated to do this. These receivers use
> specific
> > antennas, specific feed line lengths, and so forth. The "S" meter is
> calibrated
> > in the microvolts per meter. I do have one of these receivers and special
> > antenna. However, it is for the 375 MHz to 1000 MHz range!
>
> I found a very short definition in the NM-20B manual: "One volt per meter
> is
> equivalent to a potential of one volt induced in an antenna having an
> effective length of one meter."
>
> So, I'll use that.
>
> I'll bet the 375 to 1000 MHz "meter" you have is either the Stoddart NM-50,
> or the military equivalent, the AN/URM-17.
>
> This page:
>
> http://online.sfsu.edu/hl/src.html
>
> will give you some information. I have manuals for most of those shown
> there.
>
> I am actually quite pleased that my AN/URM-6(*) 3 foot diameter loops are
> resonant at 500 KHz. I intend to put one up asap for receiving on the 600
> meter band.
>
> I'll eventually mount it on some sort of rotator so I can tune for youse
> guys.
>
> The only thing I am not sure about is whether it would be better to mount
> it
> on top of our roof, or down closer to the ground.
>
> Ken W7EKB
>
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