we used a 1N34 diode and audio oscillator, just to measure the 
intensity of the field strength, with a pot to vary the frequency of 
an oscillator, and that worked great for tuning the rig for the highest output.

At 07:48 PM 11/11/2015, you wrote:
>Ed,
>Yeah I know you don't want to build, but since I don't know of a commercial
>device, there is at least one design in the
>Smith-Kettlewell Technical File
>http://legacy.ski.org/rehab/sktf/index.html
>It's based on a very old circuit from the braille technical press days
>called "audio gimmick"
>two transistors a simple audio transformer and a few parts.
>Look for the article called
>"gimmicks old and new" I think that's where you'll find the field strength
>meter.
>
>Let me know if you can't find it and care <GRIN>
>73
>tom Fowle WA6IVG
>
>On Wed, Nov 11, 2015 at 03:27:40PM -0700, Ed Malmgren wrote:
> > Where can a person get a field strength meter, audio of corse.  I 
> am not in
> > the moode to build things other than antennas any more? Could it 
> be lazy or
> > have I done too much of those kind of things hi hi.  73
> >
> > ED K7UC