[Elecraft] RF Ammeter

[Doug Faunt N6TQS +1-510-655-8604]

I couldn't locate the GM3SEK article (is it still there?), but this is 
also useful:
http://www.w8ji.com/building_a_current_meter.htm

And I believe that QST and/or the ARRL Handbook has information on this, 
also.

73, doug


On 18-Dec-11 19:17, Jim Wiley wrote:
>
> As everyone knows, "real" RF ammeters are becoming scarce,  or very
> expensive.  Does anyone out there have info on where to find a circuit
> that is relatively inexpensive that I could use as a substitute?
> Something using a toroid core plus diode, or something like that,  would
> be what I am looking for.   Not too complicated in any case, and
> absolute accuracy is not needed - a relative indication would be fine.
> The application is measuring RF current for a trailing wire antenna
> from an airplane.    Transmitter power is in the 100 watt range.
>
>
> Thank in advance
>
>
> - Jim, KL7CC
>
>
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