RF probe?

[Ken, WA2LBI]

Steve,

You are correct about the Cantenna. That circuit is simply an RF detector that
indicates relative output.

I believe you can use any RF probe you can find as long it was designed to work
with a VTVM or DMM that has at least a 10 megohm input. You can make an adapter
to interface it to your particular meter or just install the proper mating
connector.

Ken, WA2LBI
wa2lbi at arrl.net


Quoting Stephen Tetorka <StephenTetorka at CS.COM>:

> Thank you, Mark:
>
> My Heath Cantenna has an output jack to which I attached my VTVM to read the
> DC voltage.
>
> I did not use an RF probe in this case.
>
> This voltage comes through a diode and dropping resistor...so I gather it is
> only a  relative voltage reference and can not be used to calcuate the
> wattage
> into the dummy...esp since diode are non-linear.
>
> In order to estimate or calculate the wattage into the dummy I would need the
> RF probe voltage measurement directly across the dummy resistor...is this
> correct?
>
> Now...how do I select an RF probe for my VTVM?
>
> Tnx,
> Steve
>
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