Heat Cantenna

[Jack Barnes]

As I recall there was an article in QST around 1968 that featured the
Cantenna. The gist of the article was a modification to the Cantenna that
replaced the solid state diode with a vacuum tube dual diode(6AL5). I
modified my Cantenna as per this article and still use it to this day. It
allowed measurement to the kilowatt level and a simple math conversion to
calculate actual power based on the value of the load resistance for the
particular Cantenna you might have. I will look up the article if anyone is
interested.

Jack WA7KMR

----- Original Message -----
From: "Stephen Tetorka" <StephenTetorka at CS.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Friday, September 03, 2004 1:47 PM
Subject: Re: Heat Cantenna


> Also, I seem to recall the resistance of my Cantenna was around 42 ohms.
> Thing still does it work for me.
>
> Glen Zook <gzook at yahoo.com> wrote:
>
> >If he has a calibrated r.f. voltmeter he could read
> >directly across the resistor!
> >
> >Then again, all of the associated problems with the
> >accuracy of the circuitry is why Heath said to use the
> >reading as "relative" only!
> >
> >Glen, K9STH
> >
> >
> >--- StephenTetorka at cs.com wrote:
> >
> >Other factor that diode is not linear, so I'm told.
> >
> >
> >=====
> >Glen, K9STH
> >
> >Web sites
> >
> >http://home.comcast.net/~k9sth
> >http://home.comcast.net/~zcomco
> >
> >
> >
> >
> >__________________________________
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>
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