When my rig gets a chance to convert those audio freqs to 14 MHz, they
_become_ RF.
My detected audio from the other rig (receiver) feeds an audio analyzer. I
check baseline IMD from rig alone, then rig plus amp. Diff is amp. Right?
Jerry W4UK
At 05:39 AM 12/17/2001 -0500, alex wrote:
>A two tone IMD test on an RF amp does _not_ use audio frequency!
>
>For your test use two RF generators. One set for 30.000.00MHz
>the other set to 30.001.00 MHz. Look at the output with an
>Spectrum analyser.
>
>
>Alex
>===================================
>If we can accept the notion that GUNS are
>the killers and not the people, why is it that
>we can not accept the idea that CARS are
>the speeders and not the drivers?
>
>Alex, trying to understand the world around.
>
>==================================.
>
>----- Original Message -----
>From: "Jerry Flanders" <jflanders2@home.com>
>To: <amps@contesting.com>
>Sent: Sunday, December 16, 2001 5:09 PM
>Subject: [AMPS] Two-tone audio generator for testing IMD?
>
>
> >
> > Is software available for the PC sound card to generate two audio tones
>for
> > doing some IMD tests on this 5CX3000A amp that is slowly taking shape
>here?
> >
> > Since the driving rig is already interfaced to the PC's sound card, I
> > _think_ all I need to generate tests is a piece of software to generate
>the
> > tones (along with my other rig and other PC to view the spectrum with its
> > own sound card and software).
> >
> > Know of any dual-tone generating software cheap/free? Used it for this
> > purpose? If no dual-tone software, what single-tone software is available?
> > (I have two sound cards in this PC and guess I could mix externally.)
> >
> > Jerry W4UK
> >
> >
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