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FW: [AMPS] Peak reading: P-3000 & Bird 43's

To: <amps@contesting.com>
Subject: FW: [AMPS] Peak reading: P-3000 & Bird 43's
From: Peter_Chadwick@mitel.com (Peter Chadwick)
Date: Thu, 24 Jun 1999 11:56:00 +0100

> Jim says:
> 
> 
> >So,  where  does the RF Applications Inc.,  P-3000
> >fit into this discussion?  Have just had mine upgraded
> >at the factory to V2.0 firmware.  Unit uses 1N5711
> >diode detectors.  
> 
> First point is that at low levels, the detectors go to a square law.
> That's just to complicate the issue. The next question is what do you mean
> by 'peak power'?
> 
> Using a peaking capacitor with a diode rectifier to provide a voltage
> hopefully close to the peak of the RF signal gives answers dependent on
> the form of the signal. For something like a Bird, the PEP on 2 tone is
> (pi/2)*2. Change the modulation, and it's a different factor. I'd argue in
> favour of measuring the actual peak envelope voltage with a 'scope, and
> work out the PEP from that.
> 
> 73 
> 
> Peter G3RZP
> 
> 

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