[Elecraft] P3 Applications

[Paul Christensen]

The noise signatures in Bill's link are very characteristic of switch-mode 
noise.  For example, take a look at the 80m NW sweep.  Classic switch-mode 
noise where 'bumps" are seen at precise intervals of the power supply's 
switching frequency.  At roughly -110 dBm, my guess is the source is not too 
far away, even with his directional antenna.  A noise blanker does little 
good with low-level switch-mode noise.

Paul, W9AC

----- Original Message ----- 
From: "David Cutter" <d.cutter at ntlworld.com>
To: "Willard Myers" <K1GQ at me.com>; "Elecraft Reflector" 
<elecraft at mailman.qth.net>
Sent: Wednesday, September 08, 2010 1:36 PM
Subject: Re: [Elecraft] P3 Applications


>From your website, Bill, remarking on nasty noises:

"It would be even more useful if there were a database of wideband RFI
signatures"

Perhaps with the wider use of panadapters such a database could be promoted.
Something tells me that PLT would feature in there.

David
G3UNA


Lyle (KK7P) and Al (W6LX) recently mentioned some nifty things we can do
with our P3s. I’ve written up a couple of things that I did with mine:
http://web.me.com/wlmyers/K1GQ/Documents.html. Please feel free to provide
feedback on the documents.

  Bill, K1GQ

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