[Elecraft] How to demo P3/K3?

[Steve Ellington]

I've seen this device used at several hamfest for demonstrating ICOM rigs 
such as the 7600 and Flex Radio. It's called the Time Machine.
http://www.expandedspectrumsystems.com/prod2.html
It's hard to tell the difference in a recording and the real thing.
A few years ago at the Dayton fest I stumbled across a booth with this setup 
and found myself tuning through a huge CW contest. It totally fooled me! 
Every receiver function worked just like it was the real thing.
Steve
N4LQ
----- Original Message ----- 
From: "Lyle Johnson" <kk7p at wavecable.com>
Cc: <elecraft at mailman.qth.net>
Sent: Monday, August 09, 2010 10:28 AM
Subject: Re: [Elecraft] How to demo P3/K3?


>
>>> Looks like we may have someone bring a P3 to demo at the Huntsville (AL)
>>> Hamfest. Is there a way to demo it, connected to a K3, without an 
>>> antenna?
>>> We'll be deep in the Civic Center.
>
> I've tried two demos of the P3 inside a building.
>
> The first was in a restaurant in Tucson, AZ.  We were able to pick up
> WWV and look at its sidebands, but it wasn't easy!
>
> The second was in a restaurant north of Seattle.  We finally found one
> weak AM broadcast station.
>
> In both cases we had to connect up a fairly lengthy piece of wire: about
> 20' in one case and 60' in the other as I recall.
>
> In your case, I'd probably bring along a KX1 or some other QRP rig, and
> a couple of dummy loads, and then observe the signal from your QRP rig.
> All you can be certain of at the convention center is that you'll pick
> up plenty of noise from lighting fixtures and who knows what else, and
> you wont; find signals to demonstrate with :-(
>
> At hamfests, Elecraft uses a device that can record and playback a
> significant chunk of RF spectrum to create a usable RF demonstration
> environment.
>
> 73,
>
> Lyle KK7P
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