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" <[email protected]> Cc: <[email protected]> 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 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
