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RE: 2.4GHz signal source



This is a good method.

Bertrand (VE2ZAZ) has a good circuit layout on his website.

Check:

http://www3.sympatico.ca/b.zauhar/

It has worked well for me and is very easy to build.


GL

Mike
K9QHO

-------------- Original message from "Greg D." <ko6th_greg@hotmail.com>: -------------- 


> Hi Brian, 
> 
> 50mw is awfully strong for antenna testing. You generally want the weakest 
> signal that you can receive, otherwise you'll have an overwhelmingly strong 
> signal no matter which way you point the antenna. 
> 
> The best signal source that I used for AO-40 antenna testing was simply a 
> 50mhz can-type crystal oscillator with a short piece of wire sticking up 
> into the air from the output pin. I eventually put it in a small metal box 
> with a battery & 5v 3-pin regulator. The 48th harmonic gets you to 2401 
> mhz, +/- tolerance and temperature effects (not trivial when multiplied by 
> 48 times!), at about a billionth of a butterfly sneeze of power. But that 
> was more than enough for short range (10's of feet) testing, considering the 
> real target will be 10's of thousands of miles away. 
> 
> Greg KO6TH 
> 
> 
> 
> 
> 
> 
> Hi. 
> 
> In the AO40 days, seem so long ago, there where some 2.4GHz signal 
> source/beacons around, both homebrew and pro made. 
> Now im looking for such a device, output should be about 50mW or so, but 
> havent had much luck finding any. 
> 
> I need a signal source to test some amsat and wlan antennas, so the freq 
> should not be lower than 2.4GHz. 
> 
> Could someone point me to a maker or maybe better some homebrew? 
> 
> Regards 
> Brian 
> OZ1SKY ---- 
> ---- 
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