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CW-Tone Generator - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


philliplaw
 Post subject: CW Tone Generator
Posted: Tue Feb 02, 2010 1:07 pm 
 
Lieutenant

Joined: Tue Feb 02, 2010 1:00 pm
Posts: 3
Looking for a cheap reliable solution to generate a clean CW tone with acceptable phase noise

I am looking for a cost effective way to generate a CW tone that doesn't cost an arm or a leg. Programmable PLL via Serial? USB control? Any idea?

Just don't want to end up using a signal generator for 2 fixed frequencies.


 
   
 
karthik
 Post subject: Re: CW Tone Generator
Posted: Wed Feb 03, 2010 12:00 am 
 
Colonel

Joined: Tue Apr 11, 2006 8:13 pm
Posts: 34
Are you looking for a single tone or 2 tone CW? You could get a connectorized oscillator for a single tone. Wenzel might be a good place to start.. http://www.wenzel.com/


 
   
 
philliplaw
 Post subject: Re: CW Tone Generator
Posted: Wed Feb 03, 2010 1:52 am 
 
Lieutenant

Joined: Tue Feb 02, 2010 1:00 pm
Posts: 3
Looking for two fixed frequency CW tones. Just need to be able to switch between them in the same test setup. Thanks.


 
   
 
fred47
 Post subject: Re: CW Tone Generator
Posted: Wed Feb 03, 2010 3:15 pm 
 
General
 

Joined: Wed Feb 22, 2006 3:51 pm
Posts: 104
Hi!

How clean is "clean"? What is "acceptable phase noise"?

For that matter, what frequency range are you looking at?

How far apart are the two frequencies?

Companies like Analog Devices often have evaluation boards for their RF products, like PLL chips and DDS chips.

Good luck!




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