Real-Time Spectrum of a Moteino Transmission

[john k2ox]

I've attached a RTSA snapshot a Moteino sending 1000 bps at 10 KHz deviation.  I think it looks pretty neat.  Enjoy.

[Felix]

You bet it does. I dare not ask how much such an analyzer cost... 

[john k2ox]

They start at $35K.  This one is fully loaded abt $100K.  I can fix you up. 

[Felix]

WHOA! 

[jbeale]

It is less pretty, less accurate, and less sensitive, but you can do something similar for under $100 with a cheap 'ezcap' USB dongle and HDSDR / Spectravue software.  I presume as a new user I cannot post a direct link to it, but search for
"915 MHz band spectrum of JeeNode" site:picasaweb.google.com and you'll see my result using those tools.

Or maybe a direct link does work:

[Felix]

Thanks, good to know!