[Hackrf-dev] Amateur radio with HackRF One and gnuradio

Thomas Schirmer thomas.schirmer at web.de
Thu Sep 10 06:34:59 EDT 2015


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Hello Scott, 

I've seen attachment on the list already, graphic files and .grc files too.

It would be very nice, if you could post your .grc files to the list.


Many thanks in advance, 
Thomas,DG3NEO

> I don’t think this list is attachment-friendly, so I’ll send a screenshot 
> of my 2m Rx flowgraph to your email address.  
> Don’t panic -- it’s way more complicated than you need for starters.  
> I was looking at 3 FFTs — RF, IF and audio, and I included an 
> audio band-reject filter to get rid of CTCSS tones from repeaters.  
> Also had a variable RF gain control, a channel selector and a simple 
> variable squelch.  

> However, the basic “Hello world” ought to work fine if you just change 
> the frequency to your target, and replace the WBFM receive block with an 
 > NBFM receive block at 5kHz deviation.  
> Maybe that’s what’s causing your distorted audio…?

-Scott K5TA


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