TwoToneDetect and RTL Stick

[webstar22]

Has anyone setup TwoToneDetect to use audio from a RTL stick. I got a spare Pi2 and Pi3 and I was thinking of using the Pi3 to replace my windows TTD. But rather than a USB sound card to get the audio from a RTL stick. https://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/

 

[DC31]

Has anyone setup TwoToneDetect to use audio from a RTL stick. I got a spare Pi2 and Pi3 and I was thinking of using the Pi3 to replace my windows TTD. But rather than a USB sound card to get the audio from a RTL stick. https://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/

It has proven to be challenging. I don’t know of anyone who can claim success. If you break that barrier, make sure that you report back!

 

[webstar22]

It has proven to be challenging. I don’t know of anyone who can claim success. If you break that barrier, make sure that you report back!

Found this link last night https://brooksgarrett.com/blog/2015-12-08-configuring-sdr-for-fire-pager-scanning/

 

[DC31]

Found this link last night https://brooksgarrett.com/blog/2015-12-08-configuring-sdr-for-fire-pager-scanning/

Take it one step at a time. First, see if you can get intelligible audio out of the pi using the str stick. Figure out the offset for your stick.

 

[motomeso]

I’m doing 6 VCO’s / TTD instances on a VM using an RTL. I had to run a separate Debian VM running RTL_TCP as the Windows USB pass through isn’t great for SDR’s.

 

[JACK26]

There is this link about rpi using sound card. Probably a way to adapt it to rtl-sdr.
TwoToneDetect on a Raspberry Pi | TwoToneDetect

 

[webstar22]

Ok I just got mad at this today and gave up. Keep on using the Baofeng;'s

 

[JACK26]

rpi with rtl-sdr

Not sure how far along you are but for me it was a struggle to get an rpi to reliably work with an rtl-sdr.
Finally have it working well with restart code when connection is lost. Restart code is here if interested:
https://goo.gl/9p1oZJ

Original wiki for rtl-sdr build is here:
Raspberry Pi RTL-SDR Broadcastify - The RadioReference Wiki
Note: Replace the instructions for installing the rtl-sdr software from osmocom with:
git clone https://github.com/keenerd/rtl-sdr/

Bottom line is that the rtl-sdr is also a sound card except it includes a tuner and uses different drivers.

 

[aaknitt]

Ok I just got mad at this today and gave up. Keep on using the Baofeng;'s

I know the feeling

 

[JACK26]

I know the feeling

Does that mean no one has got it working yet ( ie TTD on rpi with rtl-sdr)?

Trying to work through instructions starting with DC31's post 549 here:
https://forums.radioreference.com/s...nedetect-raspberry-pi-how-28.html#post2584793
Also referenced on your download page.
So far the post 549 v 0.68 instructions differ from current v 0.70. Some files seem to be missing with v 0.7.
iIs v 0.68 still available?

DC31, I was wondering why ubuntu was used? I have debian pixel installed and working dual rtl-sdr feeds that took me about 10 months to work well so there is no way I'm starting over with a different o/s.
So far finding debian alternatives for ubuntu instructions that don't work with debian.

 

[DC31]

Does that mean no one has got it working yet ( ie TTD on rpi with rtl-sdr)?

Trying to work through instructions starting with DC31's post 549 here:
https://forums.radioreference.com/s...nedetect-raspberry-pi-how-28.html#post2584793
Also referenced on your download page.
So far the post 549 v 0.68 instructions differ from current v 0.70. Some files seem to be missing with v 0.7.
iIs v 0.68 still available?

DC31, I was wondering why ubuntu was used? I have debian pixel installed and working dual rtl-sdr feeds that took me about 10 months to work well so there is no way I'm starting over with a different o/s.
So far finding debian alternatives for ubuntu instructions that don't work with debian.

I don’t remember why I was using ubuntu. I have tried just about everything that I can think of without success. There appear to be a few people who have made it work but they are scarce. On the pi I have difficulty getting intelligible audio from the sdr stick. If I try an FM radio station or some other known source the audio is acceptable. If I try uhf 460.400, no luck at all. All this makes me wonder if some frequencies work when others don’t. Or is it some part of the correction factor that I don’t understand. If I plug the same sdr stick into a Mac laptop, it gets the 460.400 fine. I have spent WAY too much time on this. It has beat me down and I declare defeat.

 

[JACK26]

Big problem with rtl-fm is with -g (gain) and -l (squelch) setting. These settings seemed to interact with each other and critical to signal strength and antenna position. Lot of trial end error tweaking to get right.
Have 2 feeds working well at around 460-480Mhz but tweaking was one of the major time consumers.