New Software Defined Radio software! Pi/Windows/Linux/Mac

[@radiosification]

I've been using SDR# for a long time. That has had a "filter audio" checkbox as long as I can remember so is another program to try out if you're interested. It also has lots of plugins like for decoding digital voice modes.

[@ferrumignis]

That's Windows only isn't it?

[@SomeTechGuy666]

@@ferrumignis Yes it is.

[@RobertYaffee]

Nice work with that PL tone nullification filter, Craig. It makes listening so much more enjoyable!

[@KM6LYW]

Take note! the developers added a "high pass filter" switch after I made this video - great stuff! no pl tone!

[@Spooky2012]

Hello Craig, thank you for that excellent presentation! In Debian 12 "bookworm" I had to use this slightly modified syntax for nc : nc -lup 7355 | play --buffer 100 -t raw -b 16 -e signed -r 48k - -r 16k sinc 0.3k -n 3000 Anyway there is now a "High Pass" option in the "Radio" section of the latest build, that does the same thing for NFM. VE2YHB 73!

[@DarrenMaunu]

I built a portable SDR receiver using SDR++, Nexus 7 tablet, custom designed 3D printed case, 12Ahr of 18650's and RTLSDRv3. The only thing missing from SDR++ is some good noise reduction. Then I would consider SDR++ perfect!

[@KM6LYW]

Fantastic. I would suggest reaching out to the community on SDR++ at github.com. Feature requests, discussions, etc. great stuff.

[@caaande]

Hey this sounds sick! Have you tried any LNAs so far?

[@DarrenMaunu]

@@caaande Haven't tried any LNAs specifically but do use it with a K-180WLA loop antenna. It's nice as I can connect it directly and use the RTLSDRv3 bias T, reducing cables and extra hardware.

[@BamaChad-W4CHD]

Man I love our community. We will build anything and everything lol

[@utisest2842]

As usual, another brilliant solution for the community! Thank You!

[@MartusTube]

I can tell you for a fact that at the time this video was posted, we were not just limited to GQRX on linux. We had SDRAngel, LinRad, CubicSDR, GNURadio, and SDR++, which has had a stable linux build since August 2021.

[@kn6sdo]

Hi there! This is Dylan KN6SDO. I’m a local ham and just ran into your channel. Love the video! Hear you on the W6EK repeater!

[@KM6LYW]

w00t! fellow norcal operator! thanks for watching :)

[@johnfloy]

CubicSDR is fantastic as well, even has rig control to control your radio

[@jeff-73]

Great vid! Have to check this app out. Kudos to the hard working DEV in touch with the users.

[@Spasmomen]

Now someone needs to code this into SDR++ :) (please)

[@craig9309]

They did! click [x] high pass filter. PL be gone!

[@JCO2002]

Great. For those who run Linux and are considering buying an RTL-SDR V4, the Debian terminal commands on the SDR++ website take care of the necessary drivers for Mint. V4 is much better than V3 on HF because of the up-converter. Now, if I can just get rid of all the spikes across HF from the SPS on my desktop... As is, it's only clean by using it on my Mint laptop with the desktop turned off. Running it on battery, not the charger, also lowers the noise floor quite a bit,

[@SomeTechGuy666]

Does it get better if you run it using a long USB B extension cable, moving it away from the computer ? Should be pretty easy to put a noise filter on the +5VDC USB wire as well.

[@JCO2002]

@@SomeTechGuy666 Tried that with a 2m cable. No help. It has to be right outside. Got a 6m cable a few days ago, which will allow me to put the dongle itself outside on the concrete roof of the house I rent here in Jamaica. Have to make a little waterproof enclosure for it. Experimented with my laptop, and I'm fairly sure that will take care of the SPS problem with the desktop. Certainly hope so.

[@sacsmitty]

Craig, just discovered your channel and love it. Keep up the good work. 73, Smitty (WB1G)

[@KM6LYW]

Hey Smitty! W6EK ARC represented!!!!

[@jimburns1448]

Thanks!

[@sethalump]

TIL that you can stream audio out of these clients. My head tilted when I saw netcat being used. Cool hack

[@gorak9000]

The RTLSDR wasn't the radio that started it all. The USRP and GNU Radio was out for years before RTLSDR was a thing, it's just that the USRP was very expensive. RTLSDR was the first super cheap SDR that was widely available, with the limitation that it's only 2MHz bandwidth, which for audio is fine, but makes it rather useless for many things. And it's not like the USRP or GNU Radio was the first software defined radio either - GNU Radio was the first open source SDR framework (I believe).

[@Martinroadsguy]

So you're saying it wasn't the one that started it all, but it was the first one that was popular and accessable. Got it.

[@ferrumignis]

@@Martinroadsguy What started the popularity was the availability of very cheap DVB-T dongles that could be hacked for use a general SDR, with some limitations.

[@hallkbrdz]

Pretty slick solution for low cost hardware.

[@stevehageman6785]

Good job getting rid of the PL tone! :-)

[@craig9309]

just to follow up, the developers immediately implemented a "high filter" checkbox that kills the PL tone within the app! --- great work!

[@ve3cwq47]

I recently installed SDR++ on a Raspberry Pi 4, using the RTL-SDR V4 and I'm running into a strange problem. The frequencies are shifted totally off. I'm trying to tune the 6m band and I'm receiving broadcast FM in the 95 kilohertz range instead. How can it be that far off?

[@BamaChad-W4CHD]

Are you familiar with how to change your ppm? All sdr dongles are off frequency from the factory and need a adjustment. For example my first one and most used always has to be set to plus 55 ppm. That's it's sweet spot.

[@BamaChad-W4CHD]

Like you said though. That's a huge frequency offset. Odd indeed

[@BamaChad-W4CHD]

. Like 50mhz off. Never seen one that bad.

[@princearthur4946]

Excellent presentation! Excellent videos!

[@asuskkj]

how do we decode dsd, m17 protocol in sdrangel in windows? voice breaks and i cant understand hardly any word

[@jazzrat2000]

Real beginner here I can't seem to find any software that will install on my windows 11. I have the dongle with the antenna and so on but no instructions

[@jtc1947]

This sounds very interesting! I have THOUGHT about getting into LISTENING to HAM broadcasts but the cost of the equipment was WAY beyond my reach and then I can NOT stand "static"!! Maybe this is a way around both obstacles??

[@youtubeaccount931]

SDR++ allowed me to ditch windows basically lol, really been digging it. Haven't figured out how plugins work, or whatever they are calling them, but haven't spent much time on it either. From what I can tell the default install is missing some modules that are available.

[@otakarmalasek4585]

Please help.How did you write the path in terminal ~/ham/plfilter ( I use,rtl-sdr,linux,gqrx) Thanks

[@CD6GLL]

Wich is better for Mac? Greetings from Chile

[@tomdonahoe3539]

SDR++ is one of the better applications for thr RTL-SDR. Unfortunately, it has dependencies in LINUX that conflict with Wine. You can't run both on the same computer 😢. 73.

[@tlebryk]

Doesnt sdr++ have a usable "auto notch"? SDR Console does and I think SDR#, too.

[@AC9DJ]

Was all set to run SDR++ on my Mac but I have an M1 machine and SDR++ only runs on Intel chips apparently.

[@OhYeah-qx9qn]

I'm waiting for the arm version as well

[@that_kai_person]

Heyo! I've been searching forever for a way to use my Raspberry Pi 3B+ as a transceiver, problem is most RTL SDRs are like 5W, and won't get me any contacts. Do you have any recommendations for SDRs for the Pi that you can set up to transmit like an actual transceiver? Thanks for any help in advance :D

[@KM4ACK]

Great tip!

[@thuff3207]

Thank you and that was an interesting filter. It appears to be a subtraction and a bit like a brick wall. I thank i heard something with it on.

[@karliistda7227]

Hi to all, I installed sdrpp_ubuntu_jammy_amd64.deb in my linux-mint21. when start SDR++ in the Source pulldown I cannot see RTL-SDR !! I have no idea what to do; please help, Thanks a lot, Karl

[@kevinc9416]

Great info!! Two questions I am having trouble getting answered. 1. I am installing a Teyes CC3 head unit in my Truck. Is anyone running SDR software on the android units? Or have done it? 2. What upgraded antenna for this unit?

[@hawkeyeCH53E]

Android APP called SDRTouch. My standard base station vertical works great Comet CH-250. Not sure what a good all-band mobile antenna would be?

[@Ovrlordz]

Are you running this on a Rasberry Pi?, Which one? What os is on the computer used? Also, Is your frequency set by the antenna you have attached, or is it running off the dongle you bought?

[@KM6LYW]

Running on Ubuntu Linux PC. rtl-sdr dongle (silver one)

[@erickrauss4006]

gotta love linux and a Little bit of bash script.

[@briangohl2547]

Excellent tip on filtering the PL / CTCSS tone! Tnx! de AI6US

[@KM6LYW]

thanks for the voice-over work on this video Brian!

[@johnsonstechworld]

I have always been wanting to try out an SDR. But the different types and versions available online makes it difficult to choose, especially as I am not very confident about the sources and lack of experience with SDR. 73 de Jon, VU2JO.

[@californiakayaker]

fILTERIG THE TONE ? I'd just run it through that comspec decoder you have laying around...

[@jjenner2452]

thanks for the tip!

[@Rockn-UV]

What command box did you use? Is it part of the SDR++ software? Thanks.

[@KM6LYW]

its a linux shell

[@mxcollin95]

@@KM6LYWso could you drop that same command line in a windows power shell and get the same results if you were running sdr++ on windows?

[@KM6LYW]

@@mxcollin95 No, I don't think so, you'd need the sox toolset, etc.

[@WG7D]

Interesting! Thanks, Subscribed. 73,WG7D

[@jamesalles139]

yes, Linux on an old box (I hope)

[@craig9309]

New Linux box!

[@MoJo9919]

I like for you to talk slower as with hearing problems I could not understand most of what you said , it would also help other people , thanks

[@KM6LYW]

I'll try, but i'm trying to get these down to 10 minutes. I noticed the youtube closed-captions work rather well, give those a try too?

[@wirelessdj]

KZbin has the ability to play videos at slower speed.

[@MoJo9919]

@@wirelessdj yes KZbin do but they have taken away the 25§ and have 75 which is too slow , thanks for the info

[@scottwilson9817]

Get you a trevolo speaker ai

[@NeatFreq]

STP!!!!!

[@KM6LYW]

🤟

[@РусланДавлетханов-ч5к]

Smith William Wilson Mary Johnson Margaret

[@PopeyeKF4LBG]

Thank you! 73 de KF4LBG

[@nascyber]

Tq for share.. 9w2nkm 73👌