Thanks. Good luck, and let us know your results. Hi, yes that is expected. Save my name, email, and website in this browser for the next time I comment. I think I am going to give up though. Although when I first started DSD, a quick burst of unknown something showed on the screen. When I use SDR Sharp with my dongle to use as a regular scanner, I use the default sound card on my laptop and I hear everything I want. Usually turning off the audio filter and reducing the filter bandwidth seems to help for me, but it’s hard to be sure. The APCO P25 Decoder then appears fully integrated within the receiver front panel: Those systems are pretty much all gone these days and rarely encountered due to the ease of being overcome. I read the tutorial and watched a video on Youtube but I’m not clear on the installation of VB-Cable in Windows 10. If i set DSD with option -w to set a wave-file, that wave file will work fine. It would be so nice if there was just a single download to make this work. DSD will listen to the default windows sound recording device. I’m thinking of using scanner/dsd to obtain the data so I can then program my digital handheld directly via its software…I hope that wasnt a dumb question and I aplologise in advance if this is the wrong way to ask your advice” It’s one single channel. So please don’t complicate all the information. I have followed all of the instructions to decode DMR and all I am hearing is this constant tone when I click “Play”. I still do not understand … DSD isn’t a DOS command so “dsd -i /dev/dsp -o /dev/dsp -fd” won’t work, you will get an error. Finally start dsdplus using the -o parameter (e.g. You can also subscribe without commenting. Motorola SRX 2200 Model 3. I would like to see the NAC code displayed if possible. To show decoded LRRP coordinates on a map when using DSD+, simply open LRRP.exe. The RTL-SDR can be used as a wide band radio scanner. What do i need to do so the program can see the RTL ? Using a laptop and VB-Cable and the software decodes well. Here YouTube use Superphish uses the RTL-SDR to decode D-STAR conversations using DSD 1.7, HDSDR and virtual audio cable. After that it worked a treat. To install the plugin, simply … YouTube user Geoff Wolf shows a video where he uses RTL-SDR as a police scanner to listen to public safety P25 digital radio using DSD, SDRSharp and virtual audio cable. I’ve asked around a lot as well but have always gotten a ” no it can’t happen ” answer everywhere. Researchers at Fox-IT have developed a technique for cracking AES-256 encryption without the key and from up to a meter away. Assuming Windows 7 or 8, go to the control panel and open “Sound”. DSD is essentially experimental software that is still under heavy development, so they are probably not focusing on creating simple user interfaces at the moment. Decrypt P25 Radio. I have followed all the instructions that I can find on the internet and still cannot get this to decode for me. If the P25 signal is encrypted, you will hear garbled unintelligible voice. The type of encryption to use depends on the type of information you’re protecting. But no correlation is found in my synchronization , and no peak is detected. All my settings are correct as far as my soundcard settings, etc. I’m listening to DB0NJ and DB0TVM repeaters with strong signals. The plugin should work with any SDR supported by SDR#, including the RTL-SDR. Signal is strong (only 11 miles from the tower), volumes are set correctly and all else is set fine. The Police Departs have just about all gone over to the new 700 mhz AES encrypted truncated voice transmission. The software DSD+ they recommend doesn’t work either. Still nothing. I have no software background experience which I am sure is my problem. “The data that is displayed when dsd is receiving a signal, does this contain colour codes, groups etc ? Click the Playback tab and choose a device other than the virtual audio cable as the default playback device. DSD is the program name, not a DOS command. This will use the default sound device set in Windows sound recording properties. Hi, It looks as though just yesterday cygwin was updated and split into a 32-bit version and a 64-bit version. Notify me of followup comments via e-mail. Thank you for your help anyway. Digital doesn’t work work with SDR#. 73. Also, the decoded voice audio will be pumped back into DSD causing a detrimental feedback loop. Also found voice meter (does the same thing). The use of encryption systems is widely … How can I get a screen shot to you? by daryl in Interoperability, Public-Safety Radio, Technology in Government . Is that a normal thing. But what should I do / set? Using Windows 7. Can anyone explain it to me step by step? The RTL-SDR is an ultra cheap software defined radio based on DVB-T TV tuners with RTL2832U chips. 3) Ask more people on the Reddit RTLSDR board, or the radio reference digital decoding forum http://forums.radioreference.com/digital-voice-decoding-software/. Now start DSD on the computer and you should be good to go. I know I have VAC installed correctly, am tuned to a known P25 frequency with a strong signal, but it’s almost like VAC doesn’t hear anything so no scrolling or decoding happens. To use DSD 1.7 for D-STAR: Navigate to the folder where you unzipped your DSD files. SDRsharp SDR v1.0.0.1317 I will probably just leave everything like it was when I installed it. It's discussed in this forum. EDIT: Also, you didn’t mention anything about making sure that VAC is your default sound device. But if i run it thru SDR# and THEN to DSD, it appears that DSD can’t read the stuff, because nothing happens at all. [IMG]http://i.imgur.com/qzx6bb9.jpg[/IMG]. Police and firefighters know where these weak areas or dead spots are in their communities. There are a bunch of tutorials on Google showing how to enable it. 4. Try running the .bat files (I think it was the install one) again and after that, try re-installing the drivers on the dongle with Zadig. Note that many LRRP radio users use a third party GPS software system which cannot be decoded by DSD+. The Hobbyist’s Guide to the RTL-SDR: Really Cheap Software Defined radio. I’m getting a “Error – The system cannot find the file specified” when I try to start DSD To get good decodes (for most sound cards), the volume settings in SDRSharp and Windows should be played with until decoding begins to improve. Some Motorola radio broadcast GPS coordinates every few minutes or on request. One RTL-SDR/USB example: “TG=36” “Ch=3”, I have a voice clear at right, and nothing on the left. May I ask a quick question on dsd please ?… Cygwin virus ridden as torjans Win32/Heur & Win32/DH discovered after scans hidden in compressed download & exe file from mirror during installation. The plugin does not support trunking or any advanced talk group filtering features that you might find with DSD+, Unitrunker, SDR Trunk etc. Please be careful of mirrors during installation. Maybe increase my band with from 25000 to a higher band with? While this tutorial is aimed at the RTL-SDR, other software radios such as the Funcube dongle, Airspy, HackRF and BladeRF will also work. You can set these values using either a .BAT file to start from the desktop or set them in the config screen of the sdr# plugin. I can’t find anything on how to set it as the default recording device. Go to my Signal Identification Guide page linked up the top, and try test DSD on the example P25 and DMR audio examples. I didn’t use cgywin because I read that I didn’t need to download it for DSD+ APCO P25 Decoder Plug-in for WR-G305 Series Receivers This APCO P25 Decoder Plug-in makes it possible to receive and listen to digital APCO P25 channels on WiNRADiO WR-G305 Series receivers. P25 was developed by public safety professionals in North America and has gained acceptance for public safety, security, public service, and commercial applications worldwide. Hmmmm the last troubleshooting things I can think of are to 1) double check volume settings for VAC/stereo mix are set loud enough, 2) Download a free audio editor like Audacity and set the record input to VAC/stereo mix and see what audio is actually being piped through. Software system which can not yet decode D-STAR conversations using DSD 1.7 poorer. Mentioned, except, stereo test mentioned by admin works garbled unintelligible voice and! Ease of being overcome tracking a fleet of vehicles for instance as torjans Win32/Heur & discovered! 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