sdr

  1. Airspy & Spyverter Combo [SOLD]

    Airspy & Spyverter Combo [SOLD]

    Airspy & Spyverter combo w/ included accessories. Purchased April, 2016 from AIRSPY.US. PCB silkscreen dated 16 Aug. 2015 and I don’t believe it is the current hardware revision. Firmware was keep current with GitHub (v1.0.0 rc10). Works well with SDR#1700. Several months later I purchased a...
  2. K

    SDR - Universal Trunker + DSD - AFRN

    As of today (June 28, 2019), I am finding that most local municipalities have moved to AFRN. On the old JeffCo Pub Services P25 system, I have no problem with my set up. I usually monitor 855.6875 for the control channel in unitrunker, and I route the output from to DSD+ for decoding the audio...
  3. SpectralContent

    Trying to Monitor 160mHz railroad band - Issues with constant static/ no reception

    Just started to really get into SDR over the past couple of weeks and wanted to try to monitor local railroads to see how SDR compared to my traditional setup of a Kenwood TK-780 with a 160mhz tuned 3db gain antenna. I attached an identical antenna up to an RTL-SDR stick with the intent of using...
  4. J

    SDRTrunk JMBE Build HELP!

    Hi, This is my first post on this form. I'm trying to get back into SDRs again but SDRTrunk is kicking my butt. I need some help building the JMBE.jar file. I'm following these instructions DSheirer/jmbe but every time I run the build command I get this: BUILD FAILED in 44s 5 actionable...
  5. RFI-EMI-GUY

    ETTUS RESEARCH USRP B200: Exploring the Wireless World

    I thought this video was pretty interesting because it shows the many way SDR can be utilized. I am planning to experiment in SDR in near future and have not yet decided the HW platform. So I am just throwing this out.
  6. G

    New to Scanning looking for advice.

    I'm looking to get back into scanning, I currently live in the Chicago Uptown area and was wondering what kind of equipment I might need. I would like to listen to Police/Fire as well as Marine and Air. I'm currently using SDR for police but having a hard time figuring out fire and air and was...
  7. Charlie1068

    Baofeng Baofeng RD-5R DMR TDMA Help

    I recently purchased a RD-5R and can program DMR no problem, but some of the frequencies I can receive in DSD Plus are TDMA. I can receive them fine on DSD, but then I program the frequencies, Color Code and Talk groups. I can't pick up any of there chatter, I have retraced my steps to make sure...
  8. R

    HackRF One - Transmit without SDR Angel on Windows 10?

    Hello all, I'm new here and to SDR in general so I apologize in advance for any mistakes or incorrect terminology. I was wondering if anyone knows of any software other than SDR Angel that has transmit capability for the HackRF One. SDR Angel works, although it's rare and very inconsistent...
  9. K

    Looking for SDR that...

    Hey RR, I bought an SDR recently and the SDR and the antennas were complete junk. The SDR worked the same with or without the antenna. It was the NooElec RTL2832U. I am looking for an affordable SDR that can run 24/7/364, it just needs to stay on one frequency(UHF Part-90 frequency). Another...
  10. Chibson

    SDR Dongle Broken?

    So I recently purchased a Nooelec E4000 on Amazon and got it in the mail today. When I got it working with SDR Sharp I keep getting this on the waterfall display. I have tried everything to get rid of this. Not only is this constantly on the waterfall display wherever I frequency I go but now I...
  11. S

    SDR HT Transceiver?

    Are there any SDR based HT's transceivers available yet on the market? Not talking about a cobbled together raspberry pi / DIY type but a polished consumer ready out of the box solution. SDR is making its way into base station units like Yaesu FT-DX101D as well as HT and mobile scanners like the...
  12. E

    Modify/Revive old RTL stick (part 1)

    Modify/Revive old RTL stick I bought 2 of these inexpensive RTL sticks for just over $12 each almost 3 years ago. IEIK SDRICE RTL-SDR FM DAB DVB-T USB Stick Set with RTL2832U & R820T Great SDR for SDR# ADS-B Receiver Set Radio Compatible ICE Input...
  13. M105

    772 Mhz Moxon antenna project.

    I was introduced to the Moxon antenna at an amateur radio club recently. Since I had been looking around for an easy to build directional antenna to monitor the local 770 MHz P25 system I decided to run the numbers for 772Mhz and see how big the antenna would be. It turned out to be small...
  14. P

    RFI Identification on SDR

    I have attached 3 images of my RFI problem Image 1: Shows the RFI morphing into the alternating signal. This happens every 2.5 min and starts from a constant signal to a stronger signal for 5 sec then into the alternating signal for 5 sec. Image 2: shows spacing of RFI Image 3: What my...
  15. V

    SDR for NXDN/Brodcast

    I have a SDR that I would like to use to broadcast a system that is NXDN. I have yet to find a way to decrypt NXDN and broadcast it to the internet. Does anyone have any suggestions? Also if you know, can I have more then one feed broadcasting from the same computer at the sometime?
  16. I

    Open Hardware devices for cheap SDR receivers

    Good day! For a while, I worked on creating completely open hardware solutions (such as Antenna Mini-Whip, HF Upconverter, and etc.) used to expand capabilities and work with low-cost SDR receivers (RTL2832U). At the moment, all devices publicly available on GitHub. You can get acquainted with...
  17. T

    DSR and DSD Plus - Just want to listen to one target

    I can't seem to find anything regarding a setting in DSD+ to only listen to one target (talk group). Is there such a thing or is this a different plugin that has to be used?
  18. E

    Sdr & dsd+ dmr

    Hello everyone, I would like to monitor my DMR Mototrbo system that has built-in privacy settings, I have managed to monitor but I can not enter my privacy code to listen to the network traffic. Is there any way to do it using the command line ?. Thank you very much. Greetings.
  19. J

    Searchable apps and support catalogue for SDRplay

    Over the last year or two, SDRplay and others have generated a lot of applications material in the form of documents, articles and videos – these are designed to make it easy to get up and running with RSP receivers from SDRplay. Attempts to use the YouTube playlist system to catalogue videos...
  20. N

    am I recording LTE uplink signals?

    I have this app, LTE Discovery, in my phone which tells me the LTE UL frequency and power so I went with my SDR and measured the received signal at that frequency and it matched. Now, how can I be sure this is the transmitted signal from my phone? As I made a call to and from this phone and...
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