SDR Console, Beta Sept. 9th 2025
Simon Brown • September 9, 2025
Hello Again
I'm now back to 90% SDR Console support, so here's the first beta for at least eight months. Scroll to the bottom for a link to the beta kit.
The source is fully archived, so crash dumps can be analysed.
September 4th, 2025
- Added Simple-Radio-Control-Protocol (SRCP) as per JB's Dx Info and tested only with StationList.
SRCP specifies a method to control a radio and get its status back to StationList (or a similiar application). To avoid any headache on user and software writer a very simple method was chosen. Communication is done by sending UDP string messages.
- If there are other logging programs which support SRCP please let me know.
- I have not added support for RDS, only frequency changes.
- After the first message is sent from StationList the protocol is activated.
- This should be documented somewhere in the Settings somewhere, but where?
- What's missing?
August 30th, 2025
- If the RDS Database cannot be opened / created an error is now displayed.
- RDS Logfile window now shows Entry when displaying all fields, see image below.
- RDS Logfile window now supports data sorting by clicking on the column headers.
Radio Data System (RDS) is a communications protocol standard for embedding small amounts of digital information in conventional FM radio broadcasts. RDS standardizes several types of information transmitted, including time, station identification and program information.
August 28th, 2025
- SSB / AM squelch was missing the start and cutting off too soon. Also, the Raised cosine rise/fall was missing. Now, the SSB/AM squelch is more pleasant to listen to. Note: SSB / AM squelch uses voice activity detection, it is not rf-based.
- RDS Logfile display no longer auto-updates if any of:
- Edit window is visible,
- Mouse has been active in the previous five seconds,
- First entry is not visible.
August 23rd, 2025
- Supports Winradio IQ files > 4 GB. These files, like ELAD's do not honour the WAV format correctly, but hey-ho.
- When searching for Airspy HF+ / Discovery / ... SDRs the firmware is now shown in the Options field in the list of SDRs. Also shown in the logfile when connecting to the Airspy.
- Option added to support logging programs when using a transmit up/ down converter definition, as we do with the Pluto on QO-100, see image below.
- Previously FA, FB, ... returned the receive frequency (10 GHz) but on QO-100 we're actually transmitting at 2.4 GHz on the up-link.
- When enabled, the actual transmit frequency (2.4 GHz) is returned.
Mode Mapping page is now Frequency, Mode.
June 28th, 2025
- Scheduled recordings now have an option to shut down the computer when the recording is finished.
- Streaming now compresses the data when the bandwidth is 5MHz or greater.
June 26th, 2025
- Preset recording definitions now include the action to take when the recording finishes, see image below.
- The Stop button in Ribbon bar, Home, Radio now stops the recording playback.
June 25th, 2025
- Left and Right channels in Broadcast-FM swapped over, was reported that they were previously wrong. Please check!
June 22nd, 2025
- Custom layouts now restore the collapsed / expanded state of the Receive and Transmit panes.
June 20th, 2025
- When the Microphone dropdown is opened in the Transmit panel the list of capture devices is re-enumerated and updated, so anything you plug in / out is reflected in the dropdown list without having to restart. Unplugging the microphone you are using is not supported, but you don't do that, right?
- The TX relay can now be connected after starting, it will be opened when the next transmission is made.
June 19th, 2025
- Reworked some MIDI support to reduce / eliminate crashes.
June 18th, 2025
- Pluto updated for wideband transmit - SDR Television
- Fixed SPECTRAN V6 support
- NR3 (rrnoise) updated to version 0.2 Release RNNoise 0.2 · xiph/rnnoise.
Kits
The beta kits are here: https://www.sdr-radio.com/download#Beta
SDR Television Improved phase detection at the start of each frame (SOF, PLS) which in turn improves sensitivity. Sensitivity still not as good as a Serit 4334 NIM as used in the MiniTioune receiver, what's missing is synchronisation timing, I will be using Gardner timing error detection (TED). This will be added in Q1, 2026 when this project is extended for terrestrial use. Downloads are at the bottom of this page.
SDR Television Found and fixed an unused massive memory allocation (up to 10GB), may have caused systems to freeze. Fixed fatal bug in matched filter array allocation. Changed the default transmit bandpass shaping filter roll-off to 0.20 in transmit and receive. Please look at the images below and apply the change. SDR Pluto Now show the AGC gain and RSSI. Added Default link to select the recommended gain - Fast Attack, 0dB visual. Known Problems Add support for tracking transmissions with (?) non-standard PCR data, example is G8GKQ. Using Pluto & variants, sensitivity is not as good as a NIM (hardware tuner). Will compare with SPECTRAN ECO in a week or so.
Unexpected Beta #4 I wasn't planning to release another beta, but there was an error with a download link in the Blog port for Beta #3, also a few worthwhile improvements have been made, so here I go.
Major Change Scroll down to the SDR Radio information. The bandwidths available for SDR Television when using a Pluto / LibreSDR have changed.
BATC Net, May 22nd 2025 Here's a snippet from the British Amateur Television Club net on QO-100. I hope it doesn't scare you.
UI Refresh And More...
After too much grief, I've decided to stop using Wi-Fi to connect the small NUC systems in the computer room to my network: DX Cluster (Ubuntu) SDR Server (Windows) User Forums (Windows) These servers are in constant use, causing the wireless transmitter on my TP-Link AX50 to fail. By switching over to a wired network there's less demand on the wireless transmitter and the whole network has become far more reliable. In future I will only use Wi-fi when there's no alternative. I'm keeping a spare router ready just in case the AX50 fails.
Inside All this equipment is installed in my computer room, next to the office.
SDR Television video from Australia
