88-109MHz Tropo - Video & Data
Simon Brown • March 25, 2020
Great conditions, here's a video and the data
Here's a two minute video from the opening of March 25th, 2020. Recorded with an ELAD S3, 8 element Yagi.
And here's the IQ data
which you can replay in SDR Console - approx. 12GB [link].
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
