Radio Experiments.

Collecting more data than needed with HF-SDR.

Observing the HF bands during contests can reveal some very interesting statistics about overall propagation spectrum usage, and especially ...

I've always thought that SDR had good promise for visuals and demonstrating the fun side of Amateur Radio today.  I put together a quick...

Improved network bandwidth usage by using loss-less compression for both data and audio streams. Audio streaming compression using AAC is i...

I used this method for replacing LCD backlight bulbs on the Icom IC-725.  The LCD backlighting is provided by 3 x miniature 12V bulbs (not L...

To demonstrate the ability to run multiple tuners at once, I configured the server to run 3 x tuners concurrently. The www view demonstrates...

After many performance experiments (server vs. browser) the SDR processing still lives on the server. I have uploaded about 7 mins of 96KHz...

The WWW-SDR now supports sdr rx functionality with tune/demod/filter. This view above demonstrates the ability to run multiple inde...

Around 0630Z, 20m was open to Japan. Here you can see the clear trace from SSTV tx from JA2GZZ on 14.233MHz. SDR functionality is now...

Project notes here: Added audio streaming to the www client.  Also more UI features such as display pan/zoom and controls for pause/mute...