Last summer was a chance for me and my family to do some water activities in the area. Snorkeling was a big favorite for my son. One of the locations had a fresh stock of fish that drew our attention. Unfortunately, the water in the lake grew cloudy due to our movement and it was a challenge to see. On a follow up visit, we brought one of my 808-16 video cameras. It’s a 720p camera and I wasn’t too…
Ok, I’m going to trying to do a dictation of my new blog entry using this software called VOSK. V O S K. Anyway, it’s been eighteen months since I’ve done an entry and a lot has been going on. I’ve done a few things with IoT devices. I’ve been replacing the factory shipped firmware on these IoT devices with Espurna and Tasmota. This has involved opening up factory sealed devices and making physical changes to allow reprogramming. I have…
The SDR hardware sold online usually includes an antenna. These antenna are not suitable to pickup radio transmissions that are low powered or distant. Here is an example of NOAA weather radio that is transmitted about 15 miles from my location. This first image is with the standard antenna shipped with the SDR adapter. The signal noise ratio is narrow, meaning the noise floor is high and the signal ceiling is low. The audio is noisy and hard to hear….