Amateur radio, space, technology and other geeky stuff by Alexandru Csete
In October last year I learned about the UT-100 series of DVB-T modulators available from a company in Taiwan. At that time I have already been working with software defined video broadcasting; however, I still found the idea of a small USB-stick modulator very appealing for use with embedded devices. In this post I have collected my notes about setting up and testing the UT-100 modulator on Linux.
Continue reading “Using the UT-100 DVB-T modulator on Linux”
Tonight I had some fun with Fldigi connected to Web SDR. I could actually listen to and decode digital ham radio traffic on the 80 and 40 meter bands without using a radio or antenna.
The way I achieved it was by configuring Fldigi to capture its data using the built-in microphone and turn the volume in Web SDR up until it was sufficient. The result was surprisingly good; of course partly because the Mac has relatively good sound hardware – at least when compared to some standard PC sound chip.
I prepared this video demonstrating how it works. You will hear and see many PSK-31 stations as well as some RTTY and other modes. Enjoy and have fun.
Watch in high resolution.
The Christmas Holidays are just over for me and I have had a chance to work some radio. Unfortunately, I had to work between Christmas and New Years Eve, nevertheless, I managed to do a few QSOs. My main goal was to work on the WARC bands and try some PSK31 with the IC-765.
The FT-817 receiver is great in digital modes too. I find it, however, that normal operation the way I am used to do it, is rather difficult with the important functions hidden behind different menus.