Cool things to do with SDR

I built a Class D AM transmitter with mostly recycled parts based on what I learned when I wrote the previous post.

Years ago I learned about a type of AM transmitter (more like RF stage) called Class D that is really efficient and flexible.

Recently I was compressing the assets I scraped from a now-deleted Discord server and was able to save almost 600 MiB by having 7-zip sort by file type (the default behavior is to sort by filename) in addition to a few other options.

In 2011 my family got a Garmin GPS and a few years later I found it fascinating when I heard that it could get traffic data from FM radio.

In my last post I explained that I couldn't transmit continuous QPSK from my Raspberry Pi 3B because the single-threaded RRC function couldn't keep up with the transmitter.

Over the weekend, the owner of a Discord server called The Hive Mind ran a "hackerthon" during which members were supposed to build something and show pictures on Sunday.

Tonight I tried to put music on my RCA M6204-B MP3 player but when I tried to play it, it said the music section was empty.

Recently I became interested in growing grain so I decided to buy 3 types of grain seed on Amazon and try them out.

There's a lot of hype surrounding Windows 10 right now and I'm not sure why.

I noticed an article that says that YouTube has added support for the AV1 codec.

Recently I've become interested in developing for Blackberry 10.

I've been looking for a way to mount 7-Zip archives as virtual drives, similar to how IMDisk works with uncompressed disk images.

I released some UTSC packets for people to try and decode, to see if my format could be followed by other people.

I was an early bird purchaser of the LimeSDR Mini, and I acquired a pair for $99 each.

I've been looking for ways to use PGP in Java programs and the Bouncy Castle API seems to be the most common method.

Tonight I enlisted the help of an associate in Texas, Tech2025 (aka RFShibe) with transmitting a dummy UTSC signal.

The goal of UTSC is to provide a digital TV standard that operates as much like analog TV as possible.

A few days ago (May 3) I saw some colored tubes sticking out of the ground at the corner of the local post office.

I finalized this in 2017 but forgot to release it.

The main focus of my UTSC standard is reliability so I needed a way to test how it responds to bit errors.

Yesterday my 2 LimeSDR Mini's arrived.

Last night I heard a looping recorded message jamming AM transmissions on 80 meters.

Today I got the RTL-AMR tool working and monitored some power meters.

Now we need to write the data for the first 32x32 block.

Now it's time to create the actual image data.