https://kk4vcz.com/ Recent content on KK4VCZ Hugo -- gohugo.io en-us Sun, 27 Sep 2020 11:00:32 -0400 https://kk4vcz.com/posts/th-d74-android/ Sun, 27 Sep 2020 11:00:32 -0400 https://kk4vcz.com/posts/th-d74-android/ Recently I’ve been writing a programming tool for Kenwood ham radios for Java and Android, one which happily programs my favorite four hundred channels over RS232, TCP, and Bluetooth; in this friendly article, I’ll tell you a little bit about how to write your own. https://kk4vcz.com/posts/th-d74-firmware/ Sat, 11 Jul 2020 11:00:32 -0400 https://kk4vcz.com/posts/th-d74-firmware/ These are my notes loading and decompiling the Kenwood TH-D74 firmware, which Hash (@BitBangingBytes) managed to dump the BGA Flash ROM of a damaged radio. https://kk4vcz.com/posts/wsjtx-pulseaudio/ Sat, 23 May 2020 01:00:32 -0400 https://kk4vcz.com/posts/wsjtx-pulseaudio/ Lately I’ve been playing around with WSJT-X at my home station on twenty meters, trying to make contact with KM4BBD and a few other fine folks across North America. https://kk4vcz.com/posts/xastir-bulletin/ Sun, 19 Apr 2020 15:03:26 -0400 https://kk4vcz.com/posts/xastir-bulletin/ The following are some quick notes on how to transmit APRS bulletins through Xastir, scripted by its handy xastir_udp_client tool. https://kk4vcz.com/md380tools/ Sat, 18 Apr 2020 11:00:32 -0400 https://kk4vcz.com/md380tools/ Back in 2015, I found a null pointer read vulnerability in the Tytera MD380, which is a fancy way to say that I could dump out the bootloader that decrypts the rest of the encrypted firmware update, and by patching that, get a clear copy of the firmware running the radio. https://kk4vcz.com/goodwatch/ Fri, 17 Apr 2020 11:00:32 -0400 https://kk4vcz.com/goodwatch/ The GoodWatch is my replacement circuit board for Casio’s modern calculator watches, adding support for 70cm and 33cm amateur bands while retaining three years of battery life and most of the watch’s features. https://kk4vcz.com/archives/ Tue, 28 May 2019 00:00:00 +0000 https://kk4vcz.com/archives/ https://kk4vcz.com/about/ Mon, 01 Jan 0001 00:00:00 +0000 https://kk4vcz.com/about/ Howdy y’all, This is a little page for my amateur radio projects, most of which are documented in better detail at Github.