Boards and parts have been ordered for the first build of dual-band ARDF transmitters. No doubt some experimentation and modifications will be required in order to get them working, but lessons from the Rev X1 receivers have been applied, so perhaps things will go more smoothly.
PCBs and parts for three of the four Rev X2 transmitter boards were ordered: 1) Digital Interface Module, 2) Dual-Band Transmitter, and 3) Transmitter Power Supply. The Antenna Matching board will be built later.
Parts should arrive early in the new year. Until then I'll be exploring/developing software for the ESP8266 Breakout board to make it into a web server.