From Pero on hackaday.io:
30 – 6000 MHz synthesizer with power amplifier
For a long time I wanted to crown my work in RFwith a self made synthesizer. I have picked Henrik Forsten’s home made VNA design with MAX2871 as a reference, modified the schematics and routed to my needs. I use Teensy 3.2 for all digital control.
30 – 6000 MHz 10 dBm Transmitter based on MAX2871 synthesizer. Controlled by Teensy 3.2.