El Cheapo Modules: 6GHz Digital Attenuator - November 2021
This new digitally-programmable module can attenuate signals from 1MHz to 6GHz by 0 to 31.75dB in 0.25dB steps. You control it using five small pushbutton switches, while a tiny OLED screen shows the current setting. by Jim Rowe
Source: siliconchip.com.au