Lynovation picked the Teensy 4.1 and Audio Adaptor Board as the basis for their CTR2 (“Control The Radio Too”) Human-Machine Interface for controlling up to 16 ham radios and eight antennae.

CTR2 is a standalone remote touchscreen display, with built-in DSP audio processing, FFT display, a rotary encoder for input, as well as USB audio, mouse, and keyboard support. More information can be found at lynovation.com, or in the ARRL’s September/October 2021 QEX magazine.