Bob Skala of Interactive Instruments spoke with us about very large servo motors, wind tunnels, and staying current in tech. 

Hydraulic Press YouTube channel (and our favorite video)

The Wright Brothers by David McCullough

Other good tech podcasts included The Amp Hour and HamRadio 360 WorkBench

Chris talked about getting into WSPR in 197: Smell the Transistor but we first talked about it in 76: Entropy is For Wimps. The new WSPR mode he mentioned is called FT8 (google it).

And a note from Bob:

Below is a link to a type of servo system that tries to simplify the interface to be more like a stepper.  It integrates the driver and motor into a single package so you can treat it like a stepper with digital step and direction or serial commands.  You get the smoothness, speed, accuracy and low power (when idle) of a servo but the servo motor, driver, and cabling are integrated into one magic box.  You add a DC supply and simple control signals and you are all set.  They came out with this to replace stepper motors.  I haven’t used one yet but I hope to at some point.

https://www.teknic.com/products/clearpath-brushless-dc-servo-motors/