2026 Frikkin Lasers Contest: Glow Engine is like an Open Air Slow Scan CRT

Slow-scan CRTs were never exactly common compared to their faster cousins, but given the popularity of Slow Scan TV (SSTV) amongst hams and NASA broadcasts, many of you are probably familiar with them. The slow scan rate of SSTV meant it required much less bandwidth, but in the early days you needed a CRT with a long-persistence phosphor to hold onto the image. [AJRussell]’s Glow Engine works much the same , with one key difference — instead of cathode rays, he’s using a frikkin laser beam.