stumbling start on timed mute for Brewers broadcasts
The previous mention of the idea (timed Clapper): https://wb9kzy.blogspot.com/2025/07/another-project-idea-new-clapper.html Found this board: It's from the projects page: http://wb9kzy.com/projects.htm Here is the zip: http://wb9kzy.com/muter.zip And the schematic: I added a series diode to the + power input to protect against polarity reversal (also managed to add a short). I also scared up a 4 MHz ceramic resonator from the Island Keyer II kit. This prototype was built on an early Island Keyboard circuit board. The Hamlin relay was put on a right angle daughter board. I also found an old Sony IR remote from a defunct Trinitron, installed the batteries and took it in a dark bathroom with my cell phone to check for IR emission: humans can't see what a cheap camera phone can, IR But the problem: the Muter just doesn't seem to recognize the mute button presses. I did a capture of the decoded IR remote mute press here: First there is a low sy...