<CootieMaster> wrote: Looking at your video in slow motion, I'm still not clear what the purpose is of the sliding weights on the bar. Do they adjust the inertial resistance of the paddles while you send, or what?

The key is a semiautomatic (bug) key that is especially out of where it was developed during WWII by Russian Radiotelegraphists who had the Russian Electric manufacturer modify Vibroplex as Speed-X keys by adding what I call a "cootie dasher" - dots are made by the pendulum with the weight being adjusted by moving the sliding weights you mention. Since the vibrator is fixed at the rear, moving the weights towards the user of the key slows down the key to about 18 WPM.

On Tue, Feb 28, 2023 at 11:05 AM D.J.J. Ring, Jr. <n1ea@arrl.net> wrote:

Try the video again.

DR

On Tue, Feb 28, 2023, 00:53 D.J.J. Ring, Jr. <n1ea@arrl.net> wrote:
A video to show it works, I don't know the key yet, I'm learning.

73
DR