У вашего броузера проблема в совместимости с HTML5
This is the German Junker D.B.G.M. telegraph straight key in action, sending a few lines from "Kubla Khan". The keying gap is set at less than 0.002". Spring force is about 7-oz. I'm using the so-called Euro (arm-off-table) style. My fist is a little sluggish here. Sidetone is provided by an Elecraft K2 Transceiver (the sound quality of this clip does not do it justice). Video was shot on a Canon Powershot A75 digicam at 160x120 resolution. If you are interested in straight key telegraphy, go to http://www.skccgroup.com