Bench press CW key
Based on idea suggested by SM4FQW
Gain huge muscles while sending morse code with this CW key.
Keying contacts were made as follows. First a piece of aluminium sheet was insulated and attached to barbell rack using duct tape. There is a screw for keying wire connection.
Another keying wire was put under an oversized hose clamp which was then bended like this.
Heavy weight telegraphy demonstration:
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