How to use Morse Code Keys – Demonstration by 10 year old
Emilia giving an excellent demonstration about how to use Morse Code Keys.
In particular she shows us how to use three keys, a STAMPFL key made in Switzerland, a Bulgarian Army Key, and Italian Begali key.
At the end of this video, Emilia also explains main features of her Magnetic Loop Antenna.
More links ?
Long list of morse code keys manufacturers