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Straight keys are popular with some hams, but not everyone enjoys them. And not everyone can send good Morse code with a straight key. A better option is a simple sideswiper key (also known as a Cootie.) The motion required is short, very repeatable, and easy to learn.
Add an electronic keyer and you have a sweet way to send code with good rhythm, which teaches good habits, and enables picking up speed quickly. This video details how to build an economical electronic keyer that will send properly-formed dits and dahs from 5 words per minute to more than 35 words per minute.
C W Morse paddles and keys: cwmorse.us/
Picaxe microcontrollers: picaxe.com/
Tallahassee Amateur Radio Society December 2012 newsletter: k4tlh.net/wp-co...