As a Communication Engineer for past 23 years, I shall say the Morse is still considered the most effective and simple way of communication. One can transmit code with few parts, including a power source, like you car battery (All hand held HAM equipments use 12-Volt). I have passed the code and have General-Class FCC License. If I recall correctly, the ARRL transmits code on certain days and on certain frequency for educational purpose and to assist start learning the topic. If you ever got lost, just remove the spark-plug wire from one of the cylinder of you car and start your car. Due to jamming effect, you can be located in short time. This is similar to code, but much broader frequency.

I hope I have been helpful.

More topics are available at arrl.org website
Vahid