Comparing SOS -LRB- di-di-di-dah-dah-dah-di-di-dit -RRB- with the older CQD -LRB- dah-di-dah-dit dah-dah-di-dah dah-di-dit -RRB- -LRB- -- · -- · / -- -- · -- / -- · · -RRB- it is obvious how much simpler the new code was .

SOS -LRB- · · · -- -- -- · · · -RRB- is a Morse code . Comparing SOS -LRB- di-di-di-dah-dah-dah-di-di-dit -RRB- with the older CQD -LRB- dah-di-dah-dit dah-dah-di-dah dah-di-dit -RRB- -LRB- -- · -- · / -- -- · -- / -- · · -RRB- it is obvious how much simpler the new code is .
