On the Subject of Complicated Code

This antiquated form of naval communication isn’t like the others. Sometimes it alternates colours, that makes it completely different. At least it’s genuine Morse code. Maybe too genuine...

  1. Interpret the signal from the flashing light using the Morse Code chart to identify the word being spelled.
  2. The signal will loop, with a long pause between repeats.
  3. For each signal, use the Venn diagram below to decide whether or not to press the transmit (TX) button.
  4. If no transmissions can be made, take N to be the sum of the numeric serial number digits modulo 6, plus one.
    Transmit the Nth lowest frequency.
T F Z I B P X I T O I P O I O P T I B Z P T F B X I P O F T Z I B Z P F X T O Z T X O P I B F X O F I O Z T F P B O I X B X O F Z T Z T I F X B P O F X Z B P O B I F O T F P Z B Z P I X T P B Z F P I Z F O X T O B I T P B X Z F T P I X B Z B F I P O F Z X
The transmitted word belongs to the list below
The light flashes blue
The light flashes red
The transmitted word contains any letter of the serial number
The last digit of the serial number appears after the decimal point of the frequency
The frequency is a multiple of 3 KHz
The transmitted word is five letters long
acquitapplyaztecbistrocorkydraugr
forgetfuzzyinchesinjectjoustkiosk
knightloversnoughtplayerquincerustic
shroudsixtysquidstormyswordtennis
tuxedovectorwhosewizardyardzenith
TTransmit the signal
XDo not transmit the signal
FTransmit the signal if the first numeric digit of the serial number is odd
PTransmit the signal if there is a PS/2 port
BTransmit the signal if there is an odd number of batteries
OTransmit the signal if there is a lit indicator
ITransmit the signal if an indicator label contains the last letter of the transmitted word
ZTransmit the signal if its frequency is a multiple of 5 KHz

How to Interpret

  1. A short flash represents a dot.
  2. A long flash represents a dash.
  3. There is a long gap between letters.
  4. There is a very long gap before the word repeats.