On the Subject of Encrypted Morse

We're finishing each others - SANDWICHES!

Read 14 bits, 14 orange ./- -es, and 3 blue letters for a guaranteed solve. Less is not worthwhile.

Sequence A

The binary display

Sequence B

If batteries = ports reverse the first half of the sequence. In practice this means that you use the 3rd character in serial backwards.

Condition Binary
Digit Binary extended to 7 bits
Vowel 1011001
Letter < O 1100010
Otherwise 1000100

Binary decryption

Using the morse message(orange) to look up the column and sequance A,B for the row

Binary digits Received symbol
AB.-
00Space-
01-.
10.-
11.Space

Add the key(blue)s alphabet position (A1Z26) to obtain a final letter. Look this up below. Proceed to the next letter if necessary.

Look up the letters in the table below. The letters at end can be used to verify solutions, but are not required.

LettersResponse
D Etonate PLEASE NO
Dreweae SADFACE
Eessllh SEA SHELLS
Greatjob THANK YOU
Keeptalk NO EXPLODE
Mrmerbee SOUVENIR
Netodate PLEASE NO
LettersResponse
R E Adynow CHEESECAKE
Member SOUVENIR
S Ouvenir I DARE YOU
Hesells SEA SHELLS
T Sloshio I DARE YOU
Kepkale NO EXPLODE
Beagjor THANK YOU
Weredead SADFACE
Ywadrnoe CHEESECAKE

Appendix A: Morse Code and binary conversion

DigitBinary
00000000
10000001
20000010
30000011
40000100
50000101
60000110
70000111
80001000
90001001