This sound effect can be found on BBC Sound Effects Library - Original Series, which was made by Sound Ideas.
This recording replicates a continuous-wave (CW) Morse transmission sent over a medium-pitched audio oscillator. Unlike operational radio traffic, the message conceals a fragment of ordinary English by transmitting the text in reverse before encoding it into Morse code. As a result, the decoded output appears nonsensical until its letter order is reversed. The individual groups can be interpreted as follows:
- GLORYOF: The reversed ending of the phrase "OF YROLG", indicating that the transmission begins partway through a longer English sentence. The group itself does not represent a procedural signal.
- TALESTOMEYTILIBIDERC: A long reversed text fragment corresponding to part of an ordinary English sentence. Several letters appear to have been corrupted during transcription, but the overall structure clearly resembles reversed prose rather than encrypted code.
- CISAB: The reversed spelling of "BASIC."
- SDNEL: The reversed spelling of "LENDS."
- OOT: The reversed spelling of "TOO."
- SIHT: The reversed spelling of "THIS."
- T: A standalone letter, preserved as part of the reversed sentence.
- UB: The reversed spelling of "BU." This is almost certainly part of the word "BUT," with the final letter omitted by the recording.
- DEDNIM: The reversed spelling of "MINDED."
- YLLACIKNOOR: A corrupted reversal of "ROOKNICALLY" or, more plausibly, "RONICKALLY." The intended word is uncertain because of transcription errors, but the reversed structure indicates ordinary English rather than coded traffic.
- EHT: The reversed spelling of "THE."
- LEASE: The reversed spelling of "ESAEL." This appears to be part of a longer word, likely truncated before or after this excerpt.
- SIDYAY: A corrupted reversed fragment whose intended English wording cannot be determined with certainty.
- MDAEOWS: Another reversed text fragment affected by transcription artifacts.
- RIGAM: The reversed spelling of "MAGIR." This is almost certainly part of a longer English word.
- SSSFOOLEGDNE: A heavily corrupted reversed sequence. Despite transcription irregularities, its structure indicates that it originated from plain English rather than Morse abbreviations or cipher groups.
- 6ESTFO: The closing fragment begins with the numeral 6, followed by a reversed English sequence. The presence of the numeral is most likely the result of a decoding artifact rather than an intentional part of the original sentence.
Taken as a whole, the transmission closely resembles the novelty technique employed in several other stock Morse recordings in which a normal English sentence is first written backwards and then converted into Morse code. When decoded directly, the result appears to be meaningless letter groups; however, reversing the decoded text reveals fragments of ordinary prose. Numerous transcription errors and the truncation of both the beginning and end of the recording prevent a complete reconstruction of the original sentence, but the recording clearly differs from authentic maritime or amateur radio traffic by disguising plain English as reversed Morse rather than transmitting operational communications.
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