OT-36 / North Sea relay desk / 03:17 UTC drift

Numbers in the bakelite dark

The amber scale keeps its own weather. Even with the power cold, phosphor bands ghost across the desk; when the set warms, carrier hum, whistle, morse, and clipped number cadence rise out of the room like a file that never existed.

Frequency 6.210 MHz
Lock cold ether
Operator: M. Vale Room temp: 12.8 C Recorder: wire spool B
Bakelite shortwave receiver with draggable tuning dial A large brown-black radio face with amber frequency scale, speaker grille, signal lamps, and a circular tuning dial that can be dragged to tune from 4.5 to 12.2 megahertz. 4.5 6 8 12.2 SHORT WAVE 6.210 MHz S 9

The spectrogram is a visual-only fallback for the receiver. Cyan and amber bands intensify when the dial nears an active station.

copy desk wire spool 36-B

Live intercept

When the carrier steadies, the room starts counting.

Vale’s night desk keeps two copies of every signal: one in the wire spool, one in the margins. A carrier that looks empty on first pass often returns with numbers, teeth of morse, and the same patient voice pretending it is only weather.

No station copied S0 / drifting
-- -- -- -- --

The amber scale drifts between filed stations. One unprinted coordinate keeps showing up in the night notes.

Known band plan

Frequencies the desk trusts, and one it refuses to print.

7.7██ MHz unfiled lantern listed as a receiver fault Third seven returns. The paper log knows the missing teeth.

Intercept log / cream paper copy

Filed notes from the night operator.

IVY RAKE opened with 409 409 409, then switched to a six-count pause. Phosphor trace doubled at the upper sideband. Copy filed under WREN RIDGE.

CANDLE YARD sent a morse preamble: R, R, K, then the receiver needle hit S7 without voice. Operator notes the dial face slipped two ticks clockwise after warm-up.

Unfiled signal not in the band plan. Three sevens in the margin, then a round zero, then silence. The engineer calls it a cracked dial; Vale underlines LANTERN twice.

ORCHARD NINE used a male voice, clipped and metronomic: 12 88 12 04 61. Final group lost under heterodyne whistle from a trawler beacon.

FROST LECTOR appeared as cyan teeth across the waterfall. No voice. Checksum copied as 7716 before the trace folded into band noise.

One-time pad fragment

The hidden station has a plain-text habit.

The recovered pad strip was found behind the receiver service plate. Most groups decode to weather noise. One station, when tuned exactly enough, burns clean through the redaction.

OT-36 / pad strip 9 destroy after copy

LOCK REQUIRED: find the unprinted lantern frequency.

The developer relay only closes while LANTERN KEY is held.

Room apparatus

A station built from hiss, heat, and stubborn notes.

01

Bench receiver

Bakelite cabinet 36-A was pulled from a coastal relay room and rewired after the trim knob fused. The pointer still coasts through the suspicious part of the band.

IF drift
+0.18 MHz
Cabinet
phenolic resin, cracked left screw
02

Live ether

Power is logged by hand before the monitor is allowed to sing. Band noise, carrier hum, and whistle are copied as separate evidence, then cross-checked at dawn.

Monitor
paper cone 4 ohm
Rule
voice only after lamp warm-up
03

Waterfall copy

The phosphor sweep keeps moving after the room goes quiet. Known stations make clean teeth; the unlisted one leaves a bright wound between the sevens.

Trace
cyan phosphor, amber carrier
Fault
7.770 mark refuses erasure