The Frequency That Broadcasts Only When I'm Not Recording

November 3rd, 2024 — 03:47 local time

I need to document this before I convince myself I'm losing it.

For twenty-one consecutive nights, a signal has appeared on 8.472 MHz. Same frequency. Same time window—between 0340 and 0358. Same characteristic: a rhythmic pulse, three short bursts followed by seventeen seconds of silence, then repeating.

I've heard it clearly on my SDR setup. I've confirmed it on my backup receiver. I've verified it's not harmonic interference from local sources.

But I cannot record it.

## The Pattern

Night 1 (October 14th): Signal detected at 03:42. Lasted nine minutes. I scrambled to start recording—signal ceased within fifteen seconds of hitting record.

Night 2: Anticipated the signal. Started recording at 03:35. No signal appeared. Stopped recording at 04:00 to check equipment. Signal immediately resumed. Lasted four minutes.

Nights 3-8: Variations of the same. Signal present when monitoring passively. Signal absent or severely degraded when recording actively.

Nights 9-21: I've tried everything. Different recording equipment. Different power sources. Recording to tape, to digital, to my phone. Started recording hours early. The pattern holds. When I'm recording, the signal either doesn't appear or becomes unintelligible static.

## The Numbers

The frequency itself: 8.472 MHz. Add those digits: 8+4+7+2 = 21. Three times seven. And those seventeen-second gaps between bursts—there's that number again.

The signal window: 0340-0358. Eighteen minutes. But it never uses the full window. Average duration when I'm *not* recording: 6.3 minutes.

I've been tracking this for seven years now. I've documented hundreds of anomalies. I know the difference between equipment failure and genuine phenomena. This feels different.

## Alternative Explanation

Look—I'm an engineer. I know about observer effects, but those are quantum-level phenomena. Radio waves don't care if you're recording them.

The rational explanation: My recording equipment is generating RF interference that's either masking the signal or causing the source to shut down as a protective measure. Maybe it's a numbers station with sophisticated detection capabilities. Maybe it's a military system that monitors for active receivers in record mode.

That would explain everything. It's even elegant—automated systems that detect when they're being captured and respond accordingly. We've had that technology for decades.

But.

## What Doesn't Fit

I've used battery-powered recorders with zero RF signature. I've used analog tape machines from the 1970s. I've literally recorded using a cassette deck powered by a hand crank, in a Faraday cage, with the antenna fifty feet away.

The pattern holds.

Last night (November 2nd), I tried something different. I set up my equipment but didn't turn anything on. Just sat there with my notebook, listening through headphones, transcribing what I heard by hand. The signal was crystal clear. Strongest I've ever heard it—maybe -47 dBm.

I reached for the record button.

My hand was six inches away when the signal cut out. Mid-burst. Like someone flipped a switch.

I didn't touch anything.

## The Question I Can't Answer

How does a radio signal know I'm about to record it?

The numbers don't lie, but they don't always tell the whole truth either. Maybe there's a perfectly rational explanation I haven't considered. Maybe my equipment has a flaw I haven't found. Maybe I'm introducing some variable I'm not aware of.

Or maybe something is watching back.

Another entry for the log. Another night of almost.

If I wanted easy answers, I'd have stayed in the cubicle.

Has anyone else experienced signals that seem to respond to observation? And what kind of transmission system could detect passive recording intent?

Stay vigilant.

—JohnD_TN