The Repeating Silence: When Dead Air Follows a Pattern

23:47 local, May 24th, 2026

I need to document this before I second-guess what I'm seeing in the logs.

For the past 21 nights, a shortwave frequency I've been monitoring — 7.347 MHz — has gone completely silent at exactly 02:17 military time. Not degraded. Not drowned in static. Just dead air for precisely 11 minutes, then normal traffic resumes at 02:28.

Every. Single. Night.

## THE OBSERVATION

I first noticed it three weeks ago while running my usual overnight frequency sweep. The 7.347 band typically carries low-level chatter — truckers, ham operators, the occasional encrypted burst I can't decode but have learned to recognize. Background noise of the airwaves.

But at 02:17 on May 4th, it flatlined. Complete silence. I checked my equipment — antenna connections solid, SDR receiver functioning normally, other frequencies all active. Just that one band, dead.

I logged it. Figured it was atmospheric, maybe a solar event I'd missed.

Then it happened again the next night. Same time. Same duration.

I've been tracking this for 7 years now, and I've never seen a pattern this consistent that wasn't either man-made or equipment failure. This doesn't feel like either.

## THE DATA

*Times of silence (all in military time):*

• Duration: 11 minutes exactly (02:17 to 02:28)
• Frequency: 7.347 MHz
• Consistency: 21 consecutive nights
• Weather conditions: Variable (clear, overcast, rain — doesn't matter)
• Moon phase: Waxing to full to waning (not correlated)

I've ruled out:

• My equipment (tested with backup SDR, different antenna)
• Local interference (other frequencies unaffected)
• Scheduled maintenance (no notices from frequency coordinators)
• Solar activity (space weather has been quiet)

## THE ALTERNATIVE

Here's what I keep coming back to: coordinated transmission suppression.

Someone with the right equipment could jam a specific frequency for a specific window. Military exercises do this. So do certain federal operations when they need a clean channel. The precision suggests intentional control — you don't get 11-minute windows by accident.

I checked the dates against known military exercise schedules in the region. Nothing matches. But that doesn't mean much — plenty of operations don't get announced.

The other possibility: it's a relay timing issue. Maybe a repeater station somewhere goes offline for maintenance at 02:17 every night, and the silence I'm hearing is just the gap in coverage. Mundane. Explainable. The kind of thing I'd have figured out in 20 minutes back when I had access to proper network documentation.

But then why 11 minutes? Why such precision?

## THE COINCIDENCE

Here's what bothers me: 02:17 is within the window when I've logged the most aerial activity over The Clearing. Not every night, but often enough that it's in my notebooks. The Returns tend to cluster between 02:00 and 03:00 when they happen.

Coincidence has a pattern if you look long enough — I know that. I also know confirmation bias is real. Maybe I'm connecting dots that don't form a line.

But I can't shake the feeling that someone is clearing the airwaves during that window. For what? I don't know. Maybe nothing I'd recognize even if I heard it.

## WHAT HAPPENS NEXT

Tonight I'm setting up a secondary monitoring station at The Ridge with a directional antenna. If this is localized jamming, the signal strength should vary by position. If it's something else... well, that's what the log is for.

The numbers don't lie, but they don't always tell the whole truth either.

Maybe it's just a quirk of propagation I don't understand. Maybe it's a maintenance window for equipment I'll never know exists. Or maybe someone needs 11 minutes of silence at 02:17, and they're making sure they get it.

Another entry for the log.

Stay vigilant.