Skinwalker Ranch 1.6 GHz signal: what is always overhead?

The question

The History Channel series The Secret of Skinwalker Ranch (shown in the UK as The Curse of Skinwalker Ranch) keeps returning to a radio signal "at 1.6 GHz". Recaps of at least eleven episodes between 2022 and 2026 report it appearing when a drill starts, rockets go up or drone swarms switch on.

The argument is about timing: it showed up during the experiment. If something ordinary is always transmitting near 1.6 GHz over the ranch, then "it appeared during the experiment" would be true of every experiment and every tea break. This test asks only that, not what the signal was.

The calculations were run by an AI model (Claude) on public orbit data, at Paul L. G. Harris's direction. Claude cannot watch television, so everything about the programme comes from written recaps, network pages and a hobbyist radio blog.

The test

No source read gives the frequency to more than two figures. None gives a bandwidth, duration, signal level or screen read-out, and no recording has been released. "1.6 GHz" is not a spot on the dial. Anything from 1.55 to 1.65 GHz rounds to it, a stretch about 100 MHz wide and among the busiest on Earth. It holds Inmarsat satellites, GPS and GLONASS (all sending down to the ground), Globalstar phones and trackers (sending up) and Iridium satellites and handsets (both ways). The band edges have not been checked against the official ITU and FCC texts.

A plan saved on 1 October 2026 made two predictions. An Iridium satellite (the satellite-phone network) would be more than 10 degrees above the horizon more than 95% of the time, and at least four GPS and four GLONASS satellites would be up all the time.

The method used CelesTrak orbit data dated 30 September 2026 and the ranch's position (40.258 N, 109.888 W, 1,500 metres), with a reading every ten seconds for seven days from 1 October 2026: 60,480 samples. These are 2026 orbits, not filming-date orbits. The constellations are held in fixed patterns, so the statistics carry over, but no claim is made about any filmed moment.

What came out

Both predictions held. Every ten-minute window had an Iridium satellite in view throughout. Counting only satellites above 20 degrees, a rough allowance for terrain that was not modelled, Iridium falls to between 71% and 74%, while GPS and GLONASS stay at 100%.

Two points follow. "It's just GPS" is a poor answer, because GPS and GLONASS are too faint to show as a spike on a spectrum analyser. And the strong signals in this band come from the ground, pointing up: satellite phones, trackers, oilfield telemetry. Nearby, such a device is millions of times stronger at the antenna than the satellite it talks to. That is speculation as applied to the ranch, and there is no evidence that any particular device was present.

Recaps place the source overhead in one episode, inside the mesa in another and at Homestead Two in three more. Overhead fits a satellite; the others fit a ground device or a reflection.

A second test took 32 bands of ordinary equipment and formed their harmonics and mixing products. 91 land between 1,550 and 1,660 MHz. It cannot pick a culprit, which is the point: a frequency known to two figures matches almost anything.

The "33 MHz" signal is four numbers (29, 31, 33 and 34 MHz) in four episodes, tied by the programme to its own drill-head beacon. The signals said to "mimic" the team each followed the team switching on its own transmitter at that frequency.

What this does not show

It does not show that the signal was Iridium. A satellite in view is not the same as one strong enough for a handheld analyser with a short antenna. Nor does it show the signals are ordinary, because the team may hold recordings that rule these candidates out.

It rests on recaps. No episode was watched, so frequencies may have been rounded or mistyped, and the recap wording has not been checked word for word.

A hidden message cannot be tested. A message is a pattern in how a signal changes with time, which a spectrum display throws away, and no raw recording is public. Paul asked the ranch's team for recordings on 1 October 2026 and, when the book draft was written, had no reply. That is why this page is marked provisional.

Where it goes in the books

Book 7, The Ranch at the Edge of Time. This is the lead study in the Interlude, "The Machine Checks the Signal", with the band table in Chapter 7 and the radio-silence test in Chapter 8.

You can check it. The orbit data are public. To test the signal itself, the kit costs about £250: a receiver covering 24 to 1,766 MHz, an L-band antenna, a 50-ohm terminator and a 10 dB attenuator. Record an hour with every phone in a metal box and no drones or radios, switch things on one at a time, log the clock, compare with a site 20 to 30 km away, and publish the files. If your numbers disagree with ours, please say so.