Tag Archives: High Frequency Active Auroral Research Program

Paul explores the Luxembourg Effect

Many thanks to SWLing Post contributor, Mike Hansgen, who shares the following article by Paul Litwinovich at WSHU:

In this article I’ll look at two things that, unless you are a serious ham operator or an absolute radio geek, you probably are unfamiliar with.

First, we will take a look at a very rare phenomenon first noted by radio listeners back in 1933. It generated several theories, but the correct one was only verified experimentally in recent times.

Second, we will look at a government-funded project that, while built for other purposes, was used to confirm the phenomenon 75 years later.

The Luxembourg Effect was first documented by electrical engineer and professor Bernard Tellegen. The professor is also credited with the invention of the tetrode vacuum tube. My past article, A Radio for the Roaring Twenties, features one of the first radios to use the tube.

One night, Mr. Tellegen was in the Netherlands, listening to a station transmitting from Beromunster, Switzerland, on 652 kHz. In the background of the Swiss signal, he could hear the audio of Radio Luxembourg, which normally broadcast on 252 kHz. He was far enough away from each station that neither station’s signal would have been strong enough to overload his receiver. The two signals seemed to be mixing somehow, but by what means?[…]

Click here to continue reading at WSHU.

HAARP Amateur Radio Experiment

(Source: Southgate ARC)

Radio ham’s HAARP experiment

The IEEE Spectrum reports on the Slow Scan Television (SSTV) transmissions made from Alaska’s HAARP facility by radio amateur Chris Fallen KL3WX

In late September, Christopher Fallen and technicians at the High Frequency Active Auroral Research Program (HAARP) near Gakona, Alaska, switched on a giant array of 180 antennas. They were hoping to produce radio-induced airglow, also known as artificial aurora, as a way to better understand the mechanics of natural aurora.

He embedded images into the powerful radio wave that HAARP uses to heat a patch of the ionosphere, and alerted amateur radio enthusiasts through Twitter. As the experiment ran, his feed began to light up with tweets from listeners who were sending the images back to him.

Fallen, an assistant professor at the University of Alaska Fairbanks’ Geophysical Institute, had transmitted two UAF logos, a cat photo, and a QR code granting the recipient 0.001 Bitcoin.

Messages returned from Pueblo, Colo., and Victoria, British Columbia. Given that HAARP’s antennas point directly up at the sky instead of out toward the horizon, Fallen was pleased with the results. “As powerful as HAARP is, it’s just a big radio,” he says.

It’s actually a giant phased array radio transmitter capable of sending 3.6 megawatts of energy into the ionosphere.

Read the full story at

Click here to read at the Southgate ARC Website.

HAARP Open House: August 19, 2017

Many thanks to Chris Fallen (KL3WX), Assistant research professor in the University of Alaska Fairbanks Geophysical – Space Physics group , who shares the following information about the upcoming HAARP Open House:

HAARP Open House 19 August, September campaign

The next HAARP open house will occur on 19 August 2017 and include round-trip bus transportation from Fairbanks for $45 which will help bring costs down for individuals, particularly for those from out of town.

(Flyer attached, though I am not aware of an official press release yet but updates will be posted at http://www.gi.alaska.edu/haarp)

Throughout the day there will be talks by Geophysical Institute researchers on-site about the HAARP facility and research, and other research topics pursued at the UAF Geophysical Institute. As in the previous year, tours of the main transmitter array, control center, and power generation plant will be offered throughout the day. Hams and radio enthusiasts are encouraged to bring their equipment for photo opportunities or even to make contacts from the site.

Any SWLing Post readers/contributors plan to attend the open house? If so, we’d love to share your photos! Please contact me if interested!

HAARP campaign update: Luxembourg Broadcast & Artificial Aurora

Many thanks to Chris Fallen (KL3WX), Assistant research professor in the University of Alaska Fairbanks Geophysical – Space Physics group , who shares the following update from the High Frequency Active Auroral Research Program (HAARP):

Campaign time!

Experiments begin in the mid morning 19 February Alaska Standard Time (AKST) and continue intermittently through the evening each day through 22 February.

Luxembourg Broadcast

The first radio modification of the ionosphere occurred in the early 1930s and was an accidental consequence of the new and powerful Radio Luxembourg transmitter. In certain situations, listeners of other weaker broadcast radio stations found that they sometimes heard Radio Luxembourg programming even though it was transmitted on a completely different frequency. Scientists and engineers eventually concluded that signals from powerful Radio Luxembourg and less powerful stations were being mixed in space, that is, through ionosphere modification.

HAARP will transmit a sequence of tones and music using amplitude modulation (AM) on two different radio frequencies (2.7 MHz and 3.3 MHz) in a sort of reproduction of this so-called Luxembourg Effect. If conditions are sufficient and you tune-in to one frequency or the other, you will hear tones and music from both frequencies. The tones and music have been specifically composed to take advantage of the Luxembourg effect.

The Luxembourg broadcast will begin as early as 6 p.m. on 19 and 20 February Alaska Standard Time (AKST) and conclude by 6:40 p.m. In Coordinate Universal Time (UTC), the broadcasts will begin as early as 03:00 on 20 and 21 February and conclude by 03:40. Tune in to 2.7 MHz or 3.3 MHz (2700 KHz or 3300 KHz), or both! The program is approximately 10 minutes in duration and will repeat until 6:40 p.m. AKST or 03:40 UTC.

Artificial Aurora

Aurora photographers in Alaska, Yukon Territory, and northwest British Columbia have a chance to photograph artificial aurora created with HAARP, starting immediately after the Luxembourg Broadcast and continuing until the ionosphere critical frequency over Gakona drops below about 2.7 MHz.

Radio listeners can still tune-in to these operations, but the transmissions are slightly more complex in order to test a scientific hypothesis. Also, at least in these initial experiments, the broadcast will only sound like a silent carrier wave, as if a radio DJ fell asleep and neglected to change the record (or now, more likely, the digital file). The specific transmission sequence is as follows:

MAIN: Repeat the following 480 second sequence if foF2 > 2.80 MHz

90 seconds : 2.80 MHz
30 seconds : OFF
90 seconds : 2.80 MHz, O mode, CW modulation, MZ direction
30 seconds : OFF
90 seconds : 2.82 MHz, O mode, CW modulation, MZ direction
30 seconds : OFF
90 seconds : 2.84 MHz, O mode, CW modulation, MZ direction
30 seconds : OFF

BACKUP: Repeat the following 240 second sequence if foF2 < 2.80 MHz

90 seconds : 2.75 MHz
30 seconds : OFF
90 seconds : 2.75 MHz
30 seconds : OFF

Thank you, Chris.

Chris tells me that his campaigns are “strenuous chair-and-keyboard marathons” where, at times, he drives a mile or so to adjust cameras and drives back to the operations center to make adjustments there–the process being repeated many times over. I can only imagine how challenging it must be working with a site so vast.

Note that we have given Chris Fallen an account on the SWLing Post so he can directly post details about HAARP campaigns and research prior to and after events, when his time allows.

HAARP February 2017 on air operations

Many thanks to Chris Fallen (KL3WX), Assistant research professor in the University of Alaska Fairbanks Geophysical – Space Physics group , who shares the following update in reference to upcoming HAARP activities:

Regarding this February 2017 campaign, HAARP will be operating from 19 to 22 February.

Specifically, experiments will begin daily sometime after 1800 hours 2/19 UTC. My experiments will be the last each day (local Alaska time) and are scheduled to start at 0330 hours on 2/20, 2/21, and 2/23 UTC; and at 0430 hours on 2/22.

Experiment times and frequencies are subject to change for various reasons, particularly in response to ionospheric conditions shortly before each experiment.

I will do my best to update https://twitter.com/ctfallen in real time.

Operations are very active times and I will be monitoring conditions and equipment so generally speaking, for my artificial aurora experiments, your best bet is to search around 2.7 MHz +/- 100 kHz given current conditions.

For the Luxembourg effect experiments, I will try to keep the two frequencies separated by about 1 MHz, which means that they will occur earlier in my experiment window rather than later, when the ionosphere is more dense.

Many thanks for the update, Chris.

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