The MADAR Tour
dated 2.21.2014

This page is subject to constant change as the MADAR System is upgraded. Before we take you on this
 interesting tour, we'll have to bore you with this brief technical description of the MADAR Mode Control Panel

On the MCP are four switches and two LED indicator lights, as well as two input/output jacks, and an alarm signal device. The green indicator light at upper left is the power status indicator, and below that is the switch that turns the MADAR MCP on. Right below this (cannot be seen) is the SPI (sensor pulse input)  jack. To its right is the "Arm" switch or pulse bridge that keeps the system from being activated during maintenance, etc., and allows data tapes and recorders to be left in standby record mode. When the arm switch is turned on, the system is ready for the detection pulses from the Sensor Cell Module, which you'll see later. On the right side of the panel is the blue indicator light which comes on with the alarm signal when the system is triggered. The switch to the bottom left is the relay switch, which allows the MCP to lock the DPDT relay in the "on" position when the system is activated. The alarm side of the MCP is now running and the green LED, the alert signal, 110 VAC circuits for the data recorders, and the 12 VDC to run the external V-700 Geiger/background radiation Module are all "on". The switch below the blue LED  turns off the alarm signal only. The output jack below this switch is the line to the V-700.

On the main floor and office north wall are the Quad Monitor, SVAT Quad Processor, Panasonic VCR, TLC2100 Time-Lapse Surveillance VCR, and the RWWV Receiver which is connected to a 150' horizontal antenna outside.

The North Wall


(Left) The Quad Display, (Right) Cam 3 view is selected

The Quad display is incomplete but will be updated when the back-up sensor is put in. In the left image, the security camera showing the room below is on the Camera 1 position. Camera 2 position is the feed from downstairs from the MADAR computer with the TES 1392 E-M device measuring the electromagnetic field in milligaus or microtesla. The bottom left is a miniature camera view of the primary sensor displayed on Camera 3 position. (see enlarged photo at right). Finally, the bottom right on the Camera 4 is blank here but will provide live images from the verticle card-type precision aircraft compass which is on its way.

There are two VCRs running.  The SVAT Quad Processor displays four images on the monitor that has a video time dub  onscreen and an audio WWV audio signal from Fort Collins, Colorado. The main VCR is a surveillance type, a GYYR TLC2100, that records the Quad presentation for 15 days. The tapes are replaced every two weeks and cataloged and stored for six months, then re-used.  During the event, the other video recorder which is manually activated, automatically shuts off after two hours.  This unit also records the WWV time code on the audio, but it has an extra channel that records transmissions from aircraft flying over the region.

One floor below the North wall rack  is a "cubby hole" 4' by 11' that houses stored data tapes and other materials and also houses the heart of the MADAR system. Isolated by distance, from accidental triggering, is the main sensor, the Sensor Cell Module. Also located here are the Switch Sensor Relay Module, Proximity Alarm Module, the MADAR Mode Control Panel, V-700 Background Radiation Module, data recorders, TES-1392 E-M meter and data logger, computer, digital to analog converter, and feed lines to the upstairs equipment.

The "Cubby Hole"


(Left) The Switch Sensor Relay Module, mounted upper right and detector Sensor Cell Module
mounted lower left; (Right) Switch Sensor Relay Module in detail.

The Sensor Cell Module houses a very sensitive 254 mm magnet variometer, monitored around the clock by a verticle light beam from an LED on the bottom and the photoelectric cell on the end of a small cable at the top.  The Switch Sensor Relay Module is isolated from the detector unit and the PE cell on the small line is situated in "light tube" which isolates the chamber so that the CM208C minicam can observe and  record the actual sensor movement.

The Proximity Alarm Panel Module

When the MADAR system is triggered, the sensor movement that caused this produces 12 VDC pulses that are sent to this module which displays red flashes on the LED indicator. When this is occurring there are also corresponding clicks or pulses in the audio range that are recorded. All this indicates that the source of the E-M disturbance is "live" and the proximity is close enough to trigger the system. The sensor line plugs in the input jack on the bottom left and the outgoing pulse that triggers the whole system, the Mode Control Panel,exits the output jack on the right. Since the system doesn't record the first pulse, the one that triggered it, I refer to as "the phantom pulse". The data can be graphically displayed and studied using Audacity software.

TES T-1392 Data logger

This device has two applications for the MADAR Project.  One, it gives us E-M readings during the event which are graphically presented by computer, then fed to a digital to analog converter, which feeds the video to the Quad Processor and both VHS recorders. When the MADAR alarm sounds, one of the chores of the operator is to hit the RECORD button on the T-1392 which starts the data logging process. After the event we can see the actual readings for the whole period. Prior to an event the data logger is programmed and the scan rate is set. All the operator has to do is turn it off at some point after the alert is terminated.  The specifications for this device are presented below.

Display 3-1/2 digits. Max. indication 1999
Range 200 / 2000 milli Gauss 
200 micro Tesla
Resolution 0.1 / 1 milli Gauss 
0.01 / 0.1 micro Tesla
Number of Axis Single axis
Band Width 30 Hz to 300 Hz
Accuracy +/- (3% + 3d) at 50Hz / 60Hz
Over-Input Display shows "OL"
Sampling Time Approx. 0.4 second
Battery 4 pcs size AAA (Alkaline Battery)
Battery Life Approx. 60 hours
Operating Temp and Humidity 0 ℃ to 40 ℃ (32℉ to 104℉) below 80%RH
Storage Temp and Humidity -10 ℃ to 60 ℃ below 70%RH
Weight Approx. 165g
Dimension 111(L) x 64(W) x 34(H) mm
Accessories Operation Manual, 4 pcs size AAA (Alkaline Battery), RS-232 interface / software (1391/1392)
Data logging Capacity(TES-1392) 16000 Point Data logging


We are in the process of obtaining and using a flux compass or fluxgate magnetometer with a chart recorder. This was donated and is on the way.

V-700 Geiger Module (pending completion)

The line to the unit emanates from the output jack on the Mode Control Panel. When the system is activated, the 12 VDC powers up a DPDT relay in the V700 Module to switch on both circuits of the V-700.  The V-700 runs on 4-"D" cells but can operate for hours. The output, in the form of clicks which convert to counts per minute, are fed into a cassette data recorder which has also been switched on by the MCP system. When the tape runs out the recorder shuts off automatically. The data can be graphically displayed and studied using Audacity software.


It's very early in the morning. The dream sleep is suddenly interrupted by the sound of a alarm signal. Unlike a smoke alarm that fills the air with sudden fear, this alarm could be anything, but it could also be....something. It had happened before in 1977 with MADAR, but that original project was shut down after 20 years, and even that shutdown was another 20 years ago. But this MADAR is much more sophisticated.

The sleepy operator climbs out of bed and quickly walks across the hall and on into a room with a rack of equipment on the north wall. One VCR runs 24/7 but another one must be turned on manually. He hits the record button on this one and also turns on the large CRT Quad Monitor.  He then quickly walks back into the hallway and down two short flights of stairs in the split-level home and then enters a small 4'x 11' long room that has already sensed his approach and automatically activated a light . On the MADAR Mode Control Panel, just below the steady green light is a toggle switch. He turns off the audio alarm, then hits the record button on the E-M data logger.  Everything else is automatically running, and has been since the system was put back in service on March 1st of 2014.

He then grabs his telephone and calls a SKYNET observer who then calls another member on the list already prepared for just this occasion. The alert is on. He then quickly puts on his shoes and grabs his cameras and goes outside to scan the heavens. Every attempt has been made to gather whatever data can be obtained. The alert for whatever might have caused the APD can last as long as weather or sky conditions or the hardiness of the observer permits. But MADAR has been running around the clock, 24/7, week after week, month after month, and the alert and stepped up alert status was caused by something that made a 254 mm magnet variometer  move away from North.

In the region, law enforcement (police, sheriff, state police) and Air Route Traffic Controllers at the local airport have been advised in advance to forward calls received regarding unidentified aerial phenomena. When an event takes place it will be up to the operator to contact the airport ARTC's to check for radar anomalies. If anything is discovered, FOIA action can provide recordings of the radar display which our experts can view and analyze.

Nearly all modern smartphones  have built-in sensitive magnetometers integrated with fast processors, GPS, cameras, and accelerometers (and in some cases temperature and humidity sensors), all connected to the internet by high-speed data link. We have people as we speak writing an app that detects radical changes in the magnetic field. The GPS position, exact time, etc can be automatically logged and transmitted to databases and other app users.

Hopefully, this is only the beginning. It turned out to be very appropriate over 40 years ago to name our system, MADAR: MULTIPLE ANOMALY DETECTION & AUTOMATED RECORDING.

Francis Ridge
The MADAR Project
(812) 838-3120