EMFields Measuring Equipment

Stock: 5 in stock

Further Information

Mobile phone base stations are springing up all over the place, often with very little warning of their arrival. Until now, the equipment needed to measure the microwave fields emitted by these base stations has been too expensive to obtain and too complicated to use for non-scientists who are concerned about the radiofrequency electromagnetic fields in their houses, workplaces, children's schools, etc. Now, you can afford to hire one of these easy-to-use monitors. It is no longer possible to buy an Acousti-COM. The Electrosmog Detector is the production model of the A-COM if you wish to buy an instrument to enable you to 'hear' pulsing microwave emissions.

The Acousti-COM monitor allows you to hear the "aggressive pulsing" of microwave signals from mobile phone base stations (including TETRA and 3G), DECT cordless phones, mobile phones, microwave baby monitors, microwave burglar alarms, Bluetooth devices, wireless computer & laptop systems, etc. (50MHz - 6000MHz). With a sensitivity of slightly lower than 0.01 V/m, the A-COM is much more sensitive than the COM monitor.  In areas free of low-frequency amplitude pulsing microwaves the Acousti-COM emits a gentle "background hiss". See the links below for some sound file examples:

- Background Hiss (MP3, 79 KB)
- GSM (MP3, 45 KB)
- DECT (MP3, 111 KB)
- TETRA (MP3, 77 KB)
- 3G (MP3, 104 KB)

When microwaves are pulsing up and down in level, you can hear these changes up to about 10 kHz (a very high pitched whine). The A-COM does not have an RF gain stage (as that could make it misleadingly sensitive) and simply rectifies any pulsing microwave signals that are hitting the A-COM and your body. It then amplifies any signals in the audio range so that you can hear them. You can also hear a "swish" as any rotating airport or naval radar beam sweep by.

Despite some mobile phone Operators, and people like Sir Colin Blakemore (ex Stewart IEGMP Committee, AGNIR, MTHR, etc) repeatedly giving out misleading information that mast emissions are "continuous rather than pulsed", GSM and UMTS (3G) base stations do emit a complex pulsed microwave signal. The GSM signal was defined by Simon Mann of the NRPB (in December 2002) for the Department of Health's MTHR research programme in a "volunteer exposure specification document" that clearly showed all the pulsing we have claimed for the past 9 years.

GSM base stations emit a harsh sounding 1733 Hz (three octaves above concert A) high pitched whistle (full of high frequency signals due to the short 30 microsecond gaps between the pulses) from the base control carrier (BCCH), and a mixture of 217 Hz plus harmonics from the traffic channel(s) with very low frequency bursts and interruptions [example sound file (44.8KB)]. The A-COM allows you to hear the totality of the signals that your body is being bombarded with, so that you can find any "no microwave-pulsing" areas in your house and garden and test screening materials, etc.

UMTS (3G) base stations emit a 1,500 Hz high-pitched whistle and a mixture of complex modulation (heard as sounds on the A-COM) in the 2,000 - 20,000 Hz range. This mish-mash of 'noise' is dependent on people making phone calls and the level can vary from very low to very high, depending on the number of calls being made at that time.

DECT cordless phones and their base units emit a 100Hz pulsing (plus higher frequencies due to the sharp sides of the pulses); the base units do this 24 hours a day even when you are not using the phone! You can tell which houses have DECT phones by walking past them holding the A-COM monitor.

Wireless LANs used to network computers and sometimes to connect to broadband internet emit their radiation in short bursts. These are heard as a scratchy pulsing/clicking noise on the A-COM which varies from a few clicks per second to an almost continuous clattering sound.

You can also hear the 50 and 100 Hz pulsing from microwave ovens and the 17 and 70 Hz pulsing from TETRA base stations, etc, etc.

Despite what some of the mobile phone operators will tell you, the A-COM does not react to power-frequency sources of EMFs. It does not react to fluorescent lights further than at a few inches distance.