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Meter models

EMFields Acoustimeter AM-11

Single-axis broadband RF meter reading 200 MHz – 8 GHz with a peak display from 0.02 to 10.00 V/m and a true time-averaged display from 0.1 to 250,000 µW/m², plus an audio output for identifying sources by ear.

Broadband meterEMFields Solutions Ltdsingle-axisCurrent model

Last verified 12 August 2026.

Also searched as: AM11, Acoustimeter, AM-11 Acoustimeter

Manufacturer
EMFields Solutions Ltd
Model
AM-11
Type
Broadband meter
Instrument class
Broadband RF power-density meter
Quantities measured
power density, electric field strength
Axes
single
Peak hold
Yes
On-device logging
No
Declared accuracy
±6 dB ±0.02 V/m across the stated bandManufacturer figure, not an independent verification.
Market status
Currently sold

Frequency coverage by mode

One band per measuring mode, as the manufacturer states it.

power density
200 – 8,000 MHz, ±6 dB ±0.02 V/m
electric field strength
200 – 8,000 MHz, peak display in V/m

Display range by mode

Peak field strength
0.02 – 10.00 V/m (resolution 0.01 V/m displayed)
Average power density
0.1 – 250,000 µW/m²

Calibration

Manufacturer-stated factory calibration with a five-year return-to-base warranty; no accredited calibration certificate is advertised.

Suited to

  • Separating pulse peaks from time-averaged exposure, which is the distinction most exposure limits are written on: the average display is a true rolling mathematical average, not a peak scaled down
  • Recognising DECT, Wi-Fi, GSM and TETRA by their sound signature
  • Very low-level work: the manufacturer states audio is audible below 0.02 V/m

What it cannot do

  • No low-frequency magnetic or electric field capability at all
  • Nothing above 8 GHz — mmWave 5G is out of band
  • Single-axis with a directional case: the manufacturer states it under-reads when the source is in front of the display, so orientation matters
  • No numeric spectrum or frequency readout, so source attribution is by ear and by elimination
  • No logging or PC output

What these figures are

Every number on this page is the manufacturer's own declared specification, reproduced so that models can be compared field by field. Nothing here is an independent test of the instrument, a calibration certificate, or a statement that a reading taken with it can be compared with a regulatory limit — that depends on the detector, the averaging and, where it matters legally, an accredited calibration.

Related records

  • Broadband RF power-density meter

    The general-purpose instrument for Wi-Fi, cellular, 5G, smart meters and cordless phones: reports total power density across a wide band in µW/m² or mW/m², with peak-hold and average modes.

    Instruments

  • RF room survey

    How to measure radiofrequency exposure in a room so the result is reproducible: peak and average, at body positions, with the dominant direction identified.

    Measurement protocols

  • Averaging time

    Regulatory limits apply to an average: 30 minutes for the general public under FCC and ICNIRP rules, 6 minutes for occupational exposure.

    Glossary

  • Electric field strength

    Volts per metre, reported both for power-frequency electric fields near wiring and for radiofrequency fields near transmitters.

    Quantities & units

Sources

  1. emfields-am11 AM11 Acoustimeter — specifications — EMFields Solutions Ltd, United Kingdom. manufacturer, link checked 2026-08-12.

Same record, other formats