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RF Meters

Smart Meter


Calibrated, Directional, Accurate, Sensitive
This is the Recommend Meter for Checking "Smart Meter" Emissions

High Frequency Meter

We like this calibrated wideband (800 MHz 2.5 GHz) RF meter because it has a switch which allows a choice of peak or average indication mode. This permits accurate measurement of both digital and analog signals. Two ranges: 1 - 1999 W/m (same as 0.1 199.9 nW/cm) and 0.1 - 199.9 W/m (same as 0.01 19.99 nW/cm).

In addition, you get a choice of audio tone none, or intensity proportional to field strength, or proportional to frequency (for analyzing pulsed signals)
- accuracy 6 dB
- true logarithmic - periodic antenna, 800 MHz 2.5 GHz, single polarized, included
- standard 9V battery included

The display on the HF35C updates every 0.5 second. The fastest pulse it can detect is 0.5 micro seconds.
When in peak mode, the display averages all peaks within of a second. The average peak is displayed on the display.
In RMS mode it displays the true average of all signals during that second period. This reading is much lower than Peak mode when measuring a digital signal.

Easily detects cell phone towers, cordless phones even microwave oven leaks. Instructions in German and English. The 3 minute YouTube video at right demonstrates how the sounds from this meter help distinguish different sources of RF (video sound starts after 19 seconds). 2 year Warranty. Model HF35C.

Link here to Smart Meter shielding options.

High Frequency Meter (Cat. #A481) ........ $429.95 add to cart



Extends Dynamic Range of High Frequency Meter

Is the High Frequency Meter too sensitive for your application? This Attenuator reduces sensitivity by a factor of 100 so you can measure stronger signals. Changes sensitivity range from 0,1-1999 W/m to 10-199,900 W/m (equivalent to 0.001-19.99 W/cm). Need to go still higher? Stack as many as you like to achieve the desired range. Designed specifically for the High Frequency Meter (Cat. #A481). Inserts between antenna and meter body.

20 dB Attenuator (Cat. #A485) $89.95 add to cart

Extended Range High Frequency Meter


Just like the High Frequency Meter above but examines 27 MHz - 3.3 GHz, with residual sensitivity to 6 GHz. Includes both a directional and an omni-directional antenna. Model HFE35C.

Extended Range High Frequency Meter (Cat. #A483) ........... $995.00 add to cart



ACOUSTICOM2 Simplicity Without Compromise

A reliable meter with an economy price. Great for checking radiowaves from smart meters, wi-fi, cellphones and towers, and just about every RF source you are likely to encounter at home or in the office. Covers an amazing 200 - 8000 MHz with 6dB accuracy. 8 LED light bar indicates field strength in V/m so it is very easy to interpret and has a very fast reaction time. Best of all, it has a dual sound feature which you can turn off if you want: Demodulated sounds allow you to hear intensity, and with a small amount of practice, what type of device is creating the microwave signal. Plus, an "alarm" sounder which emits a pulsing warning at higher exposure levels.

The internal antenna is at the upper back of the case. Signals are best measured when the source is behind the instrument. Uses one 9V battery, included. Pocket sized and light-weight.

  • Range (Peak Display): 0.01 - 6.00 volts per meter (V/m)
  • 0.01 0.02 0.05 0.1 0.3 1.0 3.0 6.0 V/m increments; (0.5 to 100,000 W/m)
  • Power draw: 40 to 90 mA (depends on the sound volume)
  • Battery life: Up to 10 hours continuous with normal alkaline battery
  • Size (mm): 110 x 63 x 21 (LxWxD); Weight: 140g incl. battery

Acousticom2 (Cat. #A140) .... $249.95 add to cart

18 GHz RF Meter

18 GHz RF Meter

Ruggedized, Portable, and Simple

This delightful meter measures electric field from 50 Hz to 18 GHz! Telescoping antenna and one button operation provide the simplicity you want, and the logarithmic scale provides the range you need: from tiny 0.005W/cm signals to ridiculously high 40mW/cm blasts. Just turn it on and read off the meter. Needle gauge offers super-fast response, so you can see the pulses from intermittent emitters too.

Perfect for identifying radiation hot spots at home or on the road, and for checking shielding effectiveness. Good quality at a low price!

  • Frequency response: 50Hz to 18GHz
  • Sensitivity range: 0.005 W/cm to 40 mW/cm
  • Accuracy: 10% (50Hz to 10GHz)
  • Battery life: 9V Duracell, approx 50 hours

18 GHz RF Meter (Cat. #A409) .................. $129.95 add to cart

Demonstration of this meter
with various RF sources

3-Axis RF Meter

3-Axis RF Meter

Perfect Low Cost Digital RF Meter

Breakthrough in low cost RF measurement. Covers 50 MHz to 3.5 GHz and great for digital and analog RF signals. Use in 3-axis (isotropic) measurement mode or check each of the X,Y Z axis! Includes audio alarm with adjustable threshold and 200 point manual memory function. Extremely sensitive: 38 mV/m to 11 V/m (equivalent to .38 nanoWatt/cm to 30 microWatt/cm). 4-digit LCD display offers mV/m, A/m, W/cm, or W/m. Display resolution: 0.1mV/m, 0.1A/m, 0.001W/m, 0.001W/cm. Updates 2.5 times per second. Choose to display instantaneous value, maximum value, or average. 2.4dB accuracy or better. Great for cell tower and wi-fi measurements. Uses 9V battery. 1 yr factory warranty. Model TM-195

Quick Start Instructions for 3-Axis RF Meter (pdf)

3-Axis RF Meter (Cat. #A495) ......... $199.95 add to cart

What our customers tell us:

"The 3-axis meter has given us information we could not possibly have guessed at, and has helped us make some initial changes which have helped me enormously. I was feeling as if I had the flu all the time with muscle aches and pains, an irregular heart beat and debilitating lack of energy. I started to feel better within days of making the initial changes."

S.H., Houston TX



Very Wide Frequency Range

Need to measure the new 5.8 GHz phones, baby monitors, DECT phones, wireless routers, surveillance bugs or other frequencies up to 8 GHz?

This breakthrough in higher frequency RF measurement covers 10 MHz to 8 GHz and great for digital and analog RF signals. 3-axis (isotropic) measurement. Includes audio alarm with adjustable threshold and 99 point manual memory function. Extremely sensitive: 20 mV/m to 108 V/m (equivalent to 0.1 nanoWatt/cm to 3 milliWatt/cm). 4-digit LCD display offers V/m, A/m, W/m, or W/cm. Choose to display instantaneous value, maximum value, or average. 1dB accuracy or better. Uses 9V battery. 1 year factory warranty. Model TES-593.

Owner's Manual for 8 GHz RF Meter (pdf)

8 GHz RF Meter (Cat. #A489) $499.00 add to cart

Basic RF Meter


Budget Minded, Information Packed Simplicity

This meter represents both a price and technology breakthrough! Simple hand held meter is so easy to use! Uses ordinary 9V battery (not included). Very sensitive (down to 25mV/m = 1.6 W/m = 0.16 nW/cm) and goes as high as 14.8 V/m (= 580 mW/m = 58 W/cm). Broad frequency range too: 100MHz to 3.0GHz digital or analog signals. 3.5dBm accuracy.

Look at all the information on the LCD screen:

  • Signal power level in dBm
  • Signal power density in mW/m
    - continuous from 0.0016 mW/m to 580 mW/m
  • Horizontal bar power level display with 12 5dBm segments
  • Moving bargraph showing signal changes over the last 32 readings
  • 8 segment LED bar (green/yellow/red) with corresponding power indication
  • Backlit for first 10 seconds of display
8 Intensity Level Increments
On the LED bar display
-5 dBm = 180 mW/m 
-10 dBm = 58 mW/m 
-15 dBm = 18 mW/m 
-20 dBm = 5.8 mW/m 
-25 dBm = 1.8 mW/m 
-30 dBm = 0.58 mW/m 
-35 dBm = 0.18 mW/m 
-40 dBm = 0.06 mW/m 

Truly unique tool for personal RF exposure detection and level measurement. Use it to check GSM, TDMA, CDMA, PCS, Wi-Fi and much more. Now check out the price! CE. Model ED-15C.

Basic RF Meter (Cat. #A437) .......... $89.95 add to cart

6 GHz Basic RF Meter


Wider Frequency Range

Similar to the Basic RF Meter above but with wider frequency range and SOUND! Very sensitive (down to 25mV/m = 1.6 W/m = 0.16 nW/cm) and goes as high as 14.8 V/m (= 580 mW/m = 58 W/cm). Broad frequency range too: 700 MHz to 6 GHz digital or analog signals with whip antenna supplied. 3.5dBm accuracy.

Includes removeable stubby antenna with SMA connection. Requires one 9V battery. CE. Model ED85EXS.

6 GHz Basic RF Meter (Cat. #A436s) .......... $179.95 add to cart


For RF Measurements Close to the Source Near Field Probe Image

Can be used with 8 GHz Basic RF Meter or High Frequency Meter (or other RF meter with SMA connection) to measure the magnetic field component of the signal in the near field (up close to the source of radiation). Useful from 800 MHz to 2.4 GHz. Great for checking cell phones, wifi, DECT, Blue Tooth and more. Also useful for checking the near field shielding effectiveness of your shielding items (such as cell phone shields). SMA male connector, 50 Ohm impedence. Only 8 cm long. Meter not included. Near Field Probe Image

Works well with: (may need adapter)
- 6 GHz Basic RF meter
- High Frequency Meter
- RF-id SOLO
- Broadcast Frequency Counter
- PC Based Oscilloscope (up to 40 MHz)

Cornet Near Field Probe (Cat. #A435) ............. $59.00 add to cart



Wider Frequency Range

Designed for quick measurement of high frequency (RF) field strength and frequency of the primary signal. It has broad bandwidth (100MHz to 8GHz), high sensitivity (-55dBm to 0dBm) and fast response time. Great for smart meters, wi-fi, cellphones and most wireless devices you would find around the home or office. Large LCD display gives lots of information including rolling history of last 32 readings. Internal antenna. Uses 2x AA batteries, not included.

Peak power measurement: 0.5 W/m to 1800 mw/m (14 mV/m to 26.29 V/m)
Ultra fast frequency display for digital burst signals: 100MHz to 2.4GHz
Model MD18

RF Field and Frequency Counter (Cat. #A434) ...... $189.95 add to cart


Smart Meter

The Acoustimeter is a user-friendly accurate RF measurement instrument which provides LED light and LCD text displaying peak, peak hold, and average levels of radio frequency electromagnetic fields, covering the spectrum from TETRA all the way up to and beyond the 5.6 GHz WiFi and WiMax frequencies. It has a digital readout which is sensitive 0.02 V/m - 6.00 V/m and a sound output enabling you to hear the signal modulation. These features make the instrument the most useful one available to even those with severe electrosensitivity.

The Acoustimeter has been designed to enable you to make a quick and informed judgement regarding the level and nature of microwave signals in your environment. It is a broadband instrument that accurately measures the totality of the radiation in the range 200 MHz to about 8000 MHz (8 GHz), which covers the frequencies used by most modern communication systems encountered in our everyday environment. The Acoustimeter was designed using the experience gained from many years of practical RF and microwave measurements.

The readings are shown on both an LCD display and two series of graduated LED lights. The LEDs update rapidly, and allow you to quickly gauge the levels in an area and find any hot-spots. The LCD display offers high accuracy with a lower update speed, giving you time to take note of the readings. It also has a speaker (and audio output socket for headphones or to feed to an audio recorder), allowing you to determine, with a small amount of practice, what type of device is creating the levels that are present. The sounds made by different transmitters can change with time, so these are meant as a rough guide only. If you are subject to a number of sources of RF, the sounds may intermingle and be less easily identified. If you need a carry case, it can be ordered seperately. 2 year mfr warranty.

The internal PCB antenna is at the top rear of the case. Signals are best measured with the source behind the instrument, but also quite good with the source to one or other side (particularly the left side away from the switches and volume control). It under-reads if the source is in front of the meter as the LCD display acts as an RF screen.

Link here to
Smart Meter shielding

Technical specifications

  • Two line LCD displaying actual levels:
      » Peak exposure levels in V/m
      » Peak hold levels in V/m
      » Average exposure levels in µW/m2
  • Two lines of LEDS displaying actual levels:
      » Peak exposure levels in V/m
      » Average exposure levels in µW/m2
  • Measurement range: 200 - 8 000 MHz ±3 dB
  • Sensitivity* (Peak Display): 0.02 V/m - 6.00 V/m
  • Sensitivity* (Average Display): 1 µW/m2 - 100,000 µW/m2
  • Pulsing signal may be heard through the internal speaker
  • Power source: 2x AA Alkaline or Rechargeable (1.2 - 1.5V)
  • Power draw: 105 mA at 3 V
  • Battery life: 20 hours
      » Typically 15 hours on two new 1500 mAhr AA alkaline cells and
      » Typically 25 hours on two charged 2700 mAhr NIMH rechargeable cells
  • Size (mm): 190 x 102 x 33 (LxWxD)
  • Weight: 280g, excluding batteries
Short video from YouTube showing
Acoustimeter in use:

Acoustimeter (Cat. #A139) ..................... $469.95 add to cart



Detects & Displays All 3 EMF Types at Once

The very unique ESI 24 checks for all 3 types of EMF: magnetic fields, electric fields, and radiowaves/microwaves simultaneously. Easy to interpret RED / YELLOW / GREEN LED lights indicate EMF level and are supported by a loudspeaker that gives an audible indication of field strengths. Sound frequency/intensity changes with increasing field strengths. Sound can be turned off if you prefer. Allows for quick and easy localization of the sources of different types of EMF. The display shows 5 different levels, ranging from extremely low (i.e. no significant radiation exposure) to too strong for prolonged exposure and distinguishes how much for each radiation type. Super easy and super sensitive.

Frequency RangeAxis
Magnetic field:16Hz 3kHz3
Electric Field:16Hz 3kHz1
Radiowaves:50MHz 8GHz3

Includes Enhanced RF Mode in which only RF is measured using all 15 LEDs. Gives greater range and greater resolution. Sources detected by ESI 24: cell phone towers, cordless phones, wireless LAN, Wi-Fi systems, power lines, electrical installations and appliances, baby monitors and alarms, microwave ovens, cell phones, etc.

Magnetic field (nT)<2.080-120160-200300-400>1000
Electric Field (V/m)<615-2025-3035-40>50
Radiowaves (W/m)
2 3900 depending on frequency
RF Enhanced Mode (W/m)
.06 5900 depending on frequency

Operates for about 10 hours on one 9V battery (included). 2 year warranty.

ESI 24 EMF Monitor (Cat. #A498) .................................. $329.95 add to cart


2.45 GHz Meter for Microwave Ovens

High Precision, Professional Quality

This meter is specially designed for measuring or monitoring RF emissions from microwave ovens reliably. Calibrated specifically for the 2.45 GHz frequency range used by ovens.

Measurement range 0 to 1.999 mW/cm with 0.001 resolution. Built in audible alarm at 1 mW/cm. Best of all, the sensor is located 5 cm (2 inches) from the top of the unit so it completely takes the guesswork out of where to position the meter. Simply touch the top of the meter to the oven door/seal/window and make accurate, repeatable readings. Includes Peak Hold feature to capture the highest reading.

Will also measure 2.45 GHz (50 MHz) frequencies from other analog signal sources. Has residual sensitivity from 30 MHz to 3 GHz so other frequencies can be detected, but for reference only. Requires one 9V battery. 1 year wty.

2.45 GHz Meter for Microwave Ovens (Cat. #A109) ............. $109.95 add to cart


EMF Measurement in the Near Field by Hubert Trzaska

In this book, internationally respected EMF measurement expert Hubert Trzaska discusses the specific problems of EMF measurements in the often confusing near field and the main factors limiting measurement accuracy. Book describes methods that provide accurate data to aid the development of new, improved standards. Measuring methods are examined for electric fields and magnetic fields; measurement discussions include power density and photonic EMF measurements. 232 pages, 2001

EMF Measurement in the Near Field (Cat. #A538) .............. $79.00 add to cart

Near Field RF Probe

Low Cost Solution for Near Field RF Measurements

Near Field Probe Image

To make proper RF measurements up close to a source, you need an excellent quality near field probe. This one is sensitive to magnetic fields from 1 MHz to 6 GHz and has an integrated electrostatic shield. Only 0.11 thick, the probe can be inserted into narrow seams and gaps.

Useful for EMC troubleshooting, field strength measurement, determining the shielding effectiveness of near field shielding, and troubleshooting of RF circuits. Probe is passive, requiring a display instrument (spectrum analyzer, power meter, or oscilloscope) with 50-Ohm input impedance to display the power received from the probe. Probe is single-axis so it responds to fields orthogonal to the loop (i.e. parallel to the stub). 0.15 inch loop diameter for high spatial resolution, probe is 6 inch long.

SMB male connection, 50 ohms. Includes 15 inch cable with BNC male terminal and BNC-to-SMA male adapter. 1 year warranty. Near Field Probe Image

Works well with:

Made in USA Near Field RF Probe (Cat. #A117) ... $149.95 add to cart



Determine Frequency of RF Sources

With RF-id SOLO you can simultaneously and instantly confirm exact frequencies and signal strength of a nearby RF transmitter.

The RF-id SOLO works with both digital and analog single carrier transmissions from 50MHz to 2.5GHz (provided that the transmissions are not spread-spectrum or frequency hopping). Factory calibrated to an amazing 10Hz resolution!

Simple to use, hand-held and perfectly portable, less than 3 x 2 inches. And not just for commercial RFID tag uses! Check wireless microphones, belt pack transmitters, assisted listening devices, wireless intercoms, cell phones, wi-fi and much more. Even hunt for covert listening devices! RF-id SOLO

- RF-id Solo confirms frequency of the signal
- RF-id Solo confirms power output of the transmitter

The RF-id SOLOTM is designed for Near Field measurements only. The input of the RF-id SOLO has been attenuated to a minimum measurement level of -40dbm (1uW) and any signals below this level will not be measured. The RF-id SOLOs maximum input level is +40dbm (10W).

- Dimensions: 3.35" x 1.8" x .85"
- Power: 5 VDC, 1A built-in rechargeable NiMH battery (includes adapter/charger). A fully charged battery will last for approximately 4 continuous hours
- Frequency range: 1MHz 2.6GHz
- LCD: Frequency counter and signal level display

RF-id SOLO (Cat. #A131) ................ $225.00 add to cart

Broadcast Frequency Counter


RF Counter & Field Strength

Want to know the frequency of RF sources? Heres a handy unit thats priced right. The Broadcast Frequency Counter is an excellent economical choice for 2 big reasons: it offers both a frequency counter and bargraph type field strength meter. 7 digit display gives plenty of information about the predominant incoming frequency and the very low (<5 mV) nominal input sensitivity provides stable readings even with smaller injected signals. Covers the entire frequency range of 30 MHz - 2.8 GHz for digital, on/off keying, and analog signals. Telescoping antenna included, but this 50 ohm input unit can also be attached to other antennas or line with BNC connector (maximum input is 15 dBm). Powered by 9 VDC wall plug adapter/charger (included) or 5-hour built-in NiCd battery. 1 yr mfr wty.

Note: The sensitivity for broadcast signals is low. In other words, the broadcast signal must be quite strong to register on the bargraph.

Broadcast Frequency Counter (Cat. #A119D) ... $269.00 add to cart

RF Explorer<SUP></SUP>

RF Explorer

Affordable Spectrum Analysis

We couldnt believe our eyes when we saw what this beauty can do: display frequency spectrum, including carrier and modulated wave, display Spread Spectrum activity if that exists, and show bandwidth to monitor frequency crowding, frequency deviation from expected, etc. RF Explorer

What does that mean? It means you can see what frequencies are present and the strength of each signal. Check cell phones, wi-fi, cordless phones, FM radio, CB radio, and a wide range of other wireless signals. Covers 15MHz-2700MHz (1kHz resolution) with no gaps, and with excellent dynamic range (-115dBm to 0dBm). High capacity Lithium polymer (included) for 16+ hours of continuous run, rechargeable by USB. Peak Max and Hold, Normal, Overwrite and Averaging modes. Can even connect to your PC! (USB cable not included) Lifetime free firmware upgrades. Pocket size and light weight, completely portable, solid aluminum metal case. Two separate inputs and two antennas supplied:

Frequency RangeDynamic RangeAbsolute Max input
Left Input:Up to 960 MHz-115dBm to 0dBm+5dBm
Right Input:Above 960 MHz-110dBm to -10dBm+30dBm

Very sensitive, Avoid over-ranging near strong transmitters. Two year warranty.
Download user manual
Download Software and Drivers for PC connection.

RF Explorer (Cat. #A197) ............... $269.00 add to cart

Exactly how much is a picowatt?

milliWatt = 10-3 Watt
microWatt = 10-6 Watt
nanoWatt = 10-9 Watt
picoWatt = 10-12 Watt
femtoWatt = 10-15 Watt

Continued on next page...

Click Here for even more RF Meters

Can't decide which meter is right for you?
Click here to go to the handy Meter Selection Guide.

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