MicroAlert is an alarm that you wear like a pager that will alert you to the presence of radiofrequency and microwave radiation. The MicroAlert is important protection for all pacemaker users, those sensitive to RF radiation from TV or cell phone broadcasts, or anyone who lives or works in the presence of microwave or RF hazards. Can even be used to detect audio and video transmission from concealed bugs or the unauthorized use of cellular phones!
MicroAlert will respond to as little as 0.1 µW/cm˛ in highest sensitivity mode. When MicroAlert is moved closer to the source of RF radiation, the chirps will become more frequent, and will become a solid tone when exposure is high. Responds to frequencies from 500 kHz to 3 GHz, although response is not flat over this range. What this means is that at any given setting, the threshold will vary with frequency. Note: This is not a high precision meter. Sensitivity information is only a guideline.
The beeping alarm threshold can be adjusted from no threshold (constant beeping regardless of radiation exposure), to to a maximum of about 10 microWatts/cm˛. It is intended to be an alarm for cell phones, cell towers, microwave ovens, surveillance bugs, and most RF transmitters.
Only 1-5/8" x 2-1/4", the 1 oz. MicroAlert uses one Lithium coin cell #2032 which should last about 3 years with normal use. Includes convenient belt clip. 1 year mfr. warrantee.
This is one sensitive puppy! Designed to sniff out even the tiniest RF transmitter, it will catch everything from 1-2500 MHz. Analog readout on a relative scale makes direction finding fast and easy. Simply hold the unit horizontally and point the built-in telescoping antenna in the direction of the suspected source. Sweep 360° to find what other RF sources may be present. Can differentiate between distance sources such as towers and nearby sources such as surveillance bugs and cell phones. Adjust gain with the length of the antenna and the sensitivity adjustment control. Complete with instructions and 9V battery. Made in USA. Great price too!
Light beams, especially lasers, provide an excellent method for carrying audio intelligence and are not detectable by ordinary RF (radio frequency) detectors. For those who need either a very sensitive RF detector or an infrared (IR) detector this unique item allows you to search for sources of either RF or infrared transmissions.
With its bandwidth of 1 MHz to 2500 MHz and its extra sensitive circuitry, it will pick up signals that other detectors may miss. It is designed to pick up subminiature radio and infrared transmitters wherever they are located - in your home, office or car. To change from RF to IR detection, simply use the convenient front panel switch.
Using the SENSITIVITY control and meter readings, you can quickly zero in on hidden RF and IR transmitters. Also use it to check your telephone and its associated wiring for RF bugs and taps. Can even be used to test your IR remote devices (TV remotes, etc.). Spectral Peak at 940 nm.
Weighing only 8 oz., it is furnished in a high-impact case that measures 5.3" x 3.3" x 1.5". The telescoping whip antenna can be extended 33". The unit comes complete with 9 volt battery, antenna and instructions.
Want to know the frequency of RF sources such as cell towers, TV and radio stations? Here's a handy unit that's 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 to 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.
Measuring radio frequency and microwave radiation has never been easier! This unit covers the amazing range of DC - 12 GHz and will give you digital readout of the relative field strength of broadcast signals such as cellular phone, microwave oven leakage, TV station, CB radios using the (1MHz - 1GHz) telescoping antenna provided. Can also be used to measure 60 Hz electric field signal from powerlines and wiring. Even use it as an RF safety monitor! Adjusting the length of the antenna will affect the signal gain. Other antennas (not included) can be obtained for extended frequency ranges.
Can also be used to make relative power measurements (and determine power loss) of single frequency coaxial sources such as cable TV, and with simple adapters, this meter may also be connected directly to any receiving antenna to measure signal strength while the antenna is tuned, modified or repositioned.
Includes an ACV output (3.5 mm mono) which allows user to log spectrum/intensity data to a remote device.
Large 3˝ digit LCD readout is easy to see. Only 3" x 4" x 1˝" and weighs less than a pound, this is good value for checking high frequency radiation sources, tuning or modifying broadcast antennas, or testing the effectiveness of your RF shielding. Powered by a standard 9V battery which is included. 1 year mfr. warranty. Made in USA.
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In addition to measuring changes in extremely weak static (DC or "natural") electric and magnetic fields, the NATURAL EM METER gives a readout of radio/microwave signal strength in mW/cm˛ and has and audible alarm. The threshold of the alarm can be set at any level from 0.01 mW/cm˛ to 1 mW/cm˛. Using both a needle type meter and audible tone, it detects: radio transmitters, geomagnetic storms, unusual magnetic solar activity, electrical activity of thunderstorms, leaky microwave ovens, magnetized rocks or bed frames, analog cellular phone EMF output, and concealed surveillance bugs. Perfect low cost RF alarm for those working near RF equipment and antennas. RF sensitive down to 0.01 mW/cm˛, with a full needle deflection at 1 mW/cm˛ over the frequency range of 100 kHz to 2.5 GHz. 9v battery included. One year manufacturer's warrantee.
Need an RF signal to test your RF meter? Check your RF shield design or effectiveness? Perform RF experiments? This simple device with built-in 4-section telescoping antenna produces a nice 49-50 MHz signal. Built as a remote control for a toy car so it also features two spring-return joysticks for "speed" and "direction". Has on/off slide switch, and requires one 9V battery. Cheap, too!
Make some waves! Need a source of 20 Hz to 150 kHz frequencies? Handy little unit fits in your shirt pocket and is very simple to operate. Produces nice clean sine waves (adjustable intensity up to 1.2V rms) or square waves (p to 8V p-p) with 5% frequency accuracy. Simply dial in the desired frequency. Uses 9V battery (50 hrs typical use). Includes low battery indicator, test leads and 9V battery.
Check the response of your gaussmeter to various frequencies (connect the Frequency Generator to the Degaussing Coil to generate several mG fields at various frequencies), test your frequency counter, connect to a speaker/headphones to test your hearing range! Also great for field/bench service of audio equipment, car stereo, etc. Bargain price!
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