Let Sherlock Investigations specialists sweep your home, business, vehicle, or cell phone for electronic eavesdropping devices. Our expert technical services team has the experience and the equipment to seek out and dismantle bugs-the only thing we do. We offer a free consultation by phone or email.
Using state-of-the-art electronic countermeasures equipment, applied trade-craft, and a thorough physical search, Sherlock’s experts will sweep the entire radio spectrum for clandestine transmitters, hidden microphones, wireless video cameras, voice recorders, and phone taps. We use the same equipment as the U.S. government. If electronic devices have been placed in your home, office, business, or vehicle, Sherlock Investigations Technical Division will locate them and neutralize them.
Offices, Conference Rooms, Businesses
The basic sweep is identical to our more expensive sweep, except that it doesn’t use a spectrum analyzer. If there are eavesdropping devices present, this sweep will discover it. Normally, we do not use a spectrum analyzer as it takes many hours, incurring unnecessary additional costs for our clients. A spectrum analyzer analyzes virtually EVERY radio transmission in the area, including the many commercial radio and television stations, police radios, aircraft, taxis, cell phones, as well as eavesdropping devices. Also, spectrum analyzers cannot detect recorders, microphones, anything hardwired, fiber optics, passive resonators, and inactive remote-controlled dormant devices.
The following is included in EVERY SWEEP:
Total RF (radio frequency) spectrum sweep – 10 Hz to 24 GHz.
Telephone sweep (we perform three electronic tests and visually inspect each phone)
Carrier current sweep – 20 KHz to 400 KHz (the building wiring)
Infrared transmission sweep
Laser beam transmission sweep
Microwave transmission sweep
Cell phone bug sweep (a cell phone used as a bug)
Hidden video camera sweep (both wireless and hardwired)
Audio recorder sweep
Acoustic leakage inspection (where applicable)
How We Sweep An Office
First, we test POTS/Analog/Digital phones for possible wiretaps. We run several different physical and electronic tests, and follow all phone lines, as well as visually inspect each phone. We also inspect where the phone lines enter the premise via a telephone closet or IT room.
Usually, “bugs” are found within 20 feet of where conversations occur.
We employ several broadband/nearfield receivers with many antennas (different frequencies use different antennas) and use an OSCOR GREEN 24Ghz with a range of 10 Hz to 24 GHz, and several advanced cell phone detectors. Cell phones are the “bug” of choice these days. Like voice-activated recorders, they can be easily hidden. Unlike recorders, which have to be retrieved, cell phones can be called from anywhere in the world. The bell does not ring, and the caller can eavesdrop on conversations in the room where they have been placed.
We check the building’s electrical wiring. Called “carrier current” it ranges from 20 KHz to 400 KHz. We check anything that has electrical current, from calculators, smoke detectors, thermostats, extension cords, lamps, and wall outlets.
We check for everything in an office: including infrared transmissions, laser beam transmissions, and microwave transmissions.
We can literally hear through most walls. In some offices walls are checked for acoustic leakage (popular, but low-tech). Depending on how large the premises is, an electronic sweep takes about two to three hours. A one-room small office can take as little as an hour. A large office can take much longer.
We’ll also conduct a thorough physical search of your premises. Research Electronics International, a leading manufacturer of counter-surveillance equipment and one of the foremost training facilities for Technical Surveillance Counter-Measures, says, “A physical search is the root of all counter-surveillance work. It also overlaps other procedures. Be thorough and look closely for anything suspicious. Your physical search may be the only method to uncover wired microphones, fiber optic microphones, passive resonators, inactive remote controlled ‘dormant’ devices, or devices which are not generally detectable with counter-surveillance equipment.”
Just because a person or agency promotes bug sweeps on their website it doesn’t mean they either have the right equipment, training or experience. Most professional TSCM technicians use more than $150,000 worth of sophisticated electronic bug detection equipment. That’s why you need to know what questions to ask to identify true professional TSCM technicians and weed out private investigators with spy shop gear.