Bug Detector / RF Signal Detector
Bug detectors pick up radio frequencies from all around your home or
office. Since they respond to any wireless device, sweeping for bugs
can be somewhat time consuming and difficult, but it’s well worth
the time to know if someone is spying on you. Being able to sweep
your office or house for bugs can be very helpful if you have a
high-risk job (like working with a government agency) or are in the
middle of a lawsuit. What you say over the phone or in the presumed
privacy of your home could be evidence against you if it fell into
the wrong hands.
With RF signal detectors, you can protect private conversations by
making sure there are no bugs in your walls or taps on your phones.
Use bug detectors to see if your phone, computer or home is bugged
with hidden cameras, wireless transmitters, or GPS trackers. Bug
detectors can provide light, audible or vibration responses to radio
frequencies to let you know you might be onto something. Because bug
detectors pick up any radio frequency, you’ll have to rule out
anything within its range, including cell phones, laptops and any
other device that gives off between 50 megahertz (MHz) to 6
gigahertz (GHz). On the low end of the spectrum, a good bug detector
will be able to pick up voice transmitters around 50 MHz and
continue up the scale to wireless cameras, but this wide range of
frequency is common among a lot of everyday items. You’ll also have
to think about your neighbors and the modems and receivers they’re
using while you’re sweeping your home or office with a bug detector.
To begin the process, turn off all of your wireless devices. With
your modem, your cell phone, and other devices off, you’d think that
whatever else you find would be cause for concern but not so fast.
Interference of other radio frequencies around you can be picked up
by the bug detector, too, including frequencies from microwaves,
televisions and even power lines.
If you’re doing this yourself, it may be difficult to know if you’ve
found a bug or not. Bug detectors don’t just hone in on bugs, they
hone in on radio frequencies. This is why bug detection should be
left up to the professionals. Rather than opening holes in the wall
all over your house, professionals know some common areas where
hidden devices are usually placed and where you’re least likely to
A qualified technical security expert will be better able to discern
a true bug’s frequency from normal interference and identify any and
all weaknesses in your home security or that of your office or
business. The sweeps that the professionals do is much more in depth
than anything you could do on your own without proper training and
certification. These sweeps include a full electronic search of the
spectrum of radio frequency, and a search in walls, ceilings,
furnishings and elsewhere for active and dormant recorders,
transmitters or microphones.
If you’re going to do this bug detection yourself, you might want to
check the exterior as well as interior features of your home, such
as crawl spaces and ventilation and plumbing systems for evidence of
eavesdropping, like smears or footprints in dust. Of course, as this
assessment is being done (by you or a professional team), you should
have important conversations face to face or in writing and in a
surely secure location.