Zap Checker RF Detector 185

The ZC 185 is a quality instrument that detects and displays RF (Radio Frequency) signal levels with uniquely high sensitivity, similar to a broadband receiver. It provides Linear and Logarithmic measurements of RF signals over a broad span of frequencies. The ZC 185 allows the user to detect and measure signal strength and to distinguish between analog and digital transmissions.

FEATURES

Simultaneous detection of RF transmitted signals over a wide spectrum of frequencies spanning from 3 MHz to over 5 GHz, including cellular phones and wireless phones, FM, TV and short wave broadcasts, computer wireless devices, wireless security systems, microwave ovens, ham radio, police and service bands, and transmitting surveillance and spying devices such as hidden cameras, transmitting bugs and covert video or data transmissions.

Very high sensitivity with the ability to detect signals from wireless devices, cellular phones and covert “bugs” at more than 50+ feet, transmissions from “sealed” microwave ovens at 40+ feet, from walkie-talkies at 100+ feet, and from amateur radio transceivers at hundreds of feet.

Detection and differentiation between analog RF signals and digital transmissions. Enhances the detection of cell phones, wireless phones and computer wireless signals.

Wide dynamic range display in the LOG (logarithmic) mode covering a 1000 to 1 input signal range, as well as a highly sensitive LINEAR mode where only the weak signals are examined. A MID mode is used for detection and measurement of intermediately strong RF signals.

Input signal strengths in the LOG mode, MID mode, and LINEAR mode are adjustable by using a sensitivity controller. 6) RF field strengths displayed on both an analog meter and colored Light-Emitting Diode (LED) displays. The LED display produces better readability from a distance and in dim light such as nighttime.

A silent vibrator mode allowing the instrument to be used to detect radiated RF signals (as from a hidden camera or body “bugs”) without being observed. The silent vibrator mode is independently switched ON or OFF.

Fixed internal antennas which do not require any adjustments and give repeatable signals.

DISCLAIMER:
The Zap Checkers are so sensitive they pick up ambient signals that are practically everywhere.

To absolutely locate a signal source, you need to use two or all three of the sensitivity modes. First you pick up the suspected signal using either the most sensitive Linear mode or the moderately sensitive Mid mode. Then, as you approach the signal source, and the signal registers higher and higher strength level, you switch to the Log mode. As you approach the source, the level of the meter in the Log mode will go up until it reaches an apex, and then it will start going lower. The apex of the signal is at a position where you are closest to the source (but not necessarily just physically above the source).

By testing in different directions, you can pick up the strongest Log signal level that should correspond to the actual site of the source. There it should be obvious on the Zap Checker that you can pass from a distance to the source and the signal level rises and goes away from the source and the signal level falls. This requires some training and honing of skills, but can be easily practiced using common signal sources such as 2.4Ghz wireless phones or some wireless computer devices.