The ZAP ONE is a new generation countermeasures RF sweeper 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 ZAP One allows the user to detect and measure signal strength and to distinguish between analogue 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 analogue 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 analogue meter and coloured LightEmitting Diode (LED) displays. The LED display produces better readability from a distance and in dim light.

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 signal

GETTING TO KNOW THE ZAP CHECKER ONE

1. METER DISPLAY
The analogue meter gives a reading of radio frequency signal strength. It provides a clearer visual display of rapid signal changes than other types of displays.

2. LEDs
Two Light Emitting Diodes (LEDs) are used to give a signal strength indication for viewing at a distance or in low light conditions. The LED display directly correlates with the analogue meter readings. The green LED illuminates brightly with little or no meter reading and progressively dims as the meter reading becomes stronger. The red LED begins to illuminate at moderate meter readings and progressively gets brighter at stronger signal levels.

3. SILENT VIBRATOR SWITCH
The silent-vibrator switch turns the silent vibrator mode ON or OFF.

4. LOG-MID-LINEAR SWITCH
In the LOG (logarithmic) mode the detector senses a large dynamic range of signal strengths. It excels at pinpointing the location of signal sources without overloading the ZC 185 measurements. In the LINEAR mode the detector is at its most sensitive operating mode, allowing it to detect weak signals at a far distance.

The MID (middle) mode is a combination of LOG and LINEAR modes allowing the instrument to detect moderate RF signals with an expanded dynamic range of signal strengths.

5. OFF-SENSITIVITY CONTROL
The ON-OFF switch for the instrument is coupled with the SENSITIVITY control. The sensitivity control adjusts the amplification of the ZC 185 over a 10 to 1 signal range (20dB).

6. ANALOGUE – DIGITAL SWITCH
Continuous Radio Frequency signals are detected in the analogue mode. The digital mode is used when the transmitting device is broadcasting digital or rapidly pulsed analogue signals. Digital signals are distinguished from analogue signals when measurements in the digital mode are noted to be stronger than in the analogue mode.

7. BATTERY COMPARTMENT
The rear battery door allows access to the battery compartment that holds two (2) AA batteries. Alkaline batteries are recommended. (Rechargeable batteries do not work).

8. FREE – STANDING DESIGN
The flattened bottom enables the instrument to be placed upright on its end allowing the meter display and LED displays to be visible from a distance.

A. INITIAL SETTINGS

Initial conditions of the ZC 185 should be with the LOG-LINEAR switch in the LINEAR mode, the vibrator switch turned OFF, and the analogue-digital switch in the digital position. Turn on the ZC 185 by rotating the OFF-SENSITIVITY control to the right.

B. SETTING THE BASELINE, AMBIENT SIGNAL LEVEL

Initially switch to the LINEAR mode for long distance detection of weak RF signals.
Rotate the OFF-SENSITIVITY control from low to high to adjust the sensitivity of the instrument so that the ambient, baseline RF signal level reads between 10 to 40 on the meter scale. This is a measure of the baseline signal level at that particular location.

C. USING THE DIFFERENT AMPLIFICATION MODES

A detected weak signals will present as an increase above the ambient signal level reading in the LINEAR mode. The far-away weakest signals are detected here.
The MID mode is used for detection and measurement of moderate signal levels.
Switch to LOG mode for localizing and pinpointing the signal source when the transmitted signal reading is too high on the meter scale in the LINEAR and MID modes. The signal source is localized exactly in the LOG mode without overwhelming the meter capabilities.

D. LOCALIZATION

Generally, to determine the location of a transmitting device, move in the direction which increases the signal strength on the ZC 185. As the signal strength increases and the meter reading becomes maximized, switch from LINEAR to MID mode and finally to LOG mode to get to a readable part of the meter scale. The highest reading in the LOG mode is just adjacent to the signal source.

E. SILENT VIBRATOR MODE

The silent vibrator is used when it is difficult to view the displays or when it is desirable not to be noticed when monitoring the RF signal strength. Once a threshold level is exceeded the vibrator turns on and operates in a pulsating manner. The strength of the vibrations increases with an increase in RF field strength, making it easier to locate the signal source without viewing the display.

F. ANALOGUE – DIGITAL MODES

A continuous broadcasting signal can be measured in either the analogue or digital modes. When the signal is digital (i.e., it is pulsed on and off at a rapid rate), it gives a relatively low reading in the analogue mode, but measures accurately higher in the digital mode. This is due to the pulsing of the RF signal. If the signal is rapidly pulsed on and off, the meter display will register an average signal reading of the on and off pulse times in the analogue mode. In digital mode the pulses are detected as peak-signals which register a higher reading than the average of on and off pulses measured in the analogue mode.

£207.00 UK/$207.00 US