The 2052WL multipurpose detection system identifies and locates all types of radio frequency (RF) fields and hidden wires. The system consists of the 2052WLR (WLR) detector, rod antenna, antenna extension rods, detector module, dynamic earphone, 2052WLT (WLT) wide-band signal generator and two wire antennas. A rugged foam fitted attache case houses all components of the system.


The WLR is a highly sensitive RF detector operating from the low kilohertz (KHz) range to tens of gigahertz (GHz). The PHONES output supplies either detected amplitude modulated audio or a tone proportional to signal strength. With the TONE/AUDIO switch in the AUDIO position the operator hears demodulated audio and can often separate the usually stronger signals like AM and TV broadcast stations from desired signals. The TONE position assists in quick and accurate location of both the signal from the WLT and unmodulated or narrow and wide-band FM signals. The tone changes pitch in proportion to relative signal strength.

The WLR portion of the system includes two different types of detectors. Quick examination of objects and persons, comparison of antenna effective radiated power (ERP), testing of transmitters, monitoring of relative RF field strength in a room, etc. are done with the rod antenna plugged directly into the main unit. The external detector module plugs into the jack on the end of the WLR and, along with the extension rods, is used to search to ceiling level. The frequency range of this module also exceeds 10 GHz.

Calibrate the unit with the probes disconnected. Set the GAIN switch on MAX and rotate the ZERO control so the meter reads between 0 and the first division. In locations with a strong RF background level, usually caused by TV or AM broadcast stations, the meter reading increases with either probe connected. Audio monitoring effectively separates these strong authorized signals. The headset is worn with the grey tube under the chin. TV signals produce a low pitch buzzing sound caused by the vertical synchronizing signal. A detected microwave signal causes deep differences in the meter reading when moving the probe toward or away from the source. Microwave signals can usually enter the detector even without a probe attached. Reduce the GAIN control if the meter indicates more than 9. NOTE: The extremely sensitive indicator is NOT designed to detect high power signals. Do not directly couple the rod probe or the top portion of the sectional probe to a transmit antenna radiating more than .1 Watt of RF power.


The WLT is a wide-band multi-signal FM and AM signal generator that, with the appropriate antenna attached, activates hidden wires and makes them "visible" to the WLR detector. Antenna principles and NOT the detection of nonlinear components within a suspect device cause this effect. The result is that any wire terminated by any device, even a dynamic microphone, can be found. Connecting the WLT to the source point of a wire, such as the AC power line ground/neutral wire or one side of the telephone line gives the best results.

Start with the short antenna strung directly away from the WLT. Turn ON the WLT and place in the center of the work area. Adjust the WLR for normal operation. Start with the units about ten feet from each other. With the antennas perpendicular to each other, adjust the SENSITIVITY control on the WLR for a reading of 2 to 4. Slowly approach the WLT antenna with the WLR. When the meter goes off scale, reduce the SENSITIVITY accordingly. When the two antennas approach each other the signal strength increases in a logrithmic fashion. Next, move the WLR away from the WLT until the meter reads between 2 and 4 on the - position. Note the distance between the two antennas when this occurs. Now, move the WLT to that distance from the area being searched. Search the ceiling, floor and walls carefully while listening for the signal from the WLT. Approaching any hidden wire or cable with the probe of the WLR causes an increase in the signal and meter level. For an exact determination of a wire route it is sometimes helpful to change the location of WLT and its antenna wire to provide better coupling into the suspected wire.



- Sensitivity - indicates a transmitter with an output level of 5 x 10-6 Watt at 500 MHz
   feeding 1/4 wave antenna from 10 cm distance.
- 5-position rotary GAIN switch (the 6th position is power OFF) controls the sensitivity
   in 10dB steps.
- relative signal strength indication by meter or tone.
- Internal detector 0.1 MHz - 10 GHz+.
- Rod antenna 8 1/4" (210 mm) long.
- External probe 0.1 MHz - 10 GHz+
- Audio output of demodulated AM signal or tone proportional to signal strength.
- Output impedance 100 to 2000 Ohms (2000 ohm headset supplied).
- Power: 9V Alkaline battery.
- Current consumption: 2 mA with no signal.
- Size: 6 1/4" (158 mm) high X 2 1/2" (64 mm) wide X 1 1/2" (38 mm) deep excluding
   jacks and controls.
- Weight: 11 ounces (.35 Kg).


- Multi-signal pulsed AM/FM wide-band generator.
- Audio modulation: 1 kHz, 50% duty cycle.
- Output voltage: 8 V p/p.
- Power: 9V - 6 "C" Alkaline batteries.
- Current consumption: 35 mA.
- Low voltage indicator, indicates when batteries drop below 6 V.
- Multisection Antenna and Antenna wires: 3 foot (1 meter) and 9 foot (3 meters)
- Size: 2 1/4" (58 mm) high X 3" (76 mm) wide X 6 5/8" (168 mm) deep excluding
   jacks and controls.
- Weight: 1 1/4 pounds (.58 Kg).

As with any piece of electronic equipment, remove the batteries during periods of prolonged storage.


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