Whether you’re tracking a moose, trying to locate a sinking ship, or conducting a little spying, you’re going to be using a field strength logger. One of the slickest units currently available is the WiNRADiO PFSL-G3 Portable Field Strength Logging and Surveillance System. Whereas such systems used to consist of several pieces of equipment, the PFSL-G3 is all contained in one portable, compact, rugged unit. It also now comes with an optional TETRA control protocol decoder, allowing users to prioritize signal traffic by importance.

The PFSL-G3 includes a wide-band HF/VHF/UHF calibrated receiver for measuring and logging signal strength, coupled with a GPS receiver for storing and displaying geographical coordinates. The logging intervals can either be timed or event-driven, and the logging fields and data format are user-definable, making the data readily available for further processing. Signal levels can be measured in a variety of formats, and shown as instantaneous, peak, or average values. The logged data includes time, date, latitude, longitude and altitude. If you’re the type of person who would be in the market for one of these systems, all that information will mean something to you. If you’re not, don’t worry about it.

The system consists of the control computer, receiver, and rechargeable battery. It can be powered by its own internal battery, an automotive DC power supply, or AC mains power. Signal processing, demodulation and recording utilities are included in its software package. WiNRADiO also offers a range of configurable multi-channel receiver systems, designed for surveillance, monitoring, and logging.

Systems like the PFSL-G3 are typically used by emergency service providers, communications providers, public safety, civil security, law enforcement and defense authorities. Next time you’re lost in the woods with your cell phone, you’ll be glad they were invented.

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