The model 2640 is a battery operated, hand held RF Field Strength Meter with a measurable frequency range of 100kHz to 2000MHz. It is optimized to analyze signals from many different sources for multiple applications. The characteristic of frequency response of the B&K Precision 2640 is calculated by memorized calculation data from a "look up table", and so it enables the 2640 to measure accurate levels and makes easy analysis of a wide range of frequency bands.
Although, the other project, PM3 and FC3 are hot favorite among radio amateurs for RF Measurement, I wanted something smaller & more economical for measurement of RF Signals accurately using an LED Driver LM3914 and Log amplifier AD8307.
The R-506 expands the Z Technology product line of cost effective test instrumentation with a rugged portable unit designed for the professional user. Accurate NIST traceable field strength measurement of RF signals.
The FSM1 is a lightweight, battery operated, field strength meter. This unit is ideal for making signal test measurements of all standard broadcast (VHF and UHF) and CATV channel assignments. Visual or aural carrier level, and aural verification (using built-in speaker) measurements are available.
This range consists of thirteen models covering the 20 MHz to 3 GHz frequency range. Each model covers a 100 MHz bandwidth. This meter range has the advantage of being able to operate with some digital signals such as GSM Cellular signals. Measure the strength of a RF signal appearing at its input from +20 dBm to -110 dBm for wide bandwidth models and +10 dBm to -120 dBm for narrow bandwidth models.