Single Meter - Single Element, Panel-Mount RF Wattmeter
4521, RF Wattmeter is a single element socket and single meter unit. It's designed for power measurement in CW and FM systems that employ 50-Ohm cable or 7/8" EIA transmission lines. All models include a precision line section and either one or two 3-scale analog which give full-scale direct readings from 100 mW to 10 kW.
The rack panel fits standard 19-inch equipment racks. Plug-In Elements, the same used in the Bird model 43, are sold separately. Depending on the element selected , the 4521 will cover frequencies from 0.45 to 2700 MHz. Measurement accuracy is ±5% of full scale. Forward and reflected power are measured by rotating the element.
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