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W1 140W Computing Wattmeter and SWR Bridge
The Elecraft W1 is a versatile RF power and SWR meter than can be used with any transmitter from QRP levels to 140 watts output from 1.8 to 30 MHz. The W1 automatically selects the proper power range of up to 1.4, 14 or 140 watts and indicates the peak forward power and SWR on built in LEDs. The power and SWR is also available through a connector as RS232 serial data for display on a computer or to control other equipment.
The W1 Power meter is designed to be used as a stand-alone unit that may be powered from a self-contained battery or an external power source. Optionally, it may be built into existing equipment or an enclosure of your choice. See Assembly Options on page 3 for more information.
The W1 uses no surface-mount technology, so it’s an ideal project for first-time builders.