This is the world's most popular and most affordable VHF SWR/Wattmeter. It has a built-in Field Strength Meter, and it covers 144 and 220 MHz.
Read forward and reflected power in 2 ranges - 30 or 300 Watts. The MFJ-812B also reads relative field strength from 1 to 220 MHz. Has binding post for field strength antenna. Two color meter. Measures a super compact 4.5x2.25x3 inches.
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