This is the worlds most popular and most affordable VHF SWR/Wattmeter.
It has a built-in Field strength Meter.
Reads 144-220 MHz SWR
Read forward and reflected power in 2 ranges - 30 or 300 Watts.
MFJ-812B also reads relative field strength from 1 to 220 MHz.
Has binding post for field strength antenna.
2 color meter.
Measures a super compact 4.5 x 2.25 x 3 inches.
Download Product Manual