MFJ-818, SWR/WATTMETER, MOBILE, HF, 300W 5809H 80 and 40 meters can

80 and 40 meters can even be tuned from the ground without having to lower the antenna

The "Vibration Pick-up Microphone" element is a Piezoelectric Accelerometer Microphone with impedance of 4

measures AC 130 to 300V

Has near constant amplitude phase control

AC Adapter

MFJ-818, SWR/WATTMETER, MOBILE, HF, 300W 5809H 80 and 40 meters canMFJs new flat, compact SWR Wattmeter is plenty rugged to take the abuse of brutal mobile and portable operation. The meter is fully enclosed in a strong aluminum case with just the scales exposed. Only two small switches are slightly protruding so theres little to break. Simultaneously read SWR forward reflected power on full size 3 inch lighted Cross Needle Meter. Use 12 VDC for meter lamp or plug into cigarette lighter with MFJ 5510. 30 300 Watt