The NS-660/660P is a high quality instrument with unique features which make tedious measurements of SWR and Power during antenna tests, matching and tuning of transmitters a very easy task. SWR and Power indicators are installed in one meter unit. One scale will indicate Forward Power, another scale Reflected Power and SWR is indicated at the crossing point of the 2 needles. This unique feature makes it possible to read Forward Power, Reflected Power and SWR all at the same time. The meter unit has built-in illumination which provides improved readability. In addition to the built-in RF power sensor, an optional remote sensor can be used via EXT Sensor socket on the rear panel. The NS-660P can also measure PEP Peak Power in SSB operation.