Nissei TX-502

The Nissei TX-502 SWR and Wattmeter is an advanced RF meter designed for maximum accuracy when measuring Forward Power, Reverse Power and VSWR. Featuring an impressive 104mm cross needle gauge, this meter provides direct and simultaneous readings of FWD and REV power, as well as SWR, making it ideal for both amateur and professional radio users.

The TX-502 stands out with its many innovative features rarely found in meters in this price range. The DC-grounded antenna connection prevents electrostatic build-up, while the True Directional Coupler ensures increased accuracy over a wide frequency range. In addition, the low bias Schottky diode detectors are integrated for improved linearity, contributing to an even more accurate measurement.

Thanks to the precision meter with individual scales for each power range, the readings become even more accurate. The three-color scale and LED backlight improve the readability, even in low light conditions. The robust metal housing, finished in speckled black with a stylish gray front panel, fits perfectly with modern transceivers and adds an aesthetic value to your radio station.

The Nissei TX-502 offers a wide frequency range of 1.6 MHz to 525 MHz , with power ratings of 2W, 20W, and 200W . It is center calibrated at 28.5 MHz, 145 MHz, and 435 MHz , and provides an accuracy of ±10% of full scale or better. The meter has a minimum power requirement of only 1W and a low insertion loss of less than 1.2:1.