The 15H3.5CTWR137 horn antenna operates from 5.85–8.2 GHz with 15 dB gain and a maximum VSWR of 1.26, featuring an integrated 3.5 mm coax-to-WR137 adapter in a compact design. Equipped with an FDP70 (UBR70) flange and supporting 50 W CW / 3 kW peak power, it is ideal for high-performance microwave systems and precision measurement environments.