The 10H3.5CTWR187 horn antenna operates from 3.95–5.85 GHz with 10 dB gain and a maximum VSWR of 1.32, featuring an integrated 3.5 mm coax-to-WR187 adapter in a compact design. Equipped with an FDP48 (UBR48) flange and supporting 50 W CW / 3 kW peak power, it is ideal for high-performance microwave systems and precision measurement environments.