11. He used waveguides, horn antennas , dielectric lenses, various polarisers and even semiconductors at frequencies as high as 60 GHz;. 12. The WHJM transmitter is located to the north in nearby Hogg horn antennas removed prior to WHJM's 2006 sign-on .) 13. Bell Laboratory engineers designed a large horizontal conical horn antenna with a parabolic reflector at its mouth that re-directed the beam. 14. The Dnepr involved the horn antenna being reduced from 20 to 14 metres in height and the addition of a polarising filter 15. Tuba used a horn antenna built of mesh wire 150 feet long and driven through 22-by 6-inch waveguides, possibly the largest ever built. 16. The "'Holmdel Horn Antenna "'is a large microwave horn antenna that was used as a radio telescope during the 1960s at Robert Wilson. 17. The "'Holmdel Horn Antenna "'is a large microwave horn antenna that was used as a radio telescope during the 1960s at Robert Wilson. 18. The low gain horn antenna is located under the center of the probe because of an adapter that connected the probe to the launch vehicle. 19. He invented a horn antenna and hit on the idea of using a hollow pipe as a feedline to feed radio waves to the antenna. 20. A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a UHF and microwave frequencies, above 300 MHz.
