. Electronic navigational aids; loran, radiobeacon, and radarbeacon systems and loran, radio-direction-finder, and radar ship equipment. Loran; Radar. 36 OCEAN ELECTRONIC NAVIGATIONAL AIDS. I'iGUKE 3-2.—Views of Kadar reflector-equipped buoys. tially a continuously pulsing microwave transmitter at some known location. It may be picked up by any navigational Radar whose receiver is capable of being retuned slightly to the established beacon frequency, as the Ramark frequency differs slightly from that of the normal search frequency. When the navigator's Radar receiver is so tuned, the Ramark ap
. Electronic navigational aids; loran, radiobeacon, and radarbeacon systems and loran, radio-direction-finder, and radar ship equipment. Loran; Radar. 36 OCEAN ELECTRONIC NAVIGATIONAL AIDS. I'iGUKE 3-2.—Views of Kadar reflector-equipped buoys. tially a continuously pulsing microwave transmitter at some known location. It may be picked up by any navigational Radar whose receiver is capable of being retuned slightly to the established beacon frequency, as the Ramark frequency differs slightly from that of the normal search frequency. When the navigator's Radar receiver is so tuned, the Ramark appears as a con- tinuous azimuth line on the Radar scope, while reflections from objects are obliterated from it. (See fig. 3-4.) Also, this beacon may be utilized by vessels having only a microwave receiver and directional antenna. At the recent ITU conference in Atlantic City, Radar beacon frequencies of 3256 megacycles (S-band) and 9310 megacycles (X-band) were allo- cated. These frequencies differ from the normal search frequencies in these. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Coast Guard. Washington, U. S. Govt. Print. Off.
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