Check the listing for details. Pacific Crest C02549 ADL Antenna 450-470 MHz For Surveying And More.. Condition: New. Listed at 64.99 USD. The plastic on some of these have deteriorated and it looks like they’ve been opened, but nothing has been used. Pacific Crest 18-inch (46cm) elevated feed antenna, 450-470MHz unity gain with NMO connector. The Pacific Crest C02549 ADL Antenna is a high-quality antenna designed for surveying and other radio communication applications. With a frequency range of 450-470 MHz, this antenna provides reliable and efficient signal transmission and reception. Manufactured by Pacific Crest, a trusted brand in the industry, this model is specifically designed for precision and performance in various radio communication systems. Perfect for professionals in surveying, construction, or any other field that requires accurate and reliable radio communication.