>In fact, it's normal these days that when you see banks of cell antennas on >each side of a structure, each bank feeds a different bank of tx/rx; in >other words, each bank is a different cell site.
They are called "sectors". Out here in LA, sites consist of 2, 3 or 4 sectors. On PCS 1950, each sector has 2 antennas. They use both for diversity receive. Only one is used for transmit at a time. The new ones are dual polarity, slant left and slant right. And I have seen several postings about taking a 6 dB hit in receiver sensitivity when combining antennas into a common receiver. Not true. The 6dB figure only works when splitting, not combining. Assuming the phase angles are close, you only get resistive losses through the device. td wb6mie _________________________________________________________________ Get live scores and news about your team: Add the Live.com Football Page http://www.live.com/?addtemplate=football
