The Main KIIS-FM antenna is a Jampro JSCP-2DA mounted at the 220' top of a monotubular pole. This height, combined with the pole's location on the very forward edge of Mt. Wilson, gives us exemplary coverage over the L.A. Basin.
Another JSCP-2, mounted down on the pole, allows us to switch antennas and transmitters without any disruption in the air signal.

KIIS uses an RCA BTF-10E1, and a Nautel FM-10. Each is connected to a separate antenna through a separate feedline.
Because the transmitters throttle down so far in power, we can 'segue' between them for cleaning. And the switch is inaudible on the air, so we get to do housekeeping at 10 AM on Thursday mornings !

The Stereo Signal gets to Mt. Wilson either on a T-1 phone line using a QEI Cat-Link, or on a conventional Moseley PCL-606C system. The microwave antenna loft is on the top floor of the building, and is behind orange fibreglass panels, This keeps the weather out, while still allowing the signal to get through.

The color of the sunlight filtering through the panels makes the room full of bright orange sunshine.

This is one of two tubes the RCA transmitter uses.. The 'final', or the last tube to boost the signal before it goes to the antenna, it weighs about 15 pounds and costs about $ 2,500 new. Rather than buy NEW tubes, KIIS recycles the old ones. When they reach the end of their life (as this one has), they're disassembled, rebuilt, and then put on the shelf until we need them again. This saves money, and keeps dangerous metals and poisonous compunds out of landfills.

Nostalgia Time: Remember this venerable and oh-so-popular Stereo Audio Processor. This was the 'state of-the-Art' in 1970.

Wow - Have WE come a long ways !!

Copyright 2005 by Vital Sounds - ALL RIGHTS RESERVED