Radio Stations Use Compressed Air ???

Because of the High Power we send through the hollow copper 'Coaxial'Lines, we need to insure moisture will never seep into them.

Copper Plumbing

If moisture DID get in, we'd have arcing, burning, and the copper pipes could melt in a matter of seconds.

We use a special air compressor for this; called a dehydrator, it takes normal air from the room, drys it out, and then pumps it into the hollow lines at low pressure.

Each one of the hollow lines is fed through its own port on the output manifold. We usually keep between 3 and 6 pounds of pressure on each line. This makes sure the inside of the line stays dry and free of any moisture.

Pressure Gauge

Line Pressure as read at the Studio

Line Pressure as read at the Transmitter Site

The amount of pressure is measured and sent back to the studio so we can keep an eye on it. Shortly after the new plant went on the air, a 'gas barrier' at the end of one of the lines burst. We found this when the pressure suddenly read '0'..., rather than the expected 3-6 lbs.

Needless to say, no time was wasted repairing the problem. Even while the line was leaking, the dehydrator kept pumping dry air into the system, keeping the moisture out.

Copyright 2005 by Vital Sounds - ALL RIGHTS RESERVED