Califone POWERPRO PA916 - Manual (Page 6)

Wireless Operation
Feedback is a shrill screeching sound produced by the speaker system when a microphone is being used too close to the
front of the speaker. The microphone picks up the sound of the speaker system and it becomes reamplified. It is a self-
sustaining loop which can damage the system if allowed to continue, not to mention the annoyance caused to persons
nearby. Always stand 4 to 6 feet from the speaker to minimize the opportunity for feedback from the speaker system.
Wireless UHF Receivers
Wireless receiver “A” is preset at the factory for channel 4 and
receiver “B” is set on channel 6. There are three (3) LEDs on the
receiver; power (green), RF reception (red) and Audio reception
(amber).
There are also LEDs on the front of the speaker above the grille
making it easy to see if the microphone and receiver are work-
ing properly. A red LED indicates RF (radio frequency) from the
microphone, while an amber LED indicates audio.
Wireless Transmitter
The PowerPro PA916 incorporates a 16 channel UHF transmitter with its own power switch for wireless transmission to
the Powered Companion Speakers PA916-SP. The transmitter is preset at the factory to channel 13. It is recommended
that the user not randomly change this setting. If using the transmitter function change wireless receiver “A” from chan-
nel 1 to any other channel except channel 13 to prevent the transmitter from blocking the receiver.
Microphone Lockout
Two wireless microphones can be used at the same time, but separate channels (frequencies) must be used. For instance,
if using receiver “A” on channel 4, two microphone beltpack transmitters cannot be used at the same time. The first
transmitter turned on will dominate and lock out the other. The second microphone should be used with receiver “B” on
a different frequency which will allow two persons to talk at the same time.
Turn the transmitter power switch to OFF when not being used to minimize battery drain.
5
UHF FULL DIVERSITY