COMTEK BST-25 - Manual (Page 7)

If you are using this transmitter in a area which does not have a
TV station operating on channel 5, you can use one of the channels
in the TV 5 range. Conversely, if the area does not have a station
on TV 6, you can operate on one of the TV 6 channels. Note: It is
unlawful to operate this transmitter in a band that is already
occupied by a TV station. After you have determined the channel
on which you are going to operate, use the “TUNING” button to
select the channel that you have chosen. See charts on pages 10
and 11 for preset selectable frequencies.
Multiple Channel Operation
Simultaneous operation of more than two channels requires
coordination of the frequencies that are used to avoid
intermodulation interference. To avoid this type of interference,
select frequencies from one of the standard groups (see frequency
group charts on page 11), or use COMTEK’s frequency selection
guide software to determine appropriate frequencies.
Contact COMTEK to obtain a free copy of the frequency
selection software or download it off the web at
www.comtek.com/frequency.html
Test Tone
The BST-25 base station transmitter has an internal 400 Hz source
which is transmitted when the “TONE” switch is enabled.
This source is intended to be used to make technical adjustments
and to verify the operation of the system. Under normal
operation the “TONE” switch should be disabled.
OPERATING INSTRUCTIONS
(continued)
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