COMTEK PR-216 76-88 - Manual (Page 5)

Page 4
PR-216 / TV 5-6 OPERATING INSTRUCTIONS
Frequency Selection (TV channels 5 and 6)
The PR-216 personal receiver has the ability to operate on one of 112 preset
channels between 76.200 MHz and 87.4 MHz (TV channel 5 and TV channel 6).
Channels are designated by both frequency and channel
number. Channels which operate in the TV 5
spectrum are prefixed with a 5 (5-50 is 81.100 MHz).
Channels operating in the TV 6 spectrum are prefixed
with a 6 (6-50 is 87.100 MHz). This channel rastering
makes it easy to determine which TV band you are
operating on. If you are using this system in an area
which does not have a TV station operating on channel 5,
you can use the channels in the TV 5 range. 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 a 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, position the TV band switch on the back of the
receiver to indicate the TV band you wish to use. Position the two rotary switches
to indicate the channel. The left rotary switch is for tens and the right rotary switch
is for ones. To select channel 6-17 (83.80 MHz), position the TV band switch to the
right, indicating use of the TV 6 band. Position the left rotary switch to point to 1,
and position the right rotary switch to point to 7. Refer to frequency charts on
pages 5 and 6 for preset selectable frequencies.
Multiple Channel Operation
Simultaneous operation of more than two channels
requires frequency coordination to avoid intermodulation
interference. This interference could result in poor or
unusable performance. When multiple transmitters are broadcasting, the RF
signals will “mix” together generating additional signals. If these
product frequencies are too close to a frequency which you are using,
you will experience this type of interference. This condition is common to
all radio receivers to some extent. This interference produces whistle
and whine type sounds and/or reductions of range. To avoid this type
of interference, you should select frequencies from one of the standard
groups (see frequency group charts on page 5), or you can 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/software.htm.
IMPOR
TANT