PS Engineering Inc. ®
PAR200A Audio Selector Panel, COM radio Controller and Intercom System
Installation and Operator’s Manual
200-228-0200 Page 3-5 Rev. 4, DEC. 2017
Figure 3-7 Monitor indication
When MON is active, the receiver is tuned to the Standby frequency and passes received audio on that chan-
nel. When the Active frequency receives a signal, the signal from the active frequency is automatically pro-
vided to the audio.
Both active and standby frequencies are monitored at the same time for a signal. A signal can be received on
either the active or the standby frequency.
While receiving a signal on the active frequency - the standby channel is NOT monitored.
While receiving a signal on the standby frequency - the active channel is periodically monitored. If a signal
is found on the active frequency, the TY91/92 will revert to the active frequency. After a signal has been
received, the TY91/92 will return to monitoring both frequencies.
The standby monitoring frequency sends an audible “ticking” to make you aware which is the active &
standby. It will be important to remember which frequency is active and which is standby, to avoid answering
a transmission on the standby frequency by transmitting a response on the active frequency.
3.7.4 Tuning 8.33 kHz channel Spacing
Hold the “MUTE” button on the left side for 3 seconds, which will toggle between either 25 kHz spacing or
8.33 kHz spacing. This will be displayed on the LCD screen.
Figure 3-8 Channel Spacing switching
3.7.4.1 Channel Assignment under 8.33 kHz spacing:
The following table provides an example of the 8.33 Channel assignments as displayed on the PAR200A,
when in the 8.33 mode.
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