General Dynamics C4 Systems URC-200 (V2)
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4.4.7.1 Select Scan Mode
Pressing the [MODE] key and then the [SCAN] key activates or de-
activates the SCAN MODE. The scan mode causes the transceiver to
cycle through the preset channels which are flagged as "scan channels",
(see Paragraph 4.4.6.7), searching for an active channel (i.e., one where
incoming signal strength is sufficiently large to break squelch). While
scanning, the display shows
the channel that it is scanning. The
transceiver will scan for 0.5 seconds on each selected scan channel. If an
active channel is found, the transceiver locks on that channel. If that
channel becomes inactive for approximately four seconds, the
transceiver continues
the scan with the next flagged channel. If the
operator wishes to continue the scan while on a channel that is (or was)
active, the [SCAN] key can be pressed. When an active channel is
found, that channel's receive frequency is displayed. If the push-to-talk
key (PTT) is pressed while the transceiver is scanning, it will be
ignored. If the PTT is pressed while a channel is active, the transceiver
will go out of scan mode and into the normal mode using that channel,
transmitting on that channel's preset transmit frequency. If the scan list
has less than two channels, then the LCD blinks "Err-noSC" indicating
the transceiver cannot enter the scan mode. To return to normal
operation press the [CH] key followed by one of the 10 channel
numbers [0 through 9]. The Scan Mode is cancelled and the transceiver
goes to the selected channel.
When the scan mode is de-activated normally, by using the [MODE]
plus [SCAN] keys, or by turning the transceiver OFF and then ON, the
transceiver returns to normal operation on the channel that was in use
immediately prior to entering the SCAN mode.
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