7.6.3. Other Selcall Functions
The SRP9180 has several other functions that affect how the radio operates with
received signals or Selcalls. These are described later in this manual in the following
sections:-
• Section 9.1 – Monitor/Reset.
• Section 9.3 – Reset.
• Section 9.4 – Send-1, Send-2.
• Section 9.5 – Transpond Enable.
• Section 9.9.9 – Special Encode1…8.
7.7. SCAN FUNCTIONS
Scanning consists of sequentially searching up to 15 channels for a valid signal (RF,
CTCSS or Digital Coded Squelch (DCS) tone). When found, the radio will stop on that
channel until the signal disappears.
While listening on the channel, the user may PTT on that channel. After the signal
disappears the radio will remain listening on the channel for a short time (typically 3
seconds) before resuming scanning.
If a Priority/Emergency Channel is assigned, the radio will interleave a check of this
channel between each normal channel check. The radio may also check the Priority
Channel every few seconds while stopped on a channel. If a signal is found on the
Priority Channel then the radio will switch to that channel immediately.
To activate Scanning, select a Scan Channel.
7.7.1. Scan Screen
The display shows the name of the current Scan-Group (e.g.
ScanChGrp), which may be changed using the
▼
/
▲
keys.
The Scan-Group number is shown at the top-left of the display
(i.e. 1, 2, 3, 4) if it is a User Scan-Group, or blank for Fixed Scan-
Groups. While the Scan Screen is displayed the radio is scanning
the shown group.
The RSSI indicator shows the received signal strength as the radio is scanning.
All other keys have the same assignments as in the Main Channel Screen.
When stopped on a channel, the name of the selected site, and the “rotating arrow”
symbol is replaced by the Speaker symbol.
Doc Number:
TNM-U-E-0089 ISSUE 2.2
Page
34
