Radtel RT-490 User Manual Page 14 of 29
MENU OPERATION
1. Press then enter menu via up/down key
2. Press again to enter the menu function
3. Select option via up/down key
4. Press to confirm and go back to main menu
5. Press to exit menu and go back to normal working mode
Note: Step, TX power, Wide/Narrow band, CTCSS/DCS, frequency changes etc., can
ONLY be set valid while in Frequency Mode
OTHER FUNCTION DESCRIPTIONS
1. Dual PTT – Set side Key2 as PTT-B
a. Press [PTT] to transmit on ‘A’ band
b. Short Press [PF2] (when set to PTT_B, to transmit on ‘B’ band.
2. AM Mode – 108-136Mhz, Receive ONLY
3. Scan Mode – Set for TO or CO or SE mode
a. [TO] Time scanning, radio pauses scanning when it detects a signal, after
staying stopped for about 5 seconds, scanning continues even if signal is still
there
b. [CO] Carrier Scanning, radio pauses scanning when a channel is detected,
stays on same frequency until the signal disappears. There is a 2s delay
between the disappearance of the signal and resumption of scanning to
allow time for the response to begin transmission.
c. [SE] Search Scanning, radio exits scanning when detecting a signal and stays
on the same frequency.
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