Radtel RT-920 Two-Way Radio

This document provides comprehensive information on the Radtel RT-920 two-way radio, covering its features, operation, and safety guidelines.

Getting to Know Your Device

The device includes an antenna, PTT button, PF2 and PF3 buttons, A/B Band and V/M selectors, a power knob, indicator light, LCD screen, microphone jack, earphone jack, speakers, and a type-c battery charging port. The keypad features number keys, function keys (A/B, V/M, DW, T/R), and navigation keys (UP, DOWN, EXIT, SCAN, MR, DTMF).

Shortcut Key Combinations:

Long press Number 1: Scan
Long press Number 2: Memory channel
Long press Number 3: Frequency step
Long press Number 4: Power selection
Long press Number 5: Dual standby
Long press Number 6: CTCSS
Long press Number 7: Offset direction
Long press Number 8: Offset frequency
Long press Number 9: FM radio
Long press Number 0: Keyboard lock/unlock
Short press Number #: DTMF
Short press Number *: R/T

Display LCD: The display shows various icons and information related to the radio's status, including dual band interface.

Icon Descriptions

Various icons indicate different functions and statuses:

CT: Analog sub-audio tone indicator.
DCS: Digital sub-audio tone indicator.
H: High power indicator.
M: Medium power indicator.
L: Low power indicator.
N: Narrow band mode indicator.
W: Wide band mode indicator.
+: Frequency offset indicator (transmit frequency = receive frequency + offset).
-: Frequency offset indicator (transmit frequency = receive frequency - offset).
AM: AM modulation indicator.
SCR: Scrambler function indicator.
VOX: Voice-activated transmission indicator.
DW: Dual standby indicator.
MO: Monitor function indicator.
RSSI: Received signal strength indicator.
VOL: Transmit audio volume indicator.
Battery Status: Displays remaining battery power.
R: Reverse frequency/channel mode indicator.
T: Simplex mode indicator.
SC: Encryption indicator.

Basic Operations

Selecting Main Frequency Band: Press the A/B button to switch between main frequency bands.
PTT Function: Press the PTT button to transmit on the selected band.
Channel/Frequency Mode Switch: Press the VFO/MR button to switch between channel and frequency modes.
AM Air Band Mode: Enter frequencies directly in the 108-136 MHz range for AM reception.
Scanning Mode: Assign scan function to PF2/PF3 keys or long press '1' to start scanning. Modes include Time (TO), Carrier (CO), and Search (SE).
Frequency Sweep/Copy Function: Use PF2/PF3 keys to search for frequencies and CTCSS/DCS tones of nearby radios.
NOAA Weather Forecast Function: Press the designated side key to activate NOAA weather broadcasts on 10 preset frequencies.
DTMF Encoding: Press and hold PTT while entering numeric keys to transmit DTMF codes.
PTT-ID Function: Transmit identity codes or call codes via DTMF.

Menu Operation Instructions

Navigate the menu using the OK/MENU, UP/DOWN keys, or channel knob. Use EXIT to return to the main menu or normal operation.

Shortwave Interface: Press '0' to enter shortwave interface. Use '*' to change step/BW/LAN/BFO, and 'MENU' to select modulation, '#' to search frequency.

Menu Function List: The manual details numerous menu functions, including:

SQL: Squelch level adjustment.
Steps: Frequency step adjustment.
TXP: Transmit power settings (High, Medium, Low).
Save/Save: Save settings.
VOX: Voice-activated transmission settings.
W/N: Wide/Narrow band selection.
ABR: Backlight settings.
TDR: Dual frequency standby settings.
BEEP: Key beep settings.
PROMPT: Voice prompt settings.
Language: Voice prompt language selection.
BCL: Busy Channel Lockout settings.
SC-REV: Scan mode settings (Time/Carrier).
Roger Beep: End-of-transmission tone settings.
Tones: Burst tone settings (1000Hz, 1450Hz, 1750Hz, 2100Hz).
DTMFST: DTMF transmit settings (DT+ANI, DTMF, EOT).
AUTOLOCK: Auto keypad lock time.
SCAN ADD: Add/delete channels to scan list.
PTT-LT: Delay time before automatic DTMF transmission.
TIME: Operation delay time.
VOX DELAY: VOX delay time.
RP-STE: Squelch tail elimination for repeater communication.
RPT-RL: Repeater tail tone delay.
STE: Squelch tail noise elimination.
AL-MOD: Field alarm settings.
SCRAMBLE: Voice scrambler function.
NOISE REDUCTION: Noise reduction settings.
BLUETOOTH: Bluetooth connectivity settings.
RESET: Menu initialization.
RX: Modulation selection (AM/FM).
VERSION: Firmware and hardware version display.
TX-A/B: Transmit band selection in dual standby.

Safety and General Information

Environmental Protection: Dispose of electronic waste responsibly at designated centers.
RF Exposure Compliance: The device complies with government regulations for RF exposure. Follow operating instructions to control exposure.
General Precautions: Avoid exposing the device to extreme temperatures, moisture, dust, or liquids. Do not disassemble or modify the device. Use only approved accessories.
Battery Safety: Use only compatible batteries. Risk of explosion if battery is replaced with an incorrect type.
FCC/Industry Canada Compliance: The device complies with relevant regulations for radio frequency emissions.
Operating Position: Hold the transmitter approximately 25 mm from the face with the antenna pointed upwards.
Modifications: Unauthorized modifications may void the user's authority to operate the equipment.

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