Retevis RT20 Wearable 2 Way Radios Specifications and Datasheet
- June 13, 2024
- RETEVIS
Table of Contents
Retevis RT20 Wearable 2 Way Radios
FUNCTION OPERATIONS
- Long press the power key for 2 seconds to turn on/turn off the radio.
- CH+/CH-: it is the regulating channel.long press[CH+]for 2 seconds to enter the monitor mode, release to quit; long press [CH-]for 2 seconds to enter the scan state,operate again to exit.
- VOL +NOL-: the volume has a total of 8 levels. long press [VOL +]for 2 seconds to turn on /off the VOX function (firstly it needs to set the VOX function open by the software).
- PTT: while pressing the PTT launch button, keeping the microphone 3-Bcm away from the mouth.
- OCK: long press for 2 seconds to lock the keyboard, operate again to unlock.
- FM: turn on the radio, press[CH+]/[CH-]to searchJ\le radio frequency automatically.
OPTIONAL FUNCTIONS
-
Scanning
It is convenient for the user to search for calls from other channels.Long press [ CH – ] for 2 seconds to enter the scan state,operate again to exit(note: if there are less than 2 channels, it can not scan,it can be set by software). -
Monitoring
Long press [ CH+ ] to enter the monitor mode, release to quit. -
VOX
VOX is a function that voice can be launched without pressing the PTT key.Long press [ VOL +] for 2 seconds to tum on /off the VOX function (firstly it needs to set the VOX function open by the software). -
Chinese/English Voice Prompt
The radio has a manual switching function between the Chinese and the English.Switch to channel 16, turn off the radio, and then press the power key and CH+ key at the same time,turn on the radio to switch between the Chinese and English. -
FM Radio
Press the FM key to tum on the radio, and then press[CH+]/[CH-] to search the radio frequency automatically. -
Keyboard Lockout
Long press the keylock for 2 seconds to lock the keyboard,operate it again to unlock. -
Time Out Timer{TOT)
The purpose of the TOT is to prevent any single person from using a channel for an extended period of time.If the transmission continues beyond the set time,the transceiver will stop transmis- sion and give out alarms.To stop the alarms,please release the PTT switch and the transceiver will resume to the state of standby. -
Busy Channel Lockout
The function can prevent interfering other intercom calls from the same channel,it needs to be set up by the software. -
High-Low Power
The radio has a high-low power selection. -
Battery Power Saving
The radio would reduce its power consumption if there is no signal or no operation.When the channel is unoccupied or no operated,the battery power- saving function is activated. When signal is received or with operation,the battery saving function would be off automatically. -
Low Battery Warning
If the battery power falls to the predetermined value during transmission, the radio will send out a voice prompt. Please replace the battery or charge it! -
Scrambling
It is a voice encryption mode which is different from sub audio. -
Companding
It is a function setting which prevents the inter-channel interference. -
CTCSS/DCS
The radio has 50 CTCSS and 208 DCS,also non-standard subaudio can be set!
CDCSS Mode
It is valid only when you set the CDCSS on the channels. This function has two selections: “normal signaling” and “special signaling”. Normal Signaling refers to the CDCSS codes on the channels is ordinary codes, we can talk to each other with the same CDCSS; Special Signaling refers to the CDCSS codes on the channels is special processed codes,when the radios in one company are set the same frequency with the same CDCSS and while setting a special signaling, they can avoid the signal interferences from the other companies’ radios.
TECHNICAL PARAMETERS
SPECIFICATIONS
Frequency Range| 400-470MHz
Supply Power| DC3.7V
Memory Channel| 16
Antenna Configuration| Integrated Antenna
Work Mode| Co / D i ffe r – fre q u
en c y Si m p lex Com muni cat i o
n
Ground Method| Cathode
Dimension| 89x51x15mm
TRANSMITTER
Output Power| 2W/0.5W
Modulation Mode| F3E
Max.FrequencyDeviation| ,;; ± 5KHz
Sparious Radiation| ,;;7_5µw
Preemphasis Character| Per Octave 6dB
Emission Current| ,;;1000mA
RECEIVER
Sensitivity| <0.16uV(12dBSINAD)
Audio Power| ;;.3oomw
Audio Distortion| ¾ 5 %
I n termodula ti on In te rf e r
ence R esis t a n ce| ;;a 6Qd8
Receiving Current| ,;;3QQmA
Standby Current| <; 2QmA
We May Change The Specifications For Technical Improvement Without Prior Notice.
FAQs
What makes the Retevis RT20 unique?
The Retevis RT20 comes out of the box with features like independent button adjustments for volume and channel. It's mini-sized, lightweight, and each unit comes with a blue rope for easy, comfortable wear around your neck.
What is the VOX function?
How long does the battery last?
The 1000mAh rechargeable lithium battery can last for 10 to 12 hours on a single charge, which takes only two hours to complete. The device uses a standard USB-C interface for convenient charging.
Can it receive radio channels?
Yes, the RT20 allows you to listen to weather radio, news, or important events at any time, thanks to its clear audio.
Is it elderly-friendly?
Yes, the radio has a keyboard lock function that locks in your settings to prevent accidental changes, making it practical for the elderly.
How easy is it to operate?
The radio is designed for easy operation with a user-friendly keyboard. All common functions can be accessed easily, even by novices. The keypad lock function ensures your personalized settings remain unchanged.
Does it have a hands-free mode?
Yes, the radio activates transmission by your voice, eliminating the need to press the PTT button.
What are the other features?
The radio comes with features like English Voice Prompt, Keyboard Lockout, VOX, Secure Call, Low Battery Warning, and Power Saving Function. It offers TOT (Time-out Timer) as well.
Can I use it to communicate with family?
Absolutely, it's perfect for keeping in touch with family and offers safer conversation options like Secure Call, CTCSS, and DCS to reduce unnecessary chats from other channels.
What are the charging options?
The standard USB-C interface allows you to charge it via a power bank, PC, or car charger.
What's included in the box?
You will get 3 RT20 two-way radios, 3 adapters, 3 USB cables (Length: 39 inches), 3 slings, and 3 English user manuals.
How many channels does it have?
It comes with 16 channels.
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