Function settings of Retevis RA55
Function settings of Retevis RA55
The basic features and simple knowledge of Retevis RA55 have been described in detail in A quick look at the Retevis RA55. This article will take a closer look at the RA55.
The basic settings are very helpful for us to start using the walkie-talkie. Let’s take a look.
Power on/off
1 Rotate the power switch clockwise to hear a dick to turn on the power
2 Rotate the power switch counterclockwise to hear a dick to turn off the power.
Volume adjustment
1 In the receiving state, rotate the volume/power switch clockwise to increase the volume.
2 In the receiving state, rotate the volume/power switch counterclockwise to decrease the volume.
Transmitting/Receiving
1 In standby mode. press and hold the transmit button PTT) to transmit the signal of the current channel and the LED lights up in red.
2 Release the transmit button (PTT) to receive the signal sent from the same channel, the speaker makes a call sound and the LED lights up in green.
NOTE: .
●When the walkie-talkie is transmitting, keep the walkie-talkie in a vertical position and keep the microphone 2.5-5 cm away from the mouth. When transmitting, the walkie- talkie is at least 2.5 cm away from your head or body.
●No need to perform multiple on and off actions during use, while adjusting the volume to a level suitable for your hearing.
●Before talking on the walkie-talkie:
(1)Please set the frequency point of the transmitter and receiver to the same;
(2)Please set the sub tone code of transmitter and receiver to be the same for the channel you need to talk to.
Channel selection
In the standby state, rotate the channel knob clockwise and counterdockwise while broadcasting and displaying the current channel number.
Sub-tone code
This product supports 260 groups of sub-tone code function. 50 groups of analog sub-tone code and 105*2groups (N phase and I phase) of digital sub-tone code can be set through the programming software.
PTT switch
Press the PTT button and speak to the microphone to cal another person, the indicator turns red. The indicator turns green while receiving. Upon finishing transmitting or receiving, it will sound a beep.
Noise reduction/VOX
Press the side key shortly to open/dlose the noise reduction function, long press to open/dose the Vox function.
When noise reduction is on, only human voice can be recognized, and information other than human voice will be filtered out.
VOX control allows you to transmit without pressing the PTT button, only using the voice of the speech, and automatically stop transmitting when the speech stops. Vox level can be set through the software from 0-9, the default level is 5.
Squelch
The strength of the noise in the received signal corresponds to the strength of the signal: the stronger the signal, the weaker the noise. The squelch level can be set through from 0-9, the default level is 5.
TOT(Time out timer)
Namely transmit time limit function. In order to prevent some users from occupying the same channel communication for a long time, users can set to open the TOT function. When the user in the current channel reaches a specific transmitting duration, the walkie-talkie will stop transmitting. The transmitting time limit can be set by programming software, 30- 180 seconds (default is 60 seconds) can be selected.
Scan
In order to use scan function, you need to set it in the programming software to the side key first.
If the current channel is 16 channels, the walkie-talkie will automatically detect the activity of channels 1 to 16 defined as scannable channels (software can define each channel can be scanned or not), when there is a signal on the scanned channel, the walkie-talkie will automatically stop on the channel in order to talk.
(1)The radio will stop on the channel with signal, when the signal disappears and then after 10 or so, it will continue to scan the next channel.
(2)When there are less than 2 scannable channels, the walkie-talkie cannot scan.
(3)If you do not want to scan all of these 16 channels, please select "Scan Add" for each channel as "Yes" or "No".
Monitor
In order to use monitor function, you need to set it in the programming software to the side key first.
It is used to receive slight signals. Sometimes it is also regarded as a polite way of using walkie talkies: judge
whether there is a call on the channel before transmitting.
Low battery alert
When the walkie- talkie voice prompts "please charge", and the indicator light flashes red, it means the battery is in low voltage, please charge the battery as soon as possible. At this time, the walkie-talkie will prohibit the user from transmitting, remaining only in standby and receive mode.
(1)Press and hold the PTT key or voice- activated transmitting is invalid and' *please charge" tone prompt, will sound a beep" tone until PTT releases or voice-activated ends.
(2) When the voltage is below a certain level,if the voice selection is turned off, it will sound a "beep" tone every 15s.
