RT57 Wireless business Calling Device
Instruction Manual
Product Overview
Wireless Business Beeper is a kind of communication device that can achieve sample
wireless calling service. For example, in an enterprise or public institution, a leader need
look for his or her secretary, driver or the manager of another department and things like
that. At present, there are plenty of beepers in the market that cannot allow to make a
voice call. A superior need page his or her employee to come and tell things face to face.
Given the fact that there is a lack of this kind of beeper in the market, our company launch
a new model RT57 - Wireless business Calling Device.
Product’s Function
1. Interconnection between 99 devices
2. Two-way communication
3. Making Announcement or one-way conference function
4. Incoming call display
5. Call tone for manual communication
6. Call tone for automatic communication
7. Backlight LCD
8. 5 selectable call tones
9. 10 selectable channels
10. Calling walkie-talkie
Main Technical Parameters
Technical Features
1. There is no need to wire or change current decoration. Reception is stable and perform-
ance reliable. With up-to-date digital encoding and decoding technology, every system
owns its unique code that ensures there is no error between calling system.
2. Two-way communication but ordinary business beepers only establish communication
between master station and extended set. Our new model is designed to satisfy
prevailing market demand that an extension could not only communicate freely to master
station but also to other extensions. A phone set as the terminal could be turned into the
master for the group call as well as an extension for the reception of signals from other
extension terminal. It is able to be used for one-to-one calling and also one-to-many
communications.
3. It could be connected to a wakietalkie for voice call.
4. With good audio quality and long range, it is ideal for a big occasion. It makes no
difference to desk telephone without wires.
Operation Instructions
1
Attaching Battery Pack
Connect the Power Adapter and plug it into an AC outlet and then keep it connected
to the main power.
2.1 Setting the Number for the machine.
Before you turn it on, hold
<CALL>
and then connect it to the power. When numbers
flashes in the display, press <▲> or <▼> to select desired number and start it up
again.
2.2 Making phone calls
RT57 allows to talk with any other RT57 regardless of master or auxiliary terminal.
That is to say that all RT57 models can be used as master and auxiliary equipment
(extension) also.
2.3 Operation to make phone calls
A. Making Calls;
After you select numeric keys presenting phone number of the other party, press
<CALL>
and the key light twinkles. The light will be out if there is no response from
the other party in 10 seconds. When the other party responds, the light for
<CALL>
goes on and two sides can talk. When the call ends, any side can press
<CALL>
to stop.
B. Receiving Calls;
When the device is receiving a call from the other party, alert tone sounds and
keypad lights up. You can press
<CALL>
to respond, and the light is on. At the
moment, two sides can talk to each other. When the talk ends, either side can
press
<CALL>
to stop calls.
C. Broadcasting as Group Calls;
Press
< # >
to make announcements to each other all users. When you finish
talking, press
<CALL>
to stop calls.
D. Responding to a Group Call;
When a Group Call is received, press
<CALL>
to make a response if you need
answer immediately. The moment light blinks and lasts long, you can respond.
When the call ends, press
<CALL>
to quit but target beeper cannot.
E. Communication with conventional radio equipment;
When an analogue radio equipment is set to a channel that is in the same TX
frequency, RX frequency and tone as your beeper, press
< * >
to talk with the radio
equipment on the same channel and listen to incoming calls. (It is limited only to
analogue equipment.)
Setting up Channels and Frequencies for Analogue Radio Equipment
2.4 Setting the Volume
Press <▲> or <▼> to adjust volume level and it also works during communicati
on.
2.5 Setting Automatic Answer and Ring Tone
Press
< M >
three times (Pressing M Key once is to make a call, twice to set up
channel number, three times to set ring tone) to set up the ring tone; press <▲> or
<▼> to display the figure 1,2,3,4 or 5. Figure 1: To answer a call, no ring; Figure 2: To
answer a call after a ring tone; Figure 3/4/5: To press
<CALL>
to answer a call after a
ring tone
2.6 Setting up the frequency channel
It should be noted that it was only when devices in group are on the same frequency
that they can communicate with each other if you are setting up the frequency channel
for wireless communication. If you want to change or set up channel number, press
< M >
twice to show Ch01 in the display and then press <▲> or <▼> to change the
channel number.
Name
Weight
Dimension
Channels
Frequency Range
Channel Spacing
Working Mode
Modulation
Antenna Impedance
Operating Voltage
Operating temperature
Operating current
Standby current
Spurious emission
Output Power
Channel Stability
Modulation Sensitivity
Available Sensitivity
Threshold of Squelch Sensitivity
Deep Quieting Sensitivity
Wireless business Calling Device
365g
160*150*60mm
10
UHF
25KHz
Duplex Mode on Two Frequencies
FSK
50Ω
7--9V
- 20--+55
℃
< 600 mA
60mA
< -60 dB
0.5 W
±5 ppm
2--20 mA
-110dBm
< 0.2uV
< 3uV
Channel
1
2
3
4
5
6
7
8
9
10
RX Frequency (MHz
）
463.01250
463.03750
463.06250
463.08750
463.11250
463.13750
463.16250
463.18750
463.21250
463.23750
TX Frequency (MHz
）
409.75000
409.77500
409.80000
409.82500
409.85000
409.87500
409.90000
409.92500
409.95000
409.97500
CTCSS(Hz)
100
100
100
100
100
100
100
100
100
100
Channel
1
2
3
4
5
6
7
8
9
10
TX/RX Frequency (MHz
）
463.01250
463.03750
463.06250
463.08750
463.11250
463.13750
463.16250
463.18750
463.21250
463.23750
RX/TX Frequency (MHz
）
409.75000
409.77500
409.80000
409.82500
409.85000
409.87500
409.90000
409.92500
409.95000
409.97500
CTCSS(Hz)
100
100
100
100
100
100
100
100
100
100
Local channel frequency
note: Th
e transmitter or receiver frequency of the unit depends on whether it is called or
called
Warning
1. Keep clear of explosive atmosphere (smell, powder and smoke fog and son on).
2. Do not install and use in fuel station.
3. Do not operate in an area in which operating radio transmitter is prohibited unless
authorized.
4. Do not dismantle the radio transmitter if you are not a professional personal because it
is a precision electronic equipment.
Warnings
RF ENERGY EXPOSURE AND PRODUCT SAFETY GUIDE FOR PORTABLE WALKIE
TALKIE
This walkie talkie uses electromagnetic energy in the radio frequency (RF) spectrum to
provide communications between two or more users over a distance. It uses radio
frequency (RF) energy or radio waves to send and receive calls. RF energy is one form
of electromagnetic energy. Other forms include, but are not limited to, sunlight and x-rays.
RF energy, however, should not be confused with these other forms of electromagnetic
energy, which when used improperly, can cause biological damage. Very high levels of
x-rays, for example, can damage tissues and genetic material.
Experts in science, engineering, medicine, health, and industry work with organizations to
develop standards for safe exposure to RF energy. These standards provide recomme
n-
ded levels of RF exposure for both workers and the general public. These recommended
RF exposure levels include substantial margins of protection.
All Retevis walkie talkie are designed, manufactured, and tested to ensure they meet
government-established RF exposure levels. In addition, manufacturers also recommend
specific operating instructions to users of walkie talkie. These instructions are important
because they inform users about RF energy exposure and provide simple procedures on
how to control it.
Please refer to the following websites for more information on what RF energy exposure
is and how to control your exposure to assure compliance with established RF exposure
limits: http://www.who.in
t/en
Local Government Regulations
When walkie talkie are used as a consequence of employment, the Local Government
Regulations requires users to be fully aware of and able to control their exposure to meet
occupational requirements. Exposure awareness can be facilitated by the use of a product
label directing users to specific user awareness information. Your Retevis walkie talkie has
a RF Exposure Product Label. Also, your Retevis user manual, or separate safety booklet
includes information and operating instructions required to control your RF exposure and
to satisfy compliance requirements.
Radio License
Governments keep the radios in classification, most of the classified walkie-talkie need to
get local government License, and operation is allowed. The detailed classification and
the use of your two radios, please contact the local government radio management
departments. For the following specified
classification: the USA FRS,
Australian CB, the
individual license is not required.
ATTENTION!
Before using this radio, read this guide which contains
important operating instructions for safe usage and RF
energy awareness and control for compliance with
applicable standards and regulations.
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