Baofeng BF-88ST User manual

BF-88ST
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Table of Contents
Chapter 1. Getting started
Safety Information
What’s in the Box
Chapter 2. Getting started
Battery Maintenance
Charging
Chapter 3. Basic operation
Quick Start Guide
Battery Save Function
Busy Channel Lockout
Wide/Narrow Bandwidth Setting
VOX
Voice Prompt
Low Battery Indication
Squelch
Time-Out-Timer(TOT)
CTCSS/DCS
Side Key Custom Setting (Monitor/Alarm)
Chapter 4. Computer Programming
Chapter 5. Trouble Shooting Guide
Appendix A. Product Safety Guide
Appendix B. Specifications
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01
Chapter l. Getting Started
Safety Information
Please read the following brief instructions, non-compliance with these rules may improper use may
cause danger and violate the law.
1. Refer to local government regulations before using this radio, improper use may violate the law.
2. Turn off the radio before getting close to combustible or hazardous area.
3. Do not charge the battery in the combustible or hazardous area.
4. Do not use the damaged antenna, which will easily get burnt while touching.
5. Do not try to disassemble the radio, the maintenance work should be only done by technical expert.
6. To avoid electromagnetic interference or electromagnetic compatibility, please turn off the radio in
places where prohibit from using wireless equipment, such as hospital and other healthcare facilities.
7. In the car with an airbag, do not put the radio within the scope of the airbag long deployment.
What’s in the Box?
Thanks for choosing BAOFENG two way radio. We recommend you to check the items listed in the
following table before discarding the package box.
Note: The radio is compatible with other accessories which are available on:
https://www.baofengradio.com/
• Speaker microphone
• Programming cable
• Earphone
Li-ion Battery Belt Clip USB Charger Earpiece Wrist Strap User Manual

02 03
Chapter 2. Getting Familiar
Antenna Channel knob
Power/ volume knob
Indicator light
•Red light: Transmitting
• Green light: Receiving
• Red flashing light: Low battery
Mic/speaker jack/
programming port
•Use to connect headset/
microphone / external
programming cable
Li-ion battery
•Supplying power to radio
Flashlight
MONI/Alarm Key
LED key
Speaker
•Sound output
PTT switch
•Press to transmit
•Release to receive
Microphone
•Sound input
Battery Maintenance
Caution
Please use BAOFENG designated battery; other batteries can cause explosion.
Note
1. Do not short-circuit the battery terminals or dispose of in fire. Do not disassemble the battery by yourself.
2. Charge the battery between temperature 0°C and 45°C. The battery cannot be fully charged beyond
this temperature range.
3. Turn off the power when you charge the radio.
4. Remove battery from charger when charging has completed.
5. Replace battery when operating time becomes insufficiently low.
6. Do not charge when the battery or the radio is wet. Please dry it with a cloth before charging to avoid
any danger.
Warning
If conductive metals, such as jewelry, keys or chains, contact the external charging contacts, damage
or persona injury may occur.
Installing/Removing the battery
1. Align the two grooves of battery and the guide rail on the back of aluminum shell ensuring full contact
and in parallel, then push the battery up to the radio base along the rail on the back of aluminum shell,
until the battery latch locks up.
2. To remove battery, please make sure the radio is off, push the battery latch down, and make sure the
radio and battery is on the releasing state, and then push the battery out from the radio.

04 05
Chapter 3. Basic operation
Quick Start Guide
1. Carefully open the box and remove radio body, battery and antenna.
2. Install battery in radio body until it clicks (be gentle!) (See specific directions in previous section)
3. Turn on power knob by twisting gently clockwise. The radio will respond with, “Open the radio, 1, ”
or whatever channel is selected by the taller selector.
4. Select your desired channel，radio will respond with “One, Two, etc.”
5. Press the PTT and talk!
NOTE
The battery included with the radio generally has enough power in it to test your radio. You should fully
charge the battery for optimal performance.
The BF-88ST is a cost effective FRS radio. It can communicate with any other brand of radio that with
FRS frequency, but without spending an exorbitant amount of cash! You just need to make sure they
are in the same channels/frequencies, and this can be simply checked by using the software. If they
are not in the same frequency, just program via computer. (See chapter 4)
Charging
How to use the USB desktop charger:
1. Plug the USB connector into a suitable USB power source. LED will become YELLOW indicating
ready to commence the charging cycle.
2. Place either the Radio (OFF) or just the battery into charger. Charger LED will show RED indicating
the charging cycle has commenced.
3. When the LED turns GREEN, charging has completed and the radio or battery should be removed
from the desktop charger.
NOTE
1. Before inserting the battery, it is abnormal if the charging indicator blinks.
2. Wait until the indicator is stable before placing battery in charger.
3. When the battery is properly inserted, the indicator turns red and starts the charging process. If the
indicator blinks, then the battery is damaged or the temperature is too high or too low.
Installing external headset
Gently displace (do not remove) the speaker jack cover, insert the headset into the speaker jack.

06 07
Battery Save Function
This function can be set by the software.
By turning on this function the standby time can be much longer.
Busy Channel Lockout
You can turn on/off this function via software.
A: If the current channel does not have CTCSS/DC, when there is a signal, TX prohibited when you
press PTT.
B: If the current channel does not have CTCSS/DCS, when there is signal which does not have CTCSS/
DCS, TX prohibited when you press PTT.
C: If the current channels does not have CTCSS/DCS, when there is signal which have CTCSS/DCS,
the radio will transmit when you press PTT.
VOX
Turn VOX on/off though the software or special key combinations. Speak to the microphone in normal
voice to transmit, no need to press PTT switch.
A. When VOX is on in your working channel:
Speak to the microphone directly, it will transmit automatically.
B. When a headset with a microphone is used:
When VOX is on, you should VOX again for the radio to identify voice volume.

08 09
Voice Prompt
1. The voice prompt can be selected to “ON/OFF” through the menu voice/Beep Tone of the “Optional
Feature” in the software. When choosing OFF, voice prompt turns off.
2. Channel annunciation: You will get to know the working conditions of current channel which is being
operated.
3. Low battery alert: The radio will remind you when the battery capacity reaches the minimum operating
voltage.
If the microphone is sensitive enough, the radio will start transmit.
If the microphone is not sensitive enough, the radio cannot collect your voice. Please adjust your voice
volume to guarantee smooth communications.

10 11
Low Battery Indication
When the radio is in transmitting or standby, if the battery capacity reaches the predetermined low level,
the indicator light blinks red, and a low battery alert tone will be heard. The indicating tone will be
“Please change the battery”. When the low battery alert occurs it cannot transmit, please change or
charge the battery.
Squelch
The squelch level will determine the signal strength at which the radio speaker is turned on. If the
squelch level is low, the background noise of the radio speakers will be higher, the corresponding
communication range will be further, but the anti-interference ability will be weaker.
The default setting of squelch level is 5. You can adjust it through the menu “Squelch Level” in the
software from level 0 to 9, and 0 is the lowest level.

12 13
Time-Out-Timer (TOT)
This feature provides a safety switch that limits transmission time to a programmed value. This will
promote battery conservation by not allowing you to make excessively long transmissions, and in the
event of a stuck PTT switch it can prevent interference to other users as well as battery depletion. If
the transmitting time exceeds the TOT preset time, a beep will be heard and the radio will stop
transmitting.
QT/DQT (CTCSS/DCS)
QT/DQT (CTCSS/ DCS) is the sub-audible signaling, to prevent the radio from receiving unwanted
signals on the same frequency. When CTCSS/DCS is set, then within the communication range, you
can only receive signals from the same frequency with the same QT/DQT setting. When the QT/DQT
is off, you will get all the signals from the same frequency within the communication range.
CTCSS
67.0 69.9 71.9 74.4 77.0 79.7 82.5 85.4 88.5 91.5
94.8 97.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3
131.8 136.5 141.3 146.2 151.4 156.7 162.2 167.9 173.8 179.9
186.2 192.8 203.5 210.7 218.1 225.7 233.6 241.8 250.3
DCS
D023N D025N D026N D031N D032N D043N D047N D051N D054N D065N
D071N D072N D073N D074N D114N D115N D116N D125N D131N D132N
D134N D143N D152N D155N D156N D162N D165N D172N D174N D205N
D223N D226N D243N D244N D245N D251N D261N D263N D265N D271N
D306N D311N D315N D331N D343N D346N D351N D364N D365N D371N
D411N D412N D413N D423N D431N D432N D445N D464N D465N D466N
D503N D506N D516N D532N D546N D565N D606N D612N D624N D627N
D631N D632N D654N D662N D664N D703N D712N D723N D731N D732N
D734N D743N D754N

14 15
D023I D025I D026I D031I D032I D043I D047I D051I D054I D065I
D071I D072I D073I D074I D114I D115I D116I D125I D131I D132I
D134I D143I D152I D155I D156I D162I D165I D172I D174I D205I
D223I D226I D243I D244I D245I D251I D261I D263I D265I D271I
D306I D311I D315I D331I D343I D346I D351I D364I D365I D371I
D411I D412I D413I D423I D431I D432I D445I D464I D465I D466I
D503I D506I D516I D532I D546I D565I D606I D612I D624I D627I
D631I D632I D654I D662I D664I D703I D712I D723I D731I D732I
D734I D743I D754I
Side Key Custom Setting (Monitor/Alarm)
You can custom the second side key as Monitor key or Alarm key by programming in the CPS software.
Click Edit > Function Setting, under “Side Key”, you can activate 3 optional functions: “Off means side
key function is unavailable，“Monmome” means Monitor function, “Alarm” means Emergency Alarm
function.

Chapter 4. Computer Programming
16 17
Monitor
This feature allows users to check whether a channel is clear before transmitting. If a frequency is in
use, you can hear what is transmitting. If s important to check the frequency and privacy code you
intend to use and select clear frequencies to set your channels.
If s also helpful to use the radio when receiving a weak signal. Press and hold MONI button, the indicator
light will turn green which indicates the radio is receiving signal.
Emergency Alarm
Emergency Alarm is used to indicate an emergency situation. When press and hold the Alarm key, it
makes a loud alarm so that other people will know you are in trouble. You can initiate an emergency
call at any time, even if there is activity on the current channel.
The Radio kit does not include a programming cable. To attain a PC cable please visit:
https://www.baofengradio.com/
1. Computer System Requirements
Operating System: Windows 98, Windows Me, Windows XP, Windows 7, Windows 8 and Windows 10.
Hard Disk Space: at least 50MB of available
The minimum memory: 64M
2. Programming Cable
A. USB programming cable - The driver needs to be installed before writing any frequencies.
(1). Find the corresponding driver of the system;
(2). Click install and wait for the installation to succeed.
B. If you are using a serial cable a driver is not required. You can just plug in and use directly.
3. Software Download & Install
(1). Turn on the computer, check if your computer system meets the requirements;
(2). Download the programming software on baofengradio.com;
(3). Install the programming software.
4. Connect your BF-88ST with Computer
(1). USB (or serial) programming cable connects with the computer end.
(2). Connect the other end of the cable with your BF-88ST.
(3). When the both ends have been connected, turn on your radio. Make sure it has enough power
during the programming procedure.
Note
In some cases, the cable does not fully seat in a new radio. Make sure the cable isFULLY seated prior
to transferring data.

Chapter 5. Trouble Shooting Guide
18 19
5. Read & Write Data via Software
(1). In the software menu, click Setup> Communication Port and select proper COM port (COM
port may be located by using Windows Device Manager).
(2). In the menu, Select Program> Read from Radio> OK to read frequencies. This process takes
a few seconds and progress in shown by a green progress bar in the software.
(3). Now you can edit any data and set all the functions that you want.
(4). To write you completed data file, select Program> Write to Radio> OK.
(5). If you have to program multiple BF-88ST, you can repeat the above steps.
6. If you have to program multiple walkie talkies, you can repeat the above steps.
FRS, GMRS,MURS and PMR446
You may be tempted to use FRS? GMRS? MURS (in the USA) or PMR 446 (in Europe) Frequencies.
Do note however there are restrictions on these bands that make this transceiver illegal for use.
1. When reading or writing frequency, I do not get a response or it reports a communication error?
a. Check your programming cable to see if it is damaged.
b. Check the connection of the programming cable and computer serial port.
c. Check to find if the BF-88ST battery level is low or depleted. If it is please replace or charge the
battery.
d. Check the programming software is matched with the current model.
e. Check if you turn ON your radio.
f. Check that the proper software drivers are properly installed.
2. When programming is done, why can't my two radios talk to each other?
a. Make sure the two radios are on the same channel.
b. Check the same channel is set to receive the same QT/DQT (CTCS / DCS).
c. Check if the two radios' volume control level is high enough. Depress the MON button and adjust
volume to comfortable levels.
d. Check range of the radios (Line of Sight).
Troubles Solution
Radio cannot turn on 1. The battery is out of power. Replace or recharge the battery.
2. The battery is installed incorrectly. Remove and install it again.
Replace the battery.
1. Confirm the QT/DQT is the same
2. The distance is out of range
The operating time becomes
short, even the battery is fully
charged
Unable to communicate with
the transceivers of the same
group
The voice of another group
can be heard
Other radios cannot receive
the TX signals or receive
signals in a low volume
Noise is always heard
Change all QT/DQT of the group
1. Switch the volume knob to the highest
2. The microphone may be damaged, send it to the local dealer
for checking.
The distance is out of range. Turn on the radio in shorter distance
and try again.

20 21
Appendix A. RF Energy Exposure and Product
Safety Guide for Portable Two-Way Radios
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.
This two-way radio 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 recommended levels of exposure
for both workers and the general public. These recommended RF exposure levels include substantial
margins of protection.
All BAOFENG two-way radios 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 two-way radios. 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 how to control
your exposure to assure compliance with established RF exposure limits: http://www.who.int/en/
Radio License
Governments keep the radios in classification, most of the classified walkie-talkie needs to get local
government License and operation is allowed. For the following specified classification: the USA FRS,
Australian CB, the individual license is not required.
RF Energy Exposure Standards and Guidelines (If appropriate)
Your BAOFENG two way radio complies with the following RF energy exposure standards and guidelines:
1. United States Federal Communications Commission (FCC), Code of Federal Regulations; 47 CFR
part 2 sub-part J.
2. American National Standards Institute (ANSI) institute of Electrical Electronics Engineers (IEEE)
c95.1-2005.
3. IEEE Std. 1528: 2013 and KDB447498, Evaluating Compliance with FCC Guidelines for Human
Exposure to Radio Frequency Electromagnetic Fields.
4. Institute of Electrical and Electronics Engineers (IEEE) C953-2002.
5. International Commission on Non-Ionizing Radiation Protection (ICNIRP).
6. Ministry of Health (Canada) Safety Code 6& Industry Canada RSS-102.
7. International Electrotechnical Commission IEC62209-2. 2010.
Operating Instructions
1. Transmit no more than the rated duty factor of 50% of the time. To Transmit (Talk), push the Push
To Talk (PTT) button to receive calls(listen), release the PTT button. Transmitting 50% of the time,
or less, is important because the radio generates measurable RF energy exposure only when
transmitting in terms of measuring for standards compliance.

22 23
2. Transmit only when people outside the vehicle are at least the recommended minimum lateral distance
away from a properly installed according to installation instructions, externally mounted antenna.
3. When operating in front of the face, worn on the body, always place the radio in a BAOFENG approved
clip, holder, holster, case, or body harness for this product. Using approved body worn accessories
is important because the use of BAOFENG approved accessories may result in exposure levels,
which exceed the IEEE/ICNIRP occupational/controlled environment RF exposure limits.
4. lf you are not using a body worn accessory and are not using the radio in the intended use position,
in front of the face or at the body in the PTT mode or alongside of the head in the phone mode, then
ensure the antenna and the radio are kept 2.5 cm (one inch) from the body when transmitting.
Keeping the radio at a proper distance is important because RF exposures decrease with increasing
distance from the antenna.
Protect Your Hearing
1. Use the lowest volume necessary to do your job.
2. Turn up the volume only if you are in noisy surroundings.
3. Turn down the volume before adding headset or earpiece.
4. Limit the amount of time you use headsets or earpieces at high volume.
5. When using the radio without a headset or earpiece, do not place the radio's speaker directly against
your ear.
Note:
Exposure to loud noises from any source for extended periods of time may temporarily or permanently
affect your hearing. The louder the radio's volume, the less time is required before your hearing could
be affected.
Hearing damage from loud noise is sometimes undetectable at first and can have a cumulative effect.
Safety Operation
Forbidden:
1. Do not use charger outdoors or in moist environments, use only in dry locations/conditions.
2. Do not disassemble the charger, which may result in risk of electrical shock or fire.
3. Do not operate the charger if it has been broken or damaged in any way.
4. Do not place a portable radio in the area over an air bag or in the air bag deployment area. The radio
may be propelled with great force and cause serious injury to occupants of the vehicle when the air
bag inflates.
To Reduce Risk
1. Pull by the plug rather than the cord when disconnecting the charger.
2. Unplug the charger from the AC outlet before attempting any maintenance or cleaning.
3. Contact [e-mail] for assistance regarding repairs and service.
Use of Communication Devices While Driving
1. Always check the laws and regulations on the use of radios in the countries and areas where you drive.
2. Give your full attention to driving and to the road.
3. lf available, use the hands-free facility.
4. lf driving conditions or regulations require it, pull off the road and park before making or answering
a call.

24 25
Appendix B-Specifications
General
Transmitter
Receiver
Model Number BF-88ST
Frequency Range FRS
Channel Number 16
Working Voltage DC 3.7V
Working Temperature -10°C … +50°C
Antenna High Gain Antenna
Antenna Impedance 50Ω
Mode of Operation Simplex
Frequency Range FRS
Sensitivity < 0.2 μV
Occupied Bandwidth ≤16KHz
Squelch Selectivity < 0.2 μV
Intermediation ≥65dB
Selectivity ≥55dB
Audio Power 1W
Audio Distortion ≤5%
Frequency Stability 5ppm
Current 80mA(when standby) 200mA(when working)
Audio Response +712.5dB
Frequency Range FRS
Output Power US: 0.5/2W
Modulation mode 16KF￠3E
Spurious Radiation 7_5uW
Modulation noise <-40dB
Modulation distortion <5%
Frequency Stability 5ppm
Maximum deviation < ± 5KHz
Current < 2300mA
Audio response(300-3000Hz) +6.5 ~-14dB
Adjacent Ch. power >65dB
Intermediation sensitivity 8 ~12mv
Note
The specifications will be revised due to technical improvements without prior notice. Thanks for
understanding.