Pofung T88, GT1 Retevis H-777
This is one man's attempt to have a readable
User Manual for the BF-888S transceiver.
Lights red during transmit, green when receiving a
Rotate to select a channel. No. 16 is the scanning
||Power Switch / Volume
Turn clockwise to switch ON the transceiver.
Turn counterclockwise to switch OFF transceiver.
Rotate to adjust volume.
||PTT (Push-to-Talk) Button
Push button to transmit.
Release to receive.
Press and Hold (Squelch OFF) to hear background noise;
Release to return to normal operation.
(Function Button) Button
Press to activate LED torch function.
||Speaker Microphone /
Programming Cable Jack
|Switching Power ON/OFF
Turn the Power switch/Volume control
clockwise. You will hear a beep and
speech indicating the transceiver is ON.
Adjusting the Volume
Hold Monitor button
to listen to audio level while rotating the Power
Rotate Volume Control to increase / decrease the volume.
Selecting the Channel
Turn the Channel Switch
to the desired channel. No. 16 is the Scanning
To transmit, Press and Hold PTT
and speak into the microphone in a normal tone of voice.
The LED indicator lights continuously red when
For maximum sound clarity at the receiving station, hold
the transceiver 2 to 3 inched from mouth and talk in a
normal tone of voice.
Note: Yelling does not make your signal louder.
CHARGING the LI-ION BATTERY PACK
Charge the battery pack before using it. The new or
stored (more than 2 months) battery pack cannot reach
full capacity after the first charge. After 2 or 3
charges and discharges, it will reach full charge.
1. Plug adapter into electrical socket.
2. Insert transceiver or battery into the charging
3. Ensure that the battery contacts connect with
the drop-in charging tray. While charging is taking
place, the LED will glow Red.
4. After 3 hours charging, the LED indicator will
5. Remove battery or transceiver from the charging
Asterisk [ * ] designates
function changed via software
* SQUELCH LEVEL
The purpose of the Squelch is to mute the speaker when no
signals are present. With the squelch correctly set, you will
only hear sound when a signal is present.
* TIME-OUT TIMER (TOT)
The TOT limits the length of a users transmission. The purpose
of the TOT is to prevent transmitting for a long period of time,
causing thermal damage to the radio. And alert will sound when
the limit for that transmission has been reached.
Scanning is used for hands off monitoring of your favorite
frequencies. When the transceiver options are set to SCAN (via
software), setting the channel selector to channel 16 directs
the radio to scan the selected channels from 1-16.
1. Transceiver stops scanning when a signal is detected and
continues when signal is gone.
2. If there are less than 2 channels, it cannot scan. (Go
3. On channel 16, Press and Hold the PTT and
MONI buttons while
switching ON the transceiver to turn the Scanning ON or OFF.
4. If FM Radio function is activated via
software, the radio will not scan. Note: There is no
actual FM Radio function in this radio, so this option should
always remain deactivated in software.
* BEAT SHIFT
(not available on some BF888S)
1. This option activates Voice Inversion.
2. When set, radios will no longer TX/RX normal audio on the
3. All radios in the group must have the option set on the same
channel to function properly between radios.
Baofeng Disclaimer: On the back of model BF888S aluminum case there is a
“K” tag or an “UPDATE” tag.
Any colored tags are just for the manufacturer’s internal use.
They are only used as a distinguishing mark for different
suppliers. There is no other practical significance and they are
unrelated to the scrambler.
Check your country's regulations regarding the use of scrambled transmissions.
* VOICE PROMPT
1. VP can be set ON/OFF via software.
2. On channel 10, Press and Hold the PTT and
MONI buttons while switching ON the transceiver to also Activate or Deactivate Voice Prompt.
3. On channel 15, Press and Hold the PTT and
MONI buttons while
switching ON the transceiver to change Voice Prompt Language (CHI / ENG)
4. Any channel 1-16, Press and Hold MONI only while
switching ON the transceiver will Deactivate Voice Prompt for
that session only.
* VOX (Voice Operated Transmit)
VOX eliminates the
need for using the PTT key to transmit. The transmitter is keyed
when the VOX circuit senses you are speaking into the
1. When operating the VOX function, set the VOX Gain level to
recognize the desired sound level.
2. If level is too sensitive, transceiver will key with noise in
3. If level is not sensitive enough, it will not pick up your
voice. Set level for smooth transmission.
4. On channel 1-5, Press and Hold the PTT
and MONI buttons while
switching ON the transceiver to turn the VOX ON or OFF.
* EMERGENCY ALARM
On channel 11, Press and Hold the PTT and MONI
switching ON the
transceiver to turn the Alarm Function ON or OFF.
This is a function for your receiver only. You will Not transmit
Reduces the battery power used when not receiving a signal.
Battery saver turns on automatically 10 seconds after no signal
is received and no operation is being performed.
BATTERY LOW ALERT
Reminds you that battery needs recharging. Alert tone will sound
and Red LED will blink.
When no signal is being received, Press and Hold the MONI. This
is helpful for adjusting volume level and receiving weak
CHANNEL LOCK-OUT (BCL)
BCL prevents you from transmitting on a channel if a signal is
present. Pressing the PTT switch while a channel is in use will
emit an alert tone and inhibit the transmitter.
* BEEP TONE
If turned on, radio will give short tone to indicate that
there is nothing programmed for that channel.
* CTCSS / DCS
CTCSS (Continuous Tone Coded Squelch System) or
CTCSS / DCS Description
You may sometimes want to hear calls only from specific persons
or groups. This option allows you to ignore unwanted calls from
others on the same frequency. These tones are sub-audible
(cannot be heard) and are selectable via software.
Note: These tones do NOT cause your conversation to be private
or scrambled. It only relieves you from listening to unwanted
SUMMARY of FUNCTION ACTIVATION
Ch 1-5, Press / Hold both PTT and MONI, and Power ON
VOX - ON / OFF.
Ch 10, Press / Hold both PTT and MONI, and Power ON
Voice Prompt - ON / OFF
Ch 11, Press / Hold both PTT and MONI, and Power ON
Alarm Function ON / OFF (if selected via SW)
Ch 12, Press / Hold both PTT and MONI, and Power ON
Locks Transmitter ON (Power
cycle to reset)
Ch 15, Press / Hold both PTT and MONI, and Power ON
Change Language (CHI / ENG)
Ch 16, Press / Hold both PTT and MONI, and Power ON
Scan ON / OFF (if option set via software)
Ch 1-16, Press / Hold MONI only and Power ON
Deactivates Voice Prompt for that
||400 - 470MHz
|RF Rated Power
(Closer to 3W)
||115mm x 60mm x 33mm
4.53" x 2.36" x 1.30"
||Check Battery Installation
and/or replace/charge battery.
with other members
|Verify that the frequency
and CTCSS tones are the same for all members. If all
checks out okay, make sure you are all within range.
Hearing other stations
||Change your CTCSS for that
channel. Change to another channel.
clearly hear members of my group, but my voice is
||Check if microphone is
blocked. If so, return radio to dealer for maintenance.
Sometimes your frequency is the same as the frequency of
turn on the radio, or it turns on and quickly shuts
||Check the battery contacts
on the radio. If they are broken or twisted, return your
radio to an authorized dealer for maintenance.
Complete information on Cables, Drivers, Software, etc
is available at