User Manual（FCC Version Draft）
This manual is applicable to the following product:
P53U,BF-1903,P53UH,P53UL,P53X，P54U,BF-1904,P54UM,P54G,P54X
Squelch permanently opened. Hold down the
Side key 1
to enable such function.
Scan
This function can be activated only by means of the optional programming software. To enable the Scan function, all 16
channels must be programmed. If you turn on the radio on channel 16, the scanning will automatically start. Whenever
any signal is detected, the scanning will stop on a busy channel. If the PTT is pressed, you will transmit on the latest busy
channel. Channel 16 is the priority channel; therefore if you don’t pick up any signal when you press PTT, the radio will
transmit on channel 16.
FM Radio (FM)
The frequency range for listening to the radio is 88-108MHz.
Press and hold the
Side key 1
to turn on the radio, and then use the
Side key 1
to search for radio stations automatically.
Press the
PTT
key or turn off the radio to exit the FM radio.
English/Chinese language switch
On the 15th channel, press and hold the
PTT + Side Key 1
to turn on the radio and switch the prompt language between
Chinese and English.
Squelch
The Squelch function suppresses noises on free channels and allows receiving even weak signals. P54U has 10 different
Squelch levels that can be set by programming software: 0 means that the Squelch is turned off; from level 1 to level 9 you
will have different levels of noise reduction. The higher is the level, the louder will be the Squelch. By default, the Squelch
level of P54U is set on level 4. Make sure you do not set an excessively high squelch level because in this case you may not
be able to receive weaker signals. On the other hand an excessively low Squelch value could enable the Squelch even
when no signals are present. Squelch must always be adjusted when no signals are present. The Time Out timer is settable
from 30 sec to 270 sec. only through the programming software. This feature is disabled by default.
CTCSS/DCS tones
CTCSS and DCS tones are similar to access codes and enable the radio to communicate only with the users that are tuned
on the same channel and have set the same code. For each channel, you can set up to 50 CTCSS tones and 210 DCS codes.
The CTCSS/DCS tones are a sort of “access codes” and enable the radio to communicate only with the other users set on
the same frequency and on the same CTCSS/DCS tone. Undesired signals coming from other stations set on the same
frequency but with different CTCSS/DCS tones won’t be received.
VOX
The VOX feature enables hands free conversations without using PTT: just speak in the direction of the microphone and
the communication will be automatically activated.
On channels 1, press and hold the
PTT + Side Key 1
key to turn on the radio and turn the VOX function on or off.
Accompanied by a voice prompt VOX ON or VOX OFF.
The VOX sensitivity can be adjusted in 5 different levels (1…9) through the programming software:
Level 2 is set by default and has the lowest VOX sensitivity, 9 is the lowest one.
With the programming software you can enable/disable the VOX feature and select the sensitivity levels.
On-line service and support
The Pofung website provides additional information about obtaining service or support for the Pofung line of two-way
radios and accessories. Visit:
Mail: [email protected]
