Maldol DB-25-M User manual

USER’S MANUAL
VHF-UHF
Mobile transceiver
for radioamateur

This appliance is marked with the symbol for selecve sorng of waste
electrical and electronicequipment. This meansthahis product must be
removed by means of a selecve collecon system according to European
Direcve 2012/19 / EU either in order to be recycled or dismantled to
reduce any impact on the environment. For more informaon you can
contact your distributor, seller or your local or regional administraon.
Electronic products which have not been subject to selecve collecon
are potenally dangerous to the environment and public health due to
the possible presence of dangerous substances.
Do not dispose of unusable packaging in household waste; dispose of
them in containers intended for recycling.
In order to accomplish with RF exposure requirements for mobile transming
A devices, there must be a minimum distance of 20 cm between the antenna
and the people.
This device complies with Direcve 2011/65 / EU (RoHS) of the European Parliament and of the
Council of 8 June 2011 restricng the use of certain hazardous substances in electrical and
electronic equipment.

Areas de uso permido / List of praccable area / Zone d’ulisaon
Betroenen Länder / Lista delle aree autorizzate

USER’S MANUAL1
 SAFETY INFORMATION
Please observe the following precauons to prevent ?re. personal iniury, damage to the radio:
• Don‘ t use this machine when driving.
• This radio is designed to use 13.8V dc voltage, do not use the 24V power supply to the mobile
radio.
• Please do not place machine in the dust, moisture or water splashing.
• If there is any electromagnec interference, please keep the mobile radio away from the
sources such as TV set, engine generator etc.
• Do not expose the mobile radio to long periods of direct sunlight, for example on the
dashboard of a vehicle or close to heang appliances.
• If the mobile radio generate any smoke or strange smell, please turn o the power supply
immediately and make sure all is safe, then you can send the unit to the nearest aer-sale
center tor inspecon or repairment.
• Do not keep transming with high power output tor too long me, which may lead to
overheang and cause auto power o or failure.

MALDOL DB-25-M 2
PRODUCT INSPECTION
Welcome to use our mobile radio, before operaon, it is recommended that you:
• Please check the package is in good condion without any damage.
• Please unpack the package box carefully and check that all items are included.
• If you nd any items are missing or have been damaged during shipment, please contact your
dealer immediatly.
Standard accessories
Transceiver Microphone Mounng
bracket
Cigar-plug
power cable
Screws and fuse

USER’S MANUAL3
PRODUCT DESCRIPTION
1 Progress of the knob
2 Transmit indicator
3 Funcon keys
4 Call key
5 Monitor funcon
6 Power key
7 Power indicator
8 Volume Knob
9 Microphone Connector
10 FM radio funcon key
11 Exit the AB signal switching,
alarm funcon
12 Channel switching
13 Display screen

MALDOL DB-25-M 4
Front Panel Controls and Switches
[ ]: Press to enter menu selecon mode.
[ ]: In standby mode, press to send caller ID of selected signaling; in transming mode, press
to send repeater acvaon signaling..
[ ]: Press to turn on the squelch, repeater to turn o the squelch.
[ ]: Press and hold the key to turn on or turn o the power.
[ ]: Press to switch between channel mode and frequency mode.
[ ]: Press to select A band, B band or exit. Press and hold for 2 seconds to acvate alarm
funcon.
[ ]: Press to enter or exit FM radio mode.
Frequency Range Seng
Press and hold [F] key to turn on the radio and it will display ‘PASSWD’ on the screen, then input
correct password (six digits length) and it will display ‘185 179’ , at this me you can set all three
bands frequency range including VHF 135—179MHz and UHF 400—520MHz.
Example: For VHF 13 179, you can input ‘136174’ ( 136-174MHz).
For UHF 400 520, you can input ‘ 400 480‘ (400—480MHz).
Note: Aer frequency range is successfully programmed, users can operate only among the range.
Password Setup
Users can setup a password(6 digits) for PC program, please keep in mind or you are not allowed
to read or write the data without it.
CALL
MONI
V/M
EXIT/AB
FM
F

USER’S MANUAL5
Channel Memory
Same TX RX frequency channel memory
1. Use keypad write require frequency, for example 145.000, press [F] key to menu 36,
press [F] key to show 001 ashing (choose channel number), press [F] key again to
show CH-001, press [EXIT] to complete the memory and exit.
2. Use keypad write require frequency, for example 146.000, press [F] key to menu 36,
press [F] key to show 002 ashing (choose channel number), press [F] key again to
show CH-002, press [EXIT] to complete the memory and exit.
3. Part A display channel: under menu 29, press [F] key to show, press [F] key FREQ
ashing, made choice by switch. CH shows channel, FREQ shows frequency and
channel number, press [F] key to complete.
4. Part B display channel: under menu 30 press [F] key to show, press [F] key FREQ
ashing, made choice by switch. CH shows channel, FREQ shows frequency and
channel number, press [F] key to complete.
5. Press PTT to exit menu, use [EXIT/AB] key to switch.

MALDOL DB-25-M 6
Dierent TX RX frequency channel memory (connect repeater)
1. Use keypad write require frequency, for example 164.500, press [F] key to menu 36, show
MEM-CH-001 press [H key to show 001 ashing , press [F] key again to show CH-001,
complete RX memory, press [EXIT].
2. Use keypad write require frequency, for example 158.800, press [F] key to menu 36,
showMEM-CH-001 press [F] key to show 001 ashing , press [F] key again complete
dierent frequency memory and press [EXIT].
Dierent TX RX frequency with CTSCC/DCS channel memory (connect repeater)
(For example RX 465.525 CTCSS 67.0 TX 455.525 DCS D023N)
1. Press [F] key to menu I1, show R-CTSCC/OFF, press [F] key show OFF ashing, use switch
choose
2. RX CTCSS 67.0, press [F] key complete.
3. Use switch choose menu 12 T-DCS/OFF, press [F] key show OFF ashing, choose DCS
DO23N, press [F] key conrm and press [EXIT] to complete.
4. Use keypad to write RX frequency 465.525, press [F] key to menu 36, show MEM-CH-001,
press [F] key to 001 ashing, press [F] key to conrm, display CH-001, RX memory
complete, press [EXIT].
5. Use keypad to write TX frequency, press [F] key to menu 36, show MEM-CH-001, press [F]
key let CH001 ashing. press [F] key conrm and press [EXIT] key to complete TX memory.

USER’S MANUAL7
MENU FUNCTION SETUP
Menu funcon setup (can be set by speaker microphone)
1.[H]+ [O]: TDR (Dual standby funcon): Enable/Disable dual standby funcon. ON: TDR enabled. OFF:
TDR disabled, only current band is in standby mode. Press [F] key to save the seng.
2.[F] + [1]: STEP: In frequency mode, select desired channel step from 5KHz, 6.25KHz, 10KHz, 12.5KHz
and 25KHz. Press [F] key to save the seng.
3.[F] + [2]: SQL: Squelch level setup, totally 10 levels. 0: Squelch o. 1-9: Level 1-9 selecve. Press [F]
key to save the seng.
4.[F] + [3]: TXP: Transming power output setup, High/Low power selecve. Press [F] key to save the
seng.
5.[F] + [4]: SCH: Scrambler setup. On: Scrambler funcon acvated,to realize audio encrypon. OFF:
Scrambler funcon turned o(0ponal). Press [F] key to save the seng.
6.[F] + [5]: TOT: Time out mer, 15-6005 selecve with step 15s. Press [F] key to save the seng.
7.[F] + [6]: TOA: Time out mer pre-alert setup. OFF/1-10s selecve, which will alert by LED ashing
before transming end. Press [F] key to save the seng,
8.[F] + [7]: WN: Wide/Narrow bandwidth 25Khz/12.5KHz selecve. Press [F] key to save the seng.
9.[F] + [8]: ABR: LCD backlight me setup. OFF: LCD backlight will always on. 1-50s selecve, LCD
backlight will automacally turn o aer pre-programmed me. Press [F] key t save the seng.
10.[F] + [9]: BEEP: Key tone ON/OFF setup. Press [F] key to save the seng.
11.[F] + [1] + [O]: R-DCS: DCS decode setup, normal code D023N—D754N and inverted code
D023ID754I selecve. Press [F] key to save the seng.

MALDOL DB-25-M 8
12.[F] + [1] + [1]: R-CTCS: CTCSS decode setup: CTCSS OFF and standard code 67Hz-254.1Hz are
selecve, users can also enter desired CTCSS (Both standard and non-standard) by speaker
microphone. Press [F] key to save the seng.
13.[F] + [1] + [2]: T-DCS: DCS encode setup, normal code D023N-D754N and inverted code D023I-D754I
selecve. Press [F] key to save the seng.
14.[F] + [1] + [3]: T-CTCS: CTCSS decode setup: CTCSS OFF and standard code 67Hz~254.1Hz are
selecve, users can also enter desired CTCSS (Both standard and non-standard) by speaker
microphone. Press [F] key to save the seng.
15.[F] + [1] + [4]: DTMFST: DTMF side tone setup, OFF/KET/ANI/BOTH selecve. OFF: DTMF tone will
not be emied from the speaker. KET: DTMF tone will be emied from the speaker only when pressing
side key to transmit DTMF code. ANI: DTMF tone will be emied from the speaker only when DTMF
automacally transmied. BOTH: DTMF tone will be emied from the speaker for both KEY and ANI.
Press [F] key to save the seng.
16.[F] + [1] + [5]: BCL: Busy channel lockout. OFF: The mobile radio can transmit at any me. ON: User
will not be able to transmit on the busy channel. A beep tone warns you that the channel is busy when
you put the PTT switch on a busy channel. Press [F] key to save the seng.
17.[F] + [1] + [6]: SC-ADD: Scan add setup. OFF: Deletes the channel from the scan list. ON: Add the
channel to the scan list. Press [F] key to save the seng.
18.[F] + [1] + [7]: PRI-SC: Priority scan setup. OFF: No priority channel. On: There is a priority channel
which you can select in the oponal features window or by manual program. Press [F] key to save the
seng.

USER’S MANUAL9
19.[F] + [1] + [B]: PRI-CH: Priority channel scan setup. Select a priority channel from pre-programmed
CH001-199. Press [F] key to save the seng.
20.[F] + [1] + [9]: SC-REV: Scan-Resume Mode: To: Time scan, the scanner will halt on a signal it
encounters for a while and then resume to scan. CO: Carrier Scan, the scanner will halt on a signal it
encounters and resume to scan aer the signal disappear. SE: Search Scam, the scanner will halt on a
signal with matched signaling it encounters resume to scan aer it disappear. Press [F] key to save the
seng.
21 .[F] + [2] + [0]: OPTSIG: Oponal Signaling Setup. OFF/2 TONE/5 TONE/DTMF selecve. Press [F] to
save the seng.
22.{F] + [2] + [1]: SPMUTE: Speaker Mute Setup. QT: Channel with this opon will open the speaker
when matched QT/DOT received. AND: Channel will have to check for both QT/DQT and Oponal
Signaling in order to open its speaker. OR: Channel will check for either matched QT/DQT or matched
Oponal Signaling to open its speaker. Press [F] key to save the seng.
23.[F] + [2] + [2]: PTT-lD: PTT-lD setup: OFF: PTT-lD is disabled. BOT: Press [PTT] to deliver ID code.
EOT: Release [PTT] to deliver ID code.BOTH: Press or Release [PTT] to deliver ID code. (ID code are
PC soware pre-programmed, user can select desired ID code in Menu 24 manually). Press [F] to save
the seng.
24.[F] + [2] + [3]: PTT-ID: PTT-IDD transmit delay me setup. Select desired delay me during 0—30
seconds. Press [F] to save the seng.
25.[F] + [2] + [4]: S-INFO: Oponal signaling informaon and auto-dial memory. 1-15 groups oponal
signaling encode/decode memories, can be programmed only by PC soltware.

MALDOL DB-25-M 10
26.[F] + [2] + [5]: EMC-TP: Emergency alarm mode setup. ALARM: The radio emits Emergency Alarm
only. ANI: The radio sends Emergency Code and ANl Code to other group members. BOTH: The radio
sends Emergency Alarm, Emergency Code and ANI Code simultaneously. Press [F] to save the seng.
27.[F] + [2] + [6]: EMC-CH: Emergency Alarm channel setup. Select any channel from pre-programmed
CH001—199 as specied emergency channel. Press [F] to save the seng.
28.[F] + [2] + [7]: RING-T: Ring me setup. OFF: Ring funcon is disabled. The radio will ring in pre-
programmed me (1-10s selecve) aer received matched opon signaling. Press [F] to save the
seng.
29.[F] + [2] + [8]: CHANME: Channel name edion (Alphanumeric). User is able to edit the channel
name in channel mode, press [F] to save the seng,
30.[F] + [2] + [9]: CA-MDF: A band channel display mode. FREQ: Frequency mode. CH: Channel mode.
Name: Name display (alphanumeric display and PC programmable only). Press [F] to save the seng,
31.[F] + [3] + [O]: CB-MDF: B band channel display mode. FREQ: Frequency mode. CH: Channel mode.
Name: Name display (alphanumeric display and PC programmable only). Press [F] to save the seng.
32.[F] + [3] + [1]: CB-MDF: AUTOLK: Keypad automac lockout, ON/OFF selecve, press [F] to save the
seng.
33.[F] + [3] + [2]: PONMSG: Power-on message display setup. FULL: Full screen display when power
on. MSG: Display specied message when power on. BATl’—V: Display baery voltage when power on.
Press [F] to save the seng.
34.[F] + [3] + [3]: WT-LED: Standby backlight color setup. OFF/BLUE/ORANGE/PURPLE selecve. press
[F] to save the seng.

USER’S MANUAL11
35.[F] + [3] + [4]: RX-LED: RX (receiving) backlight color setup. OFF/BLUE/ORANGE/PURPLE selecve,
press [F] to save the seng.
36.[F] + [3] + [5]: TX-LED: TX (transming) backlight color setup. OFF/BLUE/ORANGE/PURPLE selecve,
press [F] to save the seng.
37.[F] + [3] + [6]: MEM-CH: Memory channel storage setup. Select a channel (000-199) to store desired
frequency, the channel (000-199) with ’CH’ was programmed with frequency earlier. Press [F] to save
the seng.
38.[F] + [3] + [7]: DEL-CH: Memow channel delete setup. Delete any channel from 000-199, the
channel number without ‘CH‘ is not programmed. Press [F] to save the seng.
39.[F] + [3] + [8]: SFT-D: Oset direcon setup: Oset is valid in frequency mode (VFO mode). OFF:
Oset is turned o, TX frequency is same as RX frequency. ‘+‘ Plus oset, means TX frequency is higher
than RX frequency. ‘-’ : Minus oset, means TX frequency is lower than RX frequency. Press [F] to save
the seng.
40.[F] + [3] + [9]: OFFSET: Oset frequency setup. Oset frequency range is 00.000-69.990MHz
selecve, press [F] to save the seng.
41 .[F] + [4] + [O]: ANI: ANI code setup. ANI code is only PC soware programmable.
42.[F] + [4] + [1]: ANI-L: Length of ANI Code. Select the length of ANI code 3,4,5, press [F] to save the
seng.
43.[F] + [4] + [2]: REP-S: Repeater acvaon by oponal signaling setup. When radio is transming,
press [CALL] to send 1000Hz1450Hz/1750Hz/2100Hz to acvate repeater funcon. Press [F] to save the
seng.

MALDOL DB-25-M 12
[F] + [4] + [3]: REP-M: Repeater transpond setup.OFF: The funcon is disabled. CARRl: Repeater
transpond by receiving matched carrier. CTDCS: Repeater transpon by receiving matched CTCSS/
DCS. TONE: Repeater transpon by receiving matched tone. DTMF: Repeater transpond by
receiving matched DTMF code. Press [F] to save the seng.
45.[F] + [4] + [4]: TDR-AB: Dual standby funcon(TDFt) setup‘ OFF: The funcon is disabled, radio
always stay on the main band. ON: Radio will automacally switch to the channel which receiving
matched signals. Press [F] to save the seng.
46.[F] + [4] + [5]: SET: Squelch tai|—e|iminaon. ON: Enable squelch tail-eliminated funcon.
OFF: Disable squelch tail-eliminated funcon. lf radio work with a repeater, please turn o this
tuncon. Press [F] to save the seng.
47.[F] + [4] + [6]: RP-STE: Repeater squelch tall-eliminaon setup. OFF: This funcon is disabled.
1-10 indicate squelch tail length, used to eliminated squelch tail noise produced because of
repeater delay. Press [F] to save the seng.
48.[F] + [4] + [7]: RPT-DL: Delay me to receive repeater signal setup. OFF: Disabled this funcon.
1-10: Select delay me to receive repeater signal. Press [F] to save the seng.
49.[F] + [4] + [B]: RESER: Reset setup. VFO: Reset the menu mode to factory default seng. ALL:
Reset all memories and other sengs to factory default seng. Press [EXIT/AB] to exit aer
seng.

USER’S MANUAL13
Manual Memory Channel Storage and Deleon Operaon
Memory Channel Storage:
1. lnput desired frequency by keypad, while operang in VFO mode. E.g.: 435.125MHz, just input
4,3,5,1,2,5.
2. Select desired RX CTCSS/DCS (Refer to menu 10 and 11), select desired TX CTCSS/DCS (Refer to
menu 12 and 13). E.g.: Press [F] + [1] + [1] + [F] + [DOWN] to select RX CTCSS 67.0Hz, press [F] +
[1] + [1] + [F] + [DOWN] to select RX cross 67.0Hz, press [F] + [1] + [3] + [F] + [DOWN] to select TX
cross 67.0Hz, press [F] + [EXIT/AB] to save the seng. (Select OFF then no CTCSS/DCS is program-
med).
3. Reter to menu 36 to store memory channel. Press [F] + [3] + [6] + [F] + [UP] to store memory
channel informaon.
Memory Channel Deleon:
Refer to menu 37 for memory channel deleon. Press [F] + [3] + [7] + [F] + [UP] to select desired chan-
nel + [F] to delete the memory channel.
FM Radio Memory Channel Storage
FM radio memory channel and its corresponding channel name is PC programmable. In FM mode, user
can press [*] to auto search FM signal.
Keypad Lock-out
In standby mode, press and hold [#] for 2 seconds to turn on/o keypad lock.
Transming repeater signaling
Select desired repeater signaling tone ( Four tones selecve).

MALDOL DB-25-M 14
Press [F] + [4] + [2] + [F] + [UP] to select desired repeater signaling tone + [F] to store. Press [PTT] +
[CALL] to emit pre-programmed repeater signaling tone.
PTT-lD Seng
PTT-ID code is pre-programmed by PC soware.
1. Reter to menu 20 to select the desired signaling. Press [F] + [2] + [0] + [F] + [UP]/[DOWN] to select
desired signaling + [F] to save the sengs.
2. Refer to menu 22 to set PTT transmit me. Press [F] + [2] + [2] + [F] + [UP]/[DOWN] to select PTT-
ID
3. transmit me + [F] to save the sengs.
4. Refer to menu 23 to select PTT transmit me. Press [F] + [2] + [3] + [F] + [UP]/[DOWN] to select
delete me + [F] to save the sengs.
5. Press [PTT] to send the programmed ID code.
Oponal Signaling Setup
DTMF Signaling Setup
This radio is capable of DTMF encode/decode feature. User can program the desired DTMF code by PC
program.
DTMF Signaling
If the radio is pre-programmed with DTMF signaling code, when it receive a matched code it will alert
and display the corresponding code, also radios van communicate with each other in valid me. (ID
code is programmable by PC soware.)

USER’S MANUAL15
Patrol Funcon
When receiving matched DTMF signaling which is same as pre-programmed patrol code,the radio
will emit self ID code which will display on master control radio.
This funcon is able to select to be or not to be controlled by master ID code, this funcon is not
controlled by RX signaling.(Patrol code is programmable by PC soware.)
Monitor Funcon
When receiving matached DTMF signaling which is same as pre-programmed monitor code, the
radio will transmit to monitor the surrounding voice. This funcon is able to select to be or not to
be controlled by master ID code, this funcon is not controlled by RX signaling.(Monitor code is
programmable by PC soware.)
Remote stun
When receiving matched DTMF signaling which is same as pre-programmed remote stun code,
transming is disabled, it will also alert on the display mode. The radio will restore to work normally
only aer remote receive. This funcon is able to select to be or not to be controlled by master
ID code, this funcon is not controlled by RX signaling.(Ftemote stun code is programmable by PC
soware.)
Remote Kill
When receiving matched DTMF signaling which is same as pre-programmed remote kill code,
transming, receiving and all acvies will be disable, it will also alert on the display mode. The
radio will restore to work normally only aer remote revived. This funcon is able to select to be or
not to be controlled by master

MALDOL DB-25-M 16
ID code, this funcon is not controlled by RX signaling. (Remote kill code is programmable by PC
soware.)
Remote Revive
When receiving matched DTMF signaling which is same as pre-programmed remote revive code, the
radio will be revived and restore to work normally. This funcon is able to select to be or not to be
controlled by master ID code, this funcon is not controlled by RX signaling.(Ftemote revive code is
programmable by PC soware.)
Emergency Alarm
When receiving matched DTMF signaling which is same as pre-programmed emergency alarm code,
the radio will emit alarm‘ Emergency alarm mode and channel is PC programmable. This funcon is
able to select to be or not to be controlled. This funcon is not controlled by master ID code and FIX
signaling. (Emergency alarm code is programmable by PC soware.)
Signaling controlled by master ID; Funcon will be implemented only when both signaling and
master ID matched.
Signaling no controlled by master ID format: signaling + # + informaon code.
Signaling controlled by master ID format:
signaling +  + master code + If + informaon code.
Transmit DTMF Signaling by [CALL]
1. Select DTMF signaling, press [F] + [2] + [0] + [F] + [UP]/[DOWN] to select DTMF signaling + [F] o
save sengs.