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BFDX DMR digital two way radios BF-TD503 walkie talkie Dual mode (Analog & Digital) Analog & Digital mode adjustable, this is to meet different communication requirements. TDMA Channel capacity enlarged with TDMA function. Audio encryption TD-503 use audio encryption key to encode and decode calling signal in channel. One radio can only set one encryption key. Digital signaling. Support DMR standard single, group and all calling. Killing and other functions are also available. Single calling Single calling from point to point is available. Disable private communication to be heard by others. Group calling Enable free communication between group members. Member selection can be set through PC programming. All calling Calling can be received by all members from different group in same channel. No obstacle communication easily available to enable a free job site arrangement. Killed The function is to kill the lost two way radio or unit so that the radio or unit can’t TX and RX. “Killed” function is to protect the private calling to be heart from others. Monitor This function is to locate if there is any activity in channel or not. If there is any signal in this channel, user will hear reminder sound. Remote monitor Allow supervisor users to monitor the activity of radio via remote monitor function. This function also allows users to send the background noise to supervisor. Emergency remote monitor Allow supervisor to remote monitor the radio if the emergency alarm function of this radio is open. Under emergency remote monitor, rescuer can get useful information from the signal TXed by the radio and allow rescuer quickly make a rescue plan. If this function opened, other supervisor will remote monitor this radio even if supervise radio is without encoder of remote

Bfdx dmr digital two way radios bf-td503 walkie talkie

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Page 1: Bfdx dmr digital two way radios bf-td503 walkie talkie

BFDX DMR digital two way radios BF-TD503 walkie talkieDual mode (Analog & Digital)

Analog & Digital mode adjustable, this is to meet different communication requirements.

TDMA

Channel capacity enlarged with TDMA function.

Audio encryption

TD-503 use audio encryption key to encode and decode calling signal in channel. One radio can

only set one encryption key.

Digital signaling.

Support DMR standard single, group and all calling. Killing and other functions are also

available.

Single calling

Single calling from point to point is available. Disable private communication to be heard by

others.

Group calling

Enable free communication between group members. Member selection can be set through PC

programming.

All calling

Calling can be received by all members from different group in same channel. No obstacle

communication easily available to enable a free job site arrangement.

Killed

The function is to kill the lost two way radio or unit so that the radio or unit can’t TX and RX.

“Killed” function is to protect the private calling to be heart from others.

Monitor

This function is to locate if there is any activity in channel or not. If there is any signal in this

channel, user will hear reminder sound.

Remote monitor

Allow supervisor users to monitor the activity of radio via remote monitor function. This function

also allows users to send the background noise to supervisor.

Emergency remote monitor

Allow supervisor to remote monitor the radio if the emergency alarm function of this radio is

open. Under emergency remote monitor, rescuer can get useful information from the signal TXed

by the radio and allow rescuer quickly make a rescue plan. If this function opened, other

supervisor will remote monitor this radio even if supervise radio is without encoder of remote

Page 2: Bfdx dmr digital two way radios bf-td503 walkie talkie

monitor.

Channel scan

This allows users to cruise through set channels in order to find the one that your group is using.

You can also use this feature to quickly locate an “empty” channel for your group to use.

TOT

This is to prevent the radio from being TX for too long, and avoid the channel from being

occupied unconsciously.

Low battery indication

Allow users to change the battery on time.

Auto battery save

The radio will automatically come into battery saving mode if there is no any activity so as to

extend the standby time.

Noise suppression function

Eliminate the noise to get better audio and communication quality.

Manual dialing

Call out via manual ID dialing in keyboard.

Quick dialing

Allow users call out through quick dial.

PC Programming

Allow users to set the radio on PC via USB programming cable.

Detection

Allow users to remote detect whether the radio is under using via radio detective port.

Remote control

Allow users to remote control radio via radio control port.

SMS

Allow users to send and receive message.

Languages selectable

English and Chinese languages selectable.

Voice announcement

Voice announcement for radio statement.

Page 3: Bfdx dmr digital two way radios bf-td503 walkie talkie

Alarm function

The radio will alarm or silence alarm under emergency situation.

GPS

Allow users to locate the GPS coordinate. And radio can send out or check GPS coordinate.

CTCSS/CDCSS and STE

TD-503 support 39 standard CTCSS and 83 standard CDCSS setting, and also support non

standard CTCSS/CDCSS setting. CTCSS/CDCSS is to avoid the private communication from

being disturbed by other same channel users. It also eliminates the trail noise.

Duplex

Allow users to use the radio like telephone.

IP67

High audio quality.

TD-503 use advanced AMBE+2 vocoder, which highly improved the audio quality.

Page 4: Bfdx dmr digital two way radios bf-td503 walkie talkie

General partFrequency range: VHF:136-174MHz UHF:350-390 MHz UHF:400-470 MHz UHF:450-520MHzChannel capacity: 160Zone: 50Channel step: 12.5KHz/25KHzWorking voltage: 7.5VBatterycapacity: 2800 mAh

Battery working hours(5/5/90) Digital: 20 hours(GPS off)

Analog: 14 hours(GPSoff)

Frequency stability: ±1.5ppmAntenna impedance: 50 ohmSize: 133*62*35mm

Transmittance

Output power: VHF high :4.0W

VHF low :1.0W

UHF high :4.0W

UHF low:1.0W

4FSK modulation: 12.5kHz data only:7K60FXD

12.5kHz data and voice: 7K60FXE

FM Modulation: 12.5 kHz:8K50F3E;25 kHz:16KΦF3E;

Modulation limitation: +/- 2.5kHz @ 12.5kHz; +/- 5kHz @ 25kHzFM noise: -40dB

Page 5: Bfdx dmr digital two way radios bf-td503 walkie talkie

Spurious emission: -36 dBm≤1GHz/-30 dBm≥1GHz

Adjacent power ≤-60dB

Frequency response: +1/-3 dBAudio distort: 3%Digital vocoder: AMBE+2™

Receive

Digital Sensitivity: 5% BER:0.25 uV

Analog sensitivity: 0.25 uV (12 dB SINAD)Intermodulation: 60dBAdjacent selectivity: 60 dBSpurious suppression: 70 dBFM noise: -40dBFrequency response: +1/-3 dBAudio power: 1.5WAudio distortion: 3% (typical)Conduction radiation: -57dBm

GPS precision: Accuracy of position ≤-10m(with good condition)

TTFF (first location)cold boot < 1 minute(good signal)

TTFF (first location)hot boot < 10 seconds(good signal)

Working conditions

Working temperature: -20℃—60℃

Storage temperature: -30℃—+85℃

Damp proof: According MIL-STD-810C/D/E/FShock and vibration: According MIL-STD-810C/D/E/FIP rate: IP67

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