Two-slot TDMA
Belonging to the DMR Tier II category, which covers licensed conventional systems, these radios are specified for 2-slot Time Division Multiple Access (TDMA) operation in 12.5 kHz channels. This means they can offer greater spectrum efficiency.

Two-in-One, Digital & Analogue
These DMR radios can operate in both digital and FM analogue modes, switching automatically as needed. Interoperability with legacy analogue radios allows organisations to migrate to full digital at their own pace.

Dual-slot Direct Mode
Up to two simultaneous direct-mode subscriber calls can be supported in a 12.5 kHz channel, without requiring a repeater, thus doubling channel capacity.

Call Interruption
In an emergency or whenever a user needs to interrupt a call, Call Interrupt is available in both direct and repeater modes, while encoding or decoding. Also featured are emergency functions to help protect staff in remote areas, etc.

Tough All-terrain
These TK-D740/D840 mobile radios conform to MIL-STD C/D/E/F/G standards for ruggedness, and are IP54 rated for water and dust intrusion, making them more than capable of withstanding harsh operating conditions.*

*Applies only when using a microphone KMC-35 or KMC-36.

2-Digit LED Channel Display with Brightness Control
The large 2-digit LED display provides a clear indication of which channel is being used, and the brightness level can be adjusted (high/low) to suit the time of day and ambient light conditions. The front panel also features 9 programmable function keys for enhanced operating ease.

Programmable Blue LED
The blue LED indicator can be customised to provide useful status information. For example, it can be used in combination with the orange LED for Selective Call differentiation.

Clear, Powerful Audio
A radio’s most important quality is clarity – being able to hear, loud and clear, what the other party is saying, and these mobiles deliver just that. For instance, the AMBE+2™ VOCODER technology accurately replicates natural human speech nuances for superior voice quality, even with high levels of ambient noise. Additionally, Voice Announcement can confirm the channel number, so there is no need to look at the display. English is the default language, but Spanish, French, German, Italian, Dutch and Russian are also available.

5-Tone Signalling
A series of programmed audio tones is used to specify one or more radios and initiate a conversation; all other radios will remain muted. Several signalling formats are available.

• Max. 128 ch in 4 zones (32 ch per zone)
• Wide 70 MHz UHF coverage
• 25-5 W Output
• External D-sub 15-pin (DE-15) interface
• External speaker connector (3.5 mm diameter phone jack)
• Audio output power 4 W @ 4Ω
• GPS connectivity (future firmware update)
• Single zone and Normal scanning functions
• Horn alert/P.A. function
• Ignition sensing
• Password protection (read/overwrite)
• Minimum volume setting
• Embedded message
• Selective call alert LED
• Late entry
• Analogue signalling: QT/DQT, FleetSync,
• 5-tone signalling
• Compander per channel
• Squelch level