DM-1701 Digital Interphone Dual Time Slot Two-Way Radio 136-174MHz 400-520MHz 5W 999 Channels

The DM-1701 digital interphone offers practical two-way communication for professional users, event teams, and outdoor groups who need reliable contact over moderate distances. With dual time slot capability, this radio allows efficient use of frequencies by supporting two simultaneous conversations per channel. Operating across both VHF (136-174MHz) and UHF (400-520MHz) bands, it provides flexibility to match different licensing and coverage requirements. The 5-watt RF output and theoretical 5-10km range make it a solid choice for site coordination, security patrols, or recreational use where mobile phone coverage is limited. With 999 programmable channels, large teams can allocate dedicated frequencies without overlap. Power plug options include AU, EU, UK and US standards, ensuring compatibility with regional sockets.

Features and Construction

This digital radio is built around core specifications that support practical daily use. Its dual time slot design and broad frequency range allow for adaptable deployment in various communication environments.

Dual Time Slot Operation

By using both time slots per frequency, the DM-1701 effectively doubles channel capacity. This means two separate conversations can take place on the same frequency at the same time, reducing the need for multiple channels and improving spectrum efficiency. It is particularly useful for teams that need to share a frequency without interference.

Wide Frequency Coverage

The radio covers 136-174MHz in VHF and 400-520MHz in UHF, giving users access to both common commercial and amateur radio bands. This dual-band capability makes the device suitable for different regions and licensing conditions, and allows switching between bands depending on terrain or building penetration needs.

Power and Range

With 5 watts of RF output power, the DM-1701 delivers enough signal strength for reliable communication across its stated theoretical range. The rechargeable lithium battery provides cord-free operation for extended shifts.

5W Output and 5-10km Range

The 5-watt transmission power supports a theoretical communication distance of 5 to 10 kilometres in open environments. Actual range will vary with terrain, buildings, and atmospheric conditions, but this power level is typical for mid-range handheld two-way radios.

Rechargeable Lithium Battery

Power is supplied by a lithium battery, which can be recharged using the included adapter. The battery eliminates the need for disposable cells and allows for daily reuse. Specific capacity and runtime are not stated in the source text.

Channel Capacity and Organisation

With 999 channels, the DM-1701 can accommodate large user groups or multiple teams operating on separate frequencies. This makes it a practical choice for coordinated deployments.

999 Programmable Channels

Each channel can be programmed individually according to the user's frequency plan. This high channel count supports complex setups where different groups need dedicated talk paths without sharing, reducing congestion and confusion.

Regional Power Options

The device is available with AU, EU, UK or US power plug configurations, ensuring the charger works with local mains sockets. This regional flexibility makes the interphone suitable for purchase in various markets without needing an additional travel adapter.