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AllStarLink Node Radio Interfaces

Building an AllStarLink or HamVOIP node requires a reliable connection between your radio and a PC or Raspberry Pi running AllStarLink software.

 

The XGGComms USB-DigiMode-3-Micro-URI provides the audio, PTT and COS signalling needed for dependable operation in simplex nodes, repeater links and other radio-over-IP projects.

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Designed around the widely supported CM108B USB audio codec, the Micro-URI offers a compact and robust solution without bulky external interface boxes. Mini-DIN, Sub-D and bare wire connection options are available, making it easy to integrate with a wide range of compatible radios.

Ideal For AllStarLink Nodes, HamVOIP And Repeater Projects

Whether you are building a new AllStarLink node or deploying a HamVOIP-based system, reliable audio and signalling connections are essential. The USB-DigiMode-3-Micro-URI provides transmit audio, receive audio, PTT and COS support in a single compact unit, helping simplify installation while maintaining dependable day-to-day operation.
 

This dedicated interface is suitable for Raspberry Pi and PC-based systems and is fully compatible with the CM108B support built into HamVOIP and AllStarLink software distributions.

USB-DigiMode-3-Micro-URI

Shown on the left is the custom XGGCOMMS PCB used in the USB-DigiMode-3-Micro-URI, with all electronics housed within the USB connector shell. On the right is the completed interface in the DB9 female connection version.

Buy the USB-DigiMode-3-Micro-URI interfaces from our Accessories Shop here

Designed specifically for AllStarLink and HamVOIP node projects, the USB-DigiMode-3-Micro-URI provides the audio, PTT and COS connections required between a compatible radio and a PC or Raspberry Pi running AllStarLink or HamVOIP software.

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At the heart of the design is the popular CM108B USB audio codec, with all electronics housed entirely within the USB connector shell for a compact and tidy installation without bulky external interface boxes. Driver-free operation under Linux, Windows and macOS makes the Micro-URI an ideal choice for Raspberry Pi based node systems and PC-based radio-over-IP applications.

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Unlike many solutions that rely on modified off-the-shelf USB sound cards, the Micro-URI uses a dedicated XGGCOMMS-designed PCB developed specifically for radio linking applications. This custom design provides a compact, robust and reliable interface for AllStarLink nodes, HamVOIP systems, simplex links and repeater projects.

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Support for both PTT and COS signalling ensures reliable integration with compatible radios and the HamVOIP SimpleUSB channel driver. Full compatibility with the signalling methods used by AllStarLink software makes configuration straightforward while maintaining dependable day-to-day operation.

The interface PDF connection and instruction manual is here

Key Features

  • Compact design with all electronics housed within the USB connector shell

  • CM108B USB audio codec fully supported by AllStarLink and HamVOIP

  • Driver-free operation under Linux, Windows and macOS

  • Dedicated XGGCOMMS-designed PCB

  • Radio PTT via CM108B GPIO Pin 3 as supported by AllStarLink and HamVOIP software

  • COS signalling via CM108B VOL DN input as supported by AllStarLink and HamVOIP software

  • Available with Mini-DIN, Sub-D and bare wire connection options

  • Ideal for Raspberry Pi and PC-based node projects

  • Suitable for simplex nodes, repeater links and radio-over-IP systems

Radio Connection Options

The USB-DigiMode-3-Micro-URI is available with three connection options to suit different radio installations:

 

DB9 Female Connector
Ideal for custom projects and radios already wired with a DB9 accessory connection. Supplied with a 10cm cable and provides audio, PTT and COS connections.

 

6-Pin Mini-DIN Data Plug
Supplied with a 1.5m cable and wired to the standard Yaesu, Icom and Kenwood data port pinout. This is the easiest option when connecting to radios equipped with a 6-pin Mini-DIN data socket.

 

Bare Wire Connection

Supplied with a 10cm cable with tinned wire ends, allowing you to fit your own connector or hard-wire directly into a radio or custom installation.

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