DV4mini
Digital Amateur Radio





DV4mini-AMBE (70cm oder 2m):

is a tiny but powerful USB stick that can change any PC into a HOTSPOT and in addtition this AMBE version has a built-in AMBE vocoder which is virtually connected to the PC's sound card.

It does not require its own power supply as it is powered through the USB interface. It is be shipped with a comprehensive but simple to use software package which allows for the linking with DCS reflectors for both D-Star,C4FM and DMR reflectors.

Using a PC-headset you can
1. speak/listen to reflectors
2. speak/listen to transceivers via RF
(both simultaneously)

this is the ideal device if you don‘t have a transceiver on hand, as a monitor, testing of transceivers, playback via loudspeakers etc… only your imagination limits the possibilities.

Supported operating modes:

D-Star, DMR+, C4FM-Fusion

and experimental versions:

P25, PDMR und NXDN/DAS

The AMBE mode suppoerts: D-Star, DMR+, C4FM-Fusion, NXDN/DAS

Technical specs:

Transmitter:

  • Output Power: approx. 10mW

  • Modulation types: GMSK, 4FSK

  • 2m Version: 144 MHz to 440 MHz (reduced power above 150 MHz)
    70cm Version: 430 MHz to 440 MHz

  • Operating modes: D-Star, DMR, C4FM experimental: P25, PDMR, NXD/DAS

  • Harmonics: better then -30dBm

Receiver:

  • Sensitivity: -120dBm

  • 2m Version: 144 MHz to 440 MHz (reduced sensivity above 150 MHz)
    70cm Version: 430 MHz to 440 MHz

  • Modulation types: GMSK, 4FSK

  • Operating modes: D-Star, DMR, C4FM experimental: P25, PDMR, NXD/DAS

Digital specs:

  • Data rates: 9600 or 4800 Baud, depending on the operating mode

  • Bit rate HF: 4800 bit/s or 4800 dibits/s

  • TCXO: long term stability: better than 2.5 ppm

  • TCXO: short term stability: better than 1 ppm

Audio:

  • uses the PC soundcard to record/playback audio

  • requirements: a PC with a soundcard and a headset (or loadspeaker and a microphone)


Interfaces:

  • USB plug type A to connect direct, no cable needed

  • Power supplied via USB

  • Antenna SMA-socket, 50 Ohm (you need an external antenna)