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Only as a finished unit
ORDER INFO
The Technology
The DV-RPTR board is a DV Modem based on a powerful 32 Bit AVR
microcontroller. All DV functions are implemented in software.
The DV data from an FM transceiver is fed into the ADC input and then
processed with a couple of digital signal processing routines.
The connection to the PC is done via an USB interface. A driver is
available for Windows (XP, Vista, Win7 or even the upcoming Windows-8).
Under Linux the board is detected automatically and no driver is needed
(tested with Ubuntu and Cent-OS).
- our design needs no dedicated Modem IC (like CMX589)
- An integrated DFU 1.1 compatible bootloader allows firmware updates
for the end user.
- A couple of PC software packages support all functions required for
DV operation.
- This board is made for HAM operators for use as hotspot, or for DV
repeaters in various operating modes.
- This board and its corresponding software is open source and
available for everybody.
current firmware
The actual firmware (rptrfw) provide comfort openDV modem
functionality for PCs, notebooks and embedded (Linux) devices. All real
time parts and bitstream related functions encapsulated by rptrfw. This
allows simple and flexible software designs.
- full duplex (repeater) operation
- packet based serial communication protocol (PCP2), optional with CRC
checks
- large transmit buffer, gap-tolerant, space for 5s voicedata
- automatic smart PTT control - no special commands needed
planed / future capability's
stand-alone openDV repeater firmware
This firmware provides a stand-alone solution without a PC / internet
connection. A gateway access can be installed in a remote location using
a 2nd openDV system (transceiver, modem and PC) or by a 2nd DV-RPTR
connected serial to the first one. A 'network' of up to 4 DV-RPTR can be
installed to provide more than on voice channels / frequency-pairs /
modules.
- Analog / FM repeater firmware
- ultra-narrow-band / short-wave DV (unarDV)
- C4FM / 4FSK 4800baud (APCO P.25 Phase I)
- openDIGI C4FM 8000baud modem firmware
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