Hi,
For a while now our local repeater PI2EHV has been capable of receiving
both analog FM and FreeDV mode 2400B.
However the amount of digital users is low (not a big surprise).
Inspired by the SM1000 I have been thinking about a project to make
using it easier: A small handheld capable of mode 2400B.
Nothing really fancy, but it should be able to show of some features
(like FPRS position reports interleaved in an audio stream) while making
communication in the field as simple as possible. And of course it
should be an open design. Since the inspiration came from the SM1000 I
would like to call it the 'HT1000'.
The basic design would consist of:
- DRA818 FM transceiver module
- Small GPS receiver
- LiPo battery
- Atmel ATSAME70 cpu
- Speaker & mic
- Display and controls
- Glue circuitry to let it work together
- 3D printed housing
As of last night the first step is working: an ATSAME70 running
freedv_rx() and freedv_tx() between two AD converters and two DA
converters. Next step will be connect a DRA818 module so I can actually
test on air.
73,
Jeroen PE1RXQ
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