Break-out & interface board for the Dorji DRA818 amateur radio transceiver modules
Adobe Portable Document Format - 50.20 kB - 03/10/2017 at 13:41
Current XD rev performing well. Software performs as CW beacon. There were some issues with parasitic RF swamping-out mic-in which was solved by not using a directly connected rubber ducky.. XE version of board will resolve this by isolating GND area under Dorji with inductors.
Planning on a bit of a pivot. The 2nd version will be much simpler breakout board, making the design usable with any 3.3V microcontroller the user chooses:
The first version of the board was assembled and tested. A few modifications were required for full operation:
Basic requirements were established. DRA818 is a new one-of-a-kind VHF Ham transceiver on a chip. It needed to be combined with a capable applications processor and local communications capability. The Arduino MKR1000 was chosen as it provided a turn-key solution. Turn-around time for the initial prototype was minimized by using an all-module approach.