DL2MAN Manuel of the hugely popular homebrew transceiver Sandwich uSDX has announced this would be the last version of Sandwich uSDX from him. So, why after 2 years of continuous development stop the project – According to DL2MAN “Because I feel, this concept around 8bit microcontroller reached its beautiful limit. So I want to build the best version of it, aiming towards emergency pocket radio, and then move on to something different.”
Manuel has mentioned a couple of key features this final version of uSDX Sandwich Version
- It will no longer be compatible with former versions of uSDX.
- Same credit-card (85x55mm) sized PCB´s -but much lower stack height. Aiming for 20mm, for true pocked format.
- Ready Sandwich only stack of 2 boards.
- IO Board and Mainboard combined on one board
- Micro USB Connector (with USB Chip for CAT Control, PTT Control for eg keying CW with N1MM Contest Software, and also for emergency power supply -power bank- at reduced output power).
- When the 12V Supply is connected, this is the main power supply without needing to disconnect USB
- There will be SWR Meter on board and some voltage/current measurement hardware to calculate the efficiency of PA in Software (Alignment Help)
- SWR measurement also will prevent you from accidentally blowing PA on a bad or no antenna.
- RF Board will be 5-Band Board (80m-20m) with 3x BS170, but I plan to provide additional Footprints, so you can retrofit it with whatever you want.
Manuel has decided to release this final release under CC BY-SA 4.0 License. This makes it a lot easier for various amateur enthusiasts to contribute to the project and even sell commercial kits adhering to the license.
You can read Manuel message here: https://groups.io/g/ucx/message/10153
The original uSDX started out as a modification for QCX (QCX-SSB) by Guido, PE1NNZ
If you have no idea what is Sandwich uSDX – You should read this dl2man.de
Are you a newbie to the world of Amateur Radio? Probably you should read this too Top Amateur Transceiver Kits You Can Buy