Q: Give us some history on the project.
A: Many moons ago Charley (W5BAA) got interested in building a DSP amateur transceiver. See March QEX 2011 article SDR2GO: A DSP Odyssey. Along the way the SDR2GO kit was created. In 2012 Charley and John (K5JHF) thought that an update using a STM32F4 processor might expand its capabilities. A discussion on the AQRP Yahoo group prompted Dave (VE7PKE) to start a conversation with John. A few weeks later version1 of the STM32-SDR project was in the hands of the group. Prompted by the success of the first board a second version that did not require the STM32 Discovery board was created.
Q: Who is involved in the project?
A:This project was started by Charley Hill (W5BAA) , John Fisher (K5JHF), Kees Talen (K5BCQ), and Milt Cram (W8NUE). It is a follow-on to the SDR2GO project. Dave Miller (VE7PKE) has created a PCB to support the project and Dr Brian Fraser has been adding his software talents to the project.
Q: What is the status of the boards?
A: Click here to order
Q: Are boards Available?
A: Click here to order
Q: Can I get a blank board?
A: Contact Dave VE7PKE if you are interested.
Q:Can I get involved?
A: We are looking for people to help out with code, documentation and testing, Drop Dave VE7PKE an email.
Q: What is the cost of the board?
A: Board with SMT parts installed (Kit-001) $149.00 USD
Q: If I buy Kit-001, what else is required to get an operational unit?
A: You need what is in KIT-002 See STM32-SDR Assembly Instructions for details , If you source them yourself cost is less than $40.00 USD at Digikey and Display supplier, or Order Kit-002 here
Q: What is your price for Kit-002
A: $60 USD
Q: What bandwidth is displayed on the screen?
A: The bandwidth is a function of the hardware and the software. Right now we are sampling at 8 kHz and displaying 4 kHz. The codec ADC and DAC both support up to 192 KHz rate. I believe the Processor is capable of reading data at that rate. The question will be can the processor do all the FFT's and other processing in time and keep up. The processor in the early benchmarks proved to be much more powerful than the DSPic's.
Q: What about this feature or that feature?
A: The current focus on the software side is to get a baseline of functionality completed and tested. The amount of effort to accomplish this cannot be understated. It is coming along nicely but by no means complete but has progressed to the point that "basic DSP and functionality" has been obtained to the point that on air QSO's have been made by myself and others in the development team. Does this mean that its ready for general consumption and that its at the same class as a commercial radio. NOPE. Every day things are moving ahead.