[hpsdr] Project proposal - Hermes

[Kevin Wheatley]

Following the outstanding success of Mercury and Penelope, and while  
investigating the verilog code for both, I had the insane idea of  
merging the verilog code of Mercury and Penelope into a single fpga! I  
played around with this idea for a while and the more I thought about  
it the more I liked the idea.

So here is the proposal, to develop a single board HPSDR based on the  
hardware of Mercury and Penelope and a single large fpga.

This board would have PC connectivity by USB. I’m planning to squeeze  
this all onto Euro Card sized PCB (100 x 160 mm), and if I utilize  
both sides I might even have room for a Pennywhistle type PA  :).

Basic specs so far (nothing cast in stone)

Fpga EP3C25Q240C (I think this is the largest without BGA pin out)
Mercury receive chain
Penelope transmit chain
USB2 to PC data transfer
Pennywhistle PA (if there’s room)
10Mhz on board with ext an option
Alex filter switching header
13.5V supply

I’ll post a provisional block diagram on the Wiki this week, and  
lastly, why the name?

Following the tradition of the HPSDR naming convention, I thought  
Hermes was appropriate as he was known for his invention and theft!

All comments welcome.

Kevin – M0KHZ

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