On Thu, 15 Mar 2012 20:02:31 +0100 (CET) Marek Peca <ma...@duch.cz> wrote:
> Of course I mean it should pick your 60kHz, as well as other systems known to > me: Japanese 40kHz, 60kHz, Swiss 75kHz, British 60kHz and possibly others. > Highly unsure about Russian 25kHz, even do not know, whether it is still on > air. HBG has been switched of earlier this year. So DCF77 and Alison are the only time LF senders left in continental europe. > 1. first, deliver simple USB audio sampling unit with 77.5kHz-proven ferrite > rod preamplifier, ready to work with 40..80kHz signals at least; > every processing within PC / Gnuradio framework; After the discussion here, i had a similar idea. I want to use the STM32F4xx for something bigger and bought two discovery boards to get used to them. But i didn't know what i want to do... it should be something usefull.. at least half way usefull. And the discussion here prodded me that i could do a SDR DCF77 with that. A 160MHz 32bit uC with hardware single precision floatingpoint is way more than fast enough to handle that :-) If i've time, i sketch the HW this weekend and build it as soon as i've time... And then it's just software :-) Attila Kinali -- Why does it take years to find the answers to the questions one should have asked long ago? _______________________________________________ time-nuts mailing list -- firstname.lastname@example.org To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.