Hi G. Pin 4 or GPIO 4, pin 7? I do not understand what you are aiming for, but anyway, may be this could help: http://codeandlife.com/2012/07/03/benchmarking-raspberry-pi-gpio-speed/ Laura Checked by
Marcus, Wrong scale. I checked his bearings today (right axis!): around 10-12 degrees. That is the difference between Rosnay and St. Assise seen from Todmorden. Laura Sent from my MyopiPhone
Are you sure? Diurnal patterns from Kiel VLF Grappa look quite different: http://lf-radio.de/cgi-bin/ki/plot_channel.cgi?date=14-03-12&freq=21.7KHz http://lf-radio.de/cgi-bin/ki/plot_channel.cgi?date
Hi Markus, Looks impressive and encouraging... May be there are spurii from EFR visible at 14 kc (down-mixed/folded) and 9.9 kc (intermod DCF49/DCF39)? Laura Sent from my Watson-Watt-Phone
Hi Jay, Confirmed; supposing an unknown q-code primarily (°?°) Compared to transmissions in the past speed control is worse these days. Laura Sent from my Goldschmidt-Alternator
Hi Jay, Plotted a (raw!) histogram. Compared to MSF and DCF77 I found a maximum of field strengths around ~18 Hz below 17.2 kc/s. Laura Sent from my BayesPhone