Tuesday, May 07, 2013

Raspberry/Beagle/Core Benchmarks

Measured the other day using iPython:

iPython's "timeit" function is hardly the last word in benchmarking, but it can be very useful if you're thinking about Python applications.  Raspberry Pi is very powerful compared to Arduino, say, but very slow compared to modern desktop machines.   No surprises, but I haven't seen relative benchmarks before.

Saturday, May 04, 2013

Lousy Saturday on 40 meters

Solar weather (M class flare) makes the low HF bands very quiet this morning! Some day I have to dig in and understand the scale on this map.  It says we're affected by "1 dB" on 40 meters, but I'd say it's more like 30 dB from listening on the band.

Check http://www.swpc.noaa.gov/drap/global.html for the latest.