"If you want to screw up a radar signal, all you have to do is send a return signal on its frequency which blocks out the echos. Hams, from the earliest woodpecker days, have been driving the monster off their bands by getting on the frequency and sending properly spaced dots back. The screen somewhere in Russia blanks out and the operators utter some Russian oaths and change the frequency to get rid of the interference."
Miami Herald (1982) https://www.qsl.net/n1irz/woodpeck.html #amateurradio
Putting my bins out in the standard #Australian configuration, with recycling and kangaroos separated from general waste.
Blog: Mount Anne, Jan 2019 (SOTA) https://thomask.sdf.org/blog/2019/01/14/mount-anne-jan-2019-sota.html
My favourite shot from the weekend. That's Mount Anne at the back (#SOTA VK7/SW-001). A few hours earlier I went up there and made 5 contacts with VK2/VK3. I think 40 wasn't fully open - mostly S2-5 reports but we got through. Not an easy summit to reach, especially with a squid pole in one hand. #amateurradio #bushwalking
I am 98% certain one of the recordings of Dvořák's New World Symphony available on iTunes (the one I liked most, of course) has an OSX "finished copying file" sound about 10 minutes into the last movement. I can't explain how that would happen but it's a really weird sound for an orchestra to make by accident (like flicking a taut wooden ruler off the side of a desk).
Borrowed a mate’s LiPo battery so I have a bit more juice for a #SOTA activation this weekend. Uncertain whether I will set my own pack on fire before I reach the campsite.
Synapse critical security updates v0.34.0.1 and v0.34.1.1 - please upgrade immediately. https://matrix.org/blog/2019/01/10/critical-security-update-synapse-0-34-0-1-synapse-0-34-1-1/
There's a properly random bunch of music being uploaded to the anything-goes PeerTube servers and it's pretty nice outside the filter bubble. French musos playing folk music with a 7 string cello (?!), https://peertube.social/videos/watch/79b93271-3422-455b-aa6c-8e226fb1acb3 or a tiny girl playing a balalaika https://peertube.social/videos/watch/eb1610d7-9ceb-40ba-8664-7f0fb691109c
Pulled out my old Directional Coupler project. It worked very well according to my spectrum analyzer. So going to build this design in to some thick well shielded project box. The old design just used solder boards I fused together. So far just got the holes drilled for the new project.
This will ultimately be the couplers I'll be using on the ROES meter to get me full PEP capable (1500 watts)
One of my favourite open source programs: false.c from GNU coreutils http://git.savannah.gnu.org/cgit/coreutils.git/tree/src/false.c
Australian computer nerd. Amateur radio operator, professional programmer & pentester.
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