fullsquare

joined 1 year ago
[–] fullsquare@awful.systems 2 points 5 hours ago* (last edited 5 hours ago) (1 children)

what kinda drug tests are we talking about here? i'm talking about the kind where you send piss sample and then get result, or in fact hundreds of results. you need to make sure all your paperwork is complete and lab is certified and so on because someone might say that results are legally invalid

the process is a bit more involved, samples need tracking and monitoring and storage and preparation, and if it's like you describe then guy's sketchy and won't survive audit

[–] fullsquare@awful.systems 1 points 7 hours ago* (last edited 6 hours ago) (3 children)

to run drug tests you need six figure range machine (when new), maybe 5 euro worth of plastic (spe column, eppendorfs, pipette tips), couple ml of acetonitrile and maybe 5-7 min of machine time on average. it can run 24/7 and if you find anything you can do more detailed analysis. bro's not earning shit, he's paying down the machines (and maintenance)

[–] fullsquare@awful.systems 98 points 1 day ago

god forbid a man has hobbies

[–] fullsquare@awful.systems 9 points 1 day ago (4 children)
[–] fullsquare@awful.systems 8 points 1 day ago

propaganda and advertising is one and the same https://en.wikipedia.org/wiki/Pravda_network

[–] fullsquare@awful.systems 3 points 1 day ago* (last edited 1 day ago)

it's a flow battery, so it keeps charge basically indefinitely (when not in use energy-bearing parts are separated). you can run it as hard as you need and it will not degrade in use-dependent way, at least not as hard as lead or lithium batteries

to elaborate on durability, there's no capacity loss with these batteries. so if design intention is to run these batteries from full to empty and back every day, and maybe a bit more* they can handle it no problem, because everything that happens, happens in liquid phase that can't degrade. lithium battery will degrade fast with such usage, but this one won't. on balance, there's need for pump and electrolyser maintenance, but at least you won't need to rip apart everything and replace all batteries every 3 years. per kwh per year of use it might be cheaper this way

* they might want this battery to provide energy in the morning, before solar panels kick in, soak up excess energy from noon peak, then discharge it in the evening. that might be 500ish cycles per year, and they can run it at full tilt

[–] fullsquare@awful.systems 2 points 1 day ago

it might be that one of your drug-metabolizing enzymes doesn't work properly, tell your doc, there are tests for that

[–] fullsquare@awful.systems 11 points 2 days ago* (last edited 2 days ago) (1 children)

was that written specifically for elon musk

[–] fullsquare@awful.systems 6 points 6 days ago

i like the 2y+ lead time

[–] fullsquare@awful.systems 4 points 6 days ago (1 children)

will pencil keep it wide open enough? the intention was to keep it slightly open, then put it in a bag and go around. years back when i had a laptop that shut down wifi with lid closed i solved that by taping a packet of instant ramen to palmrest for one evening

[–] fullsquare@awful.systems 1 points 6 days ago (1 children)

macos users have budget for these objects

[–] fullsquare@awful.systems 1 points 6 days ago (3 children)

depending on your build, putting an extra switch disconnecting lid switch could be a better idea because power management is hell on linux

 

I'm picking up an idea left by Dick KK4OBI, that you can lower impedance of dipole by arbitrary ratio if said dipole is zigzagged or otherwise uniformly contorted in some meandering shape. Side effect is that dipole becomes shorter and needs more wire. While there's data about impedance for fundamental, there's nothing about harmonics which is something that OCFD might be expected to handle well, so guessing that the really important part is aspect ratio of meander, i've made a couple of VHF-scale models with different meander aspect ratios (and many more much smaller sections), and some of data i've been able to collect roughly matches. The thing I'm trying to figure is what aspect ratio should be to cover multiple bands while using OCFD, say 40-20-15m bands, and whether impedances at different frequencies fall at the same rate. Eventually, when i figure this out, i'll try to make a full size 40m fundamental antenna, as I think that i've figured it out in mechanical terms

However during testing it turned out that I have severe common mode current problems, as two 10mm dia split ferrite beads were evidently not enough, so what little i've been able to collect is mostly useless. When I packed up everything I've found 4 Laird 28B beads that should together give 1100 ohms of impedance or so at 100MHz which also happens to be close to lowest frequency in my setup. Is this enough? Feedline is currently about as long as shorter arm of straight dipole at 22,5:77,5 split ratio, should I change it?

 

some communities are stuck in past, some 1d, some 1 month+. maybe it's because of old lemmy version (0.19.3 was released 22.01.2024). release notes for 0.19.4-0.19.10 don't suggest that these are breaking updates. 0.19.4 and 0.19.6 are big ones. 0.19.4 requires postgresql 16 and pictrs 0.5+ and it passed security audit. 0.19.6 recalculates something meaning that update takes longer. most of instances still on this version are down or badly broken, and these few that still are up seem to have the same problem

i guess it promotes touching grass, if that's your intention, fine,

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