exactly, the ferrite only affects common mode current. you can think of coax as being composed of 3 conductors, core, interior of shield and exterior of shield. above some frequency and below frequency where coax starts to work like a waveguide, internal surface and core carry opposite currents (differential mode), and external surface carries common mode current. these can be treated as separate, except at the ends, because of skin effect. but also you can use twisted pair, because differential mode currents cancel out there

that's just a piece of wire, perhaps some thin steel rope in a heatshrink attached to center conductor and trimmed to length. 1/4 wave at 2m which is fine, 3/4 wave at 70cm which means it'll radiate most of energy upwards (wasted) when put on a conductive plane. this works because the other half of antenna is low power, handheld radio and operator (coupled by hand capacitively). putting 100W into it would be a bad idea because all that current will travel along the coax down to radio and operator except this time there's an option of rf burns. for this kind of money, i've made two jpoles with extension cables, and the most expensive part was enclosure

i'll make a post over the weekend about j-pole antennas that i've made recently. one of them even looks halfway professional

move fast and break yourself!

Believe it or not, there are bacteria that live on surface of fuels and oxidize them for energy. Sometimes there are antibacterial additives, sometimes they are filtered off, but sometimes these just fall down to the bottom of storage barrel at gas station. This, mixed with rust and a little of water, forms that sludge. They see that because gas station runs out of fuel

This is why i always place all important info in Supplementary Information which is almost always free of charge. except on sciencedirect. fuck them

they need something like two trillions for entire business to make sense, doesn't mean that they'll get it. zitron says the entire sector is worth something in tens of billions in revenue (not profit) per year

that could be any of who knows how many untested things he tried over years

"don't die" - famous last words

e: this is also sorta why clinical trials are a thing, and why so often there's recommendation to not treat disease at all, and why you leave that call to a professional, not decide on your own. especially when your own education is MBA from BYU

update 2: bluesky people say he also ate rapamycin then stopped; also dried cow thyroid; got some unapproved "anti-aging gene therapy" in honduras; probably among many other unusual things. he won't be even useful as a case study because deconvoluting all this nonsense would be impossible. maybe as an example

man they really do like reinventing alchemy, did anyone suggested cinnabar yet? i guess him blaming sugar for it might be beginning of new grift

photovoltaic panels are just giant diodes you can run them in reverse and every panel gets that 0.6V voltage drop like any other silicon junction

sadly it's unlikely, he's a chechen celebrity so he won't get anywhere close to the frontlines (unless middle strike campaign gets expanded)

You have to keep in mind to not exceed coax bending radius. Solid insulator (as in not foam) coax works better. Somebody has measured them http://www.karinya.net/g3txq/chokes/

I've seen people using twisted pair of enameled wire (50 ohm) instead, or a pair of insulated twisted wires connected in parallel (each is 100 ohm impedance) this allows for much tighter turns. This works only for HF, for VHF and up there are alternatives and multiple turns don't make sense, it's better to use ferrite beads