IP over AC: Mmmmmm Ppppfffftttt SssshhhhhhhWOOOSH 

Thanks for the demo!

Nah, did this 14 years ago, works fine.

Already on 4) Profit.

Why not powerline Ethernet, aka internet over power outlet? Do you have any insight over how lossy those signals get?

Should probably mention plenum rated cable is what you're supposed to use inside air ducts.

Same 😅

Considered this…

Or about using the AC duct as an RF waveguide

Missed opportunity

RFC 1149

Dont they already do this in some cases? just not with pigeons, but airplanes. Faster to pack up all hard drives and air ship them than move the data over the internet

Nice one!

Thats intentional referense to and older april Fools joke.

"This image is an example of packet loss."

HTTP-D involves Donkeys carrying your packets.

Is that the harder drives guy? I love that channel

@@AlphaPhoenixChannel That is the harder drives guy! A very entertaining channel indeed.

Its the first of april after all, which is usually around when he uploads, so that's nice.

If only we could tag @suckerpinch

the absolute GOAT of harebrained yet devilishly clever computational shenanigans

I just learned about plenum cable.👍

Yeah, I was curious if he was going to use a plenum (CMP) rated cable, but it looked like it was just an off the shelf (admittedly long) Ethernet patch cable that likely is only rated as a riser cable (CMR), if it is rated at all. To anyone not aware, CMP cables are for areas with forced airflow, like air ducts or the areas above a drop ceiling on commercial spaces. CMR cables are for areas without forced air flow, like inside 2x4 framed walls. CMR cables are cheaper, but CMP cables do not combust and will not cause fires themselves. In an environment like an air duct with lots of air, and this lots of oxygen, using CMP cables is much better (and is actually required by most building codes).

PHYSICS

didn't someone sensible do a video on making educated assumptions about variables? maybe I'm getting confused with a post on a blog somewhere... wait, it might be a chapter or just a paragraph from Randall Munroe's 'What if?'

@@EggBastion What if? uses Fermi Estimation frequently.

@@AlphaPhoenixChannel Just turned in a Thermo midterm with a bunch of scratch about order of magnitude estimates to generate some graph shapes for S over U..... I have no shame.

@@EggBastion Kyle did a video on Fermi Estimation when he went over to his own channel after Because Science.

Whooooo napkin math!

Plenum cable isn't lower fire risk. It just makes less toxic smoke if it's in a fire. If you have a fire in the ac ducting of your average house there's going to be way way more toxic stuff going on than one cable to worry about. The actual use case for that stuff is where smoke from a fire in a shared air space (plenum) will be able to get to occupied parts of a building before people are able to evacuate. Like yes you could use plenum cable, but the actual gain in any sort of safety in this specific case is infinitesimal.

@@nasonguy so it will be harder to fish out through the ducting?

@@nasonguy how does it bunch when it's being dragged through?

@@nasonguy and if you have a pre terminated cable for the one single run your doing in your house?

@@nasonguy your right, slavish adherence to the rules does when when an individual risk assessment says it doesn't matter

That's really only appicable to office buildings, where the whole area above the dropped ceiling is the air return plenum, and there's TONS of ethernet cables up there. In a house, it really doesn't make much difference. Your furnace isn't running all the time like the HVAC is in a commercial building, and secondly, if the house is on fire, outside is very close (as opposed to possibly many flights of stairs down in an office building), there's very few peple in a house, and there's already tons of other plastic burning (because almost everything in a house is plastic), so what difference is one ethernet cable going to make.

@@klikkolee I bet your fun at parties too - do you literally follow the instructions on the side of the shampoo bottle exactly too? Wet hair, apply soap. lather, rinse, repeat? Do whatever you want, but I maintain that one or 2 ethernet cables in a duct in a house will make absolutely zero meaningful difference if your house is on fire anyway. Enjoy paying 2x the cost for your cables!

@@gorak9000 What else would you do with shampoo???!!??!?!?

@@Nelo390 It's actually great on toast.

​@@klikkolee Question. In what scenario have you ever heard of an Ethernet cable catching on fire? Because the only scenario I can think of is if you're running POE through the cable, or there is already a fire elsewhere that is raging enough to catch the cable in the ductwork. Other than that, it is just a simple data cable running at low current and voltage, just enough to send a signal, and is considered a low fire risk even if broken. This regulation makes sense should a cable be delivering power to a device or appliance within the ductwork, because you never know if a rodent would get in there and chew it, or it may flap about when air is flowing on a corner and cause a small break. This can lead to an arc fault, and the extra air flow could stoke the burning plastic where the arcing is occurring. But the power potential in a data only cable is so small, an arc would be unlikely and the fire risk is low. If the concern is temperature. Well, Ethernet cables are rated for a temperature of 167°F or 60°C. So, unless the run is started literally right next to the furnace, I think the cable will be fine. Even then, the outlet of a furnace is typically 140°F-170°F for older furnaces. But it is more likely most furnaces nowadays would be higher efficiency units that operate at 110°F-140°F right at the outlet. Finally, if the concern is if the cable catches fire because of an already existing fire. Plenum rated Ethernet cables are specifically coated in polyvinyl chloride or PVC, because it's considered low smoke and low in halogens. However, you'll be hard to find an Ethernet cable that isn't coated in PVC anyway, even if it is not gone through the expense to be certified as plenum rated. So, using plenum rated cable is a bit of an overreaction to this. However, I would say that if you're planning to run PoE cable, then yes. Running your Ethernet setup through ductwork would be ill-advised.

They do have ethernet over powerline (AC) adapters - you can buy them off the shelf in the store. I think they even go to gigabit now. Nothing beats real ethernet though...

@@gorak9000 cool, the more you know

@@gorak9000 Yeah, I'm a bit surprised that wasn't everyone's assumption given the ubiquity of such devices. I actually clicked because I thought it sounded too mundane he was just using a powerline and there must be something special going on. I was not disappointed!

@@gorak9000 Yeah, I thought the title meant that.

Insulation makes it much harder to fish. It's also two floors, so he'd have had to find an existing chase or open up the wall to make holes through the bottom plate and any fire blocking.

A good sparky can do this with yellow tongue.

Making holes in the wall is a life skill. fixing holes in the wall is an even more important life skill

And in this scenario are we using 30 foot long drillbits? or whats the plan there?

@@variouselite you would just follow the air gap between the studs, buuut he did say external wall so there would be insulation. you could fish the cable down between the paper and drywall but ideally you would use a non insulated internal wall. then where you want the cable cut a hole for a outlet box and grab the cable and use a ethernet plate.

I thought the grocery bag was a common trick. I've seen it used seriously to pull a string through conduit using a vacuum cleaner.

Same. Using the ducts as an antenna would've been much more interesting and much more difficult

@@custos3249 not really as an antenna, but as a wave duct.

Aren't exit doors on buildings supposed to open outwards? That way it's easier to exit during emergency, just by pushing on the door.

​@@areadenial2343 If they were, then all the fans had to be blowing the air out for this to happen. And pushing with even 100kg force (half the total estimated above, if you push at the very edge of the door) would be pretty hard.

Actually, I just remembered, I experienced something just like that in the past. The dorm building I lived in while at Uni is pretty tall, and its shape makes it a very good wind trap. Combined with old windows that are far from sealed, that creates quite some drafts even when the windows are closed. And on one especially windy day, I had to put my leg on the wall and push pretty damn hard against it to pull the door open and leave the room, and I was kinda afraid the door handle might detach in the process. And once the door opened like 2cm wide, enough air just left the room and I almost fell on my back. As a bonus, glass shattered due to wind smashing windows/doors closed/open was lowkey-common there. And I've seen at least one doorframe noticably damaged by wind repeatedly slamming the door really hard. And one time, when the wind was blowing into my room from the corridor, the door force-opened on me when I pushed the handle down, and I heard glass shatter somewhere on the other end of the corridor a few moments later, couldn't help but think that "I did that".

In minneapolis the old metrodome had an inflatable roof that was held up by air pressure. If you left before a game was over, the revolving doors were locked and it was a bear to pull the exit doors open. You were then ejected out with an audible swoosh of fast moving air. Loads of fun for youngsters but a real danger for elderly fans

Or, if you want to find out how many HAM operators live nearby, you run ALL of the IP over powerline you can!

Is this still really a thing? I remember reading about it over 20 years ago before wifi really existed and the transfer speeds were awful.

Yes it is still a thing, just less common I'm sure. Plenty of cases where it's better than wifi though.

@Muonium1 They make gigabit over powerline. It works well.

how exactly does it affect HAM operators?

This type of modem has been around for years. No need to reinvent the wheel

@@steffenvongrabau7260 Maybe by "invent" he meant "drive to the store and buy one", the same way most people say "cook" when they mean "warmed something up in the microwave for 3 minutes"

I know, but don't tell him. 😃 Don't you wanna see him reinvent it? You've seen them on the market, but you haven't seen a guy go through the necessary mistakes of trying to design one himself.

@@MuradBeybalaev That would be quite the project indeed. It's not nearly as straightforward as you'd expect. It could be a 30 part video series starting with DSP and RF basics, and if you watch all 30 parts, and take the test at the end, you could get an honorary EE degree from RU-vid University. Having actually graduated with a bunch of EE's, I don't think 99% of them could design a powerline modem and actually end up with something that works in the end. I'm pretty sure he's an MECE or CHEME or something - it would probably be a nearly impossible task for him to do!

@@gorak9000 🙉Sign me up!

*dr forgive me

I want to do this now but I feel like it would just end up using ultrasonic

That would have much worse performance characteristics.

@@DanKaschel i use them, they are 600Mbps, definitely good enough to stream

@@Extra_Mental your two endpoints need to be on the same circuit. Highly unlikely in this case.

I'm genuinely baffled as to why he didn't run this through the walls and use wall plates. I've done it a few times, although not for years. I remember it being surprisingly easy and looks infinitely better.

@@grenin1010 He briefly mentions the wall behind the TV is an exterior wall - which should be packed with insulation and ideally left intact regardless of difficulty. I'd be surprised if there isn't an interior wall elsewhere that runs through both stories, but that should also be fireblocked at the floor level anyway. It's pretty difficult to safely/legally remodel a pathway through separate stories in modern buildings with the average DIY tools.

How are you getting that through 2 stories of noggins?