Ok, for like the sixteenth time this week I’ll explain this – I’m getting tired of this shit. I’m putting this up here so I can just send the link to people fighting over it instead of repeating myself a zillion times.
Note: If you were sent this link, you have probably been a victim of fake news!!!
First off, before you even read what I’m going to say, please take a moment to educate yourself on how to spot fake news. Many of the convincing looking articles out there that are trying to convince people that there are health risks linked with 5G wireless technology, or worse yet, that it is somehow “powering” the COVID-19 viral pandemic, are literally just fake news being propagated via a variety of sources including Russian propaganda bots. (Why, I wonder? I… frankly don’t care.)
I also highly recommend checking the Ad Fontes Media Bias Chart which ranks media sources on both their reliability for factual reporting and their level/direction of bias. If the source doesn’t even appear on the chart OR appears way down at one end or the other of the bell curve, look elsewhere.
5G wireless is not harmful. It is not harmful to people living, working, or playing near towers, using mobile phone handsets, or even to properly trained tower workers and technicians maintaining the base station equipment. (In fact, the physical supporting tower itself is the only significant risk, mostly from fall hazards.)
It is not using hazardous ionizing radiation which can cause cancer or other health problems. It is not using high RF power levels that can cause injury from heating or thermal burns to tissue. It is not generating strong magnetic fields. NOTHING.
IT IS CERTAINLY NOT CONTRIBUTING TO OR RELATED IN ANY WAY TO THE COVID-19 PANDEMIC, YOU MORONS. If it was still supported in modern browers I’d pepper in the fucking <blink> tag to make sure you see this.
5G wireless is in most cases using the same radio frequency bands and low transmitter power levels that 4G, 3G, EV-DO, LTE, whatever currently in use, are using. The only odd exception is that T-Mobile’s implementation, in some areas, is going to also have some millimeter wave channels in use for base to mobile transmissions. Users will not be exposed to high RF field strengths unless they physically climb the tower and give the antenna a big hug. So, uh, don’t do that.
The handsets you’ll have will continue to transmit at 600 to 800 Mhz as always, at very low power levels as they do now. Consider the fact that a mobile phone handset has to run off a battery of limited size and actually, you know, run on that for a long period of time. In all cases I’ve seen, the mobile phone’s CPU and screen consume 2-10 times as much power as the radios.
I’ve seen the TMobile millimeter wave system compared to the military’s active denial system, but that’s a really shitty comparison as the ADS uses kilowatts of power focused by a huge truck mounted dish for truly crazy effective radiated power levels. Specifications on the device are hard to come by but a smaller version was specified in a WIRED article as sending 30,000 watts. From speaking with a TMobile technician about it, he told me that the transmitter power (I don’t recall if it was effective radiated power or transmitter power output) will be approximately 50 watts, HOWEVER, the path loss is HUGE at those frequencies, so once you’re just a few feet away from the antenna sectors, you’re back down within safe RF exposure limits. They pretty much expect to only use the millimeter wave stuff within a few outdoor urban areas where there’s a high density of subscribers who will use it. It will not pass through trees, walls, or windows at any usable level.
It’s all entirely harmless to everyone except for the deluded consumer who thinks it’ll actually give them more bandwidth. Nobody’s actually investing in improving the bandwidth and reliability of the fiberoptic networks behind all this shit, so it will continue to be garbage. It’ll just be garbage in a fancier can.
Please, do not listen to Russian propaganda bots and clickbait websites. Do not listen to Alex Jones / Infowars. Don’t go chasing chemtrails, please stick to the rivers and the lakes that you used to.
I hate Just In Time manufacturing. It screws everyone over for weeks with a ten ton lead dildo whenever any sort of supply disruption occurs.
So right now, go to the store and you’ll see this.
Not shown, the news helicopter overhead, the fights breaking out, and the checkout lines around the store.
So what’s the supply disruption here? There…. isn’t one. See, Just In Time always expects that demand is predictable or completely inelastic, so when you have any sudden unexpected demand…
Finished product isn’t waiting in warehouses.
Subparts of products aren’t available (supposedly, production of toilet paper and paper towels have halted due to lack of the cardboard roll core tubes, but that’s an unconfirmed rumor!)
And who the hell knows why everyone snapped up the instant ramen. Uhh.
The supply chain breakdown hit hard and ugly in the electronics industry first as that depends almost entirely on parts from China. (Sadly)
Now it’s hitting domestic products and people are getting slammed into empty shelves over the last box of baby wipes.
Could you really say nobody saw this coming?
Stores are starting to put rationing measures into place, but those are far from fair as they’ll let some dude who lives alone buy the same amount of cleaning supplies and paper towels as a mother of four who comes in for the week’s groceries.
Another day, another case of being thoroughly perplexed by RF Central gear—
When the mast goes up but the signal doesn’t go out, it’s time to investigate.
The forward/reflect/12vdc return meter always seemed to show 00.0 if the PA was off… -1 if the PA was on, in any field.
TWO different bad amplifier units…. one was waiting on the shelf as a spare, one just came off the truck.
So what’s inside? I forgot to take a photo but if you remove the hex screws on the back it reveals a Stealth Microwave SM2025-44L, 25 watt linear amplifier for 2000-2500 megacycle DVB applications. Sadly. Stealth Microwave is long gone.
Interestingly the amp bricks are specified as having an internal output isolator. Nifty.
The other major part inside the amp brick is a bias tee that splits 12vdc power sent up the coax out to run the fan and the amplifier.
And now, it gets… horrifying.
I found a datasheet on the SM2025-44L and it’s specified as taking a mighty 8.5 amperes. I mean, at least it isn’t gonna arc furnace anything, but the voltage drop CANNOT be nontrivial anymore.
This has to get to it on the coax. The coax from the indoor unit in the truck to the outdoor amplifier unit is not a short sweet little run. See the big black coil up the mast in the first pic? There’s probably at least 45 feet of coax in there, plus another dozen at least to land it from the feedthrough in the roof to the IDU in the rack.
WHY DID THIS EVER WORK AT ALL? Or does it? I don’t….. I can’t even——- No——— I need to go home and collapse in bed and place the kitteh on top of me and stop trying to think for this week. DONE. I’m so done. What the hell.
Holy heck. I think I’m looking at a piece of terrible broadcasting history here— the Tektronix RFA400A.
It ran Windows NT Embedded.
It has a dual Pentium Pro Slot 1 400 Mhz backplane PC inside, which does not boot, and chances of finding a replacement are probably zero. I’d guess probably about 31 of these boards were ever made and the other 30 have already been thrown in a Homer Paint Bucket full of acid by some gold scrapper in their backyard.
I’m estimating chances of being able to repair this thing at approximately HELL NO percent. Thankfully we have far better, newer test equipment in place already. YEET!
Shown here is a Dexter Thoroughbred 600 washing machine I pissed off. And how did I piss it off, you may ask? I left a penny in my pocket.
The newer Dexter machines appear to not have this same issue, but these older ones (looks like it’s from the 90s?) do.
A lip behind the door edge is just the right size that a penny can fall into the space between it and the rotating basket, and get wedged in the rubber gasket, causing the machine to urinate.
A quarter just kinda sits there.
The offending lip (tub edge?) and basket edge. The rounded edge is what the door gasket seals against. The rubber ring seen at the bottom is just where the front cover of the machine meets the tub and is there to fill a gap and prevent the whole thing shaking and banging.
And the penny doesn’t exactly come out unscathed from the ordeal.
Stuff like this is a good example of why, when you test a design, you must consider some unusual use cases. This could have been prevented if someone had just noticed that the spacing of this assembly easily allowed small flat objects to get sucked in and jammed there.
And maybe Grass Valley Group could come up with a newsroom video archival and playout system that doesn’t toss its cookies every time the moon is in a certain phase, but that’s clearly asking too much. *Growls in frustrated engineer*
I kinda chuckled today at the nonsense with the browser tab open to a cheap looking vinyl lingerie set appearing on Faux News today, both because the commentator never considered his whole screen would be shared on air, and because… that’s just boring, man.
I’m pretty sure they can make it in other colors as well — Misfitz seems to make some off the rack stuff but also offers a ton of custom options. I’d probably want it in purple or red.
I have a different dress from them and I totally love it. The PVC fabric feels really nice and heavy without being inflexible, and it smells like 1855A coax, which amuses me far too much. The belt isn’t part of it, though it’d be freaking amazing if they had a rainbow glitter fabric like that for trim. It’d also be nice if it had epaulettes for a radio speaker/mic, but who else ever uses that?
Yeah, I’m all classy like that, and I’m making a mental note to leave tricolor foaming wax visible on the studio computers that can feed the router. Sacramento, y’all need more TCFW in your lives.