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That's exactly it. The Dejero GoBox, used when we don't have time or space to roll out a full ENG truck to a scene. The box runs on battery power and contains six cellular modems. You plug HD-SDI video into the side, and it transmits it back to the studio. It's compressed, but if you've got full signal on at least four modems, the quality is pretty good.
I just always think it looks like the sort of briefcase bomb you'd see in a Die Hard / Bond film.
Im trying to figure out what this does exactly. Is it like a portable video processor and transmitter with a bunch of diversity (the 6+ antennas in the lid)?
I understood the Dejero box, but what is going on here?
I understood the Dejero box, but what is going on here?
That's the inside of an Antenna Tuning Unit (ATU). Basically, a giant capacitor / inductor circuit deigned to match the output impedance of a high-power AM / SW / MW transmitter (which is usually 50 ohms) to the input of the antenna or antenna array. From the size, I'd estimate that it's rated for 200-300 kilowatts.
It's a larger version of this:
You do not want to be in that room while it's energized. Ever chew on tinfoil? Magnify that sensation by a thousand. It won't kill you or reorganize your DNA, but it's weird as hell. You can actually taste the electromagnetic fields as you walk around through them.
That's the inside of an Antenna Tuning Unit (ATU). Basically, a giant capacitor / inductor circuit deigned to match the output impedance of a high-power AM / SW / MW transmitter (which is usually 50 ohms) to the input of the antenna or antenna array. From the size, I'd estimate that it's rated for 200-300 kilowatts.
Im glad you knew because I had no idea. I just knew it was something to do with a big AM station and that it looked neat.
Originally Posted by Joe Perez
You do not want to be in that room while it's energized. Ever chew on tinfoil? Magnify that sensation by a thousand. It won't kill you or reorganize your DNA, but it's weird as hell. You can actually taste the electromagnetic fields as you walk around through them.
That sounds pretty bizarre.
It also reminds me of something a navy radar tech told me when I was on the base down on Boca Chica key. They have a big radar dome there and according to him if you were in it while it was running it would "boil the liquid in your eyeballs." Ive never been sure if he was serious or not.
On that same base I went spearfishing in some partially constructed submarine "pits" that were dug out during the cold war. They never dredged out a connection to the ocean or built any kind of dock or anything, so theyre basically just big holes, but it was still pretty cool.
You do not want to be in that room while it's energized. Ever chew on tinfoil? Magnify that sensation by a thousand. It won't kill you or reorganize your DNA, but it's weird as hell. You can actually taste the electromagnetic fields as you walk around through them.
So what happens if you have something magnetic in your pocket / on your body? I would assume you would remove everything like this from your body.
Random 316 SS immersion coil we smoked today. A bunch of people have been boosting scrap from work, so i think i'm gonna ask the boss if i can take some of this home. Anyone want any stainless?
So what happens if you have something magnetic in your pocket / on your body? I would assume you would remove everything like this from your body.
Exactly. You don't bring metal objects or electronics with you into the ATU when it's operational. My eyeglass frames are titanium, so they get slightly warm and a little tingly, but I've never encountered anything like the "MRI magnet drags a heavy object across the room" phenomenon. This is RF, not magnetism. It heats stuff up, but doesn't present any danger otherwise.
Obviously, if you touch one of the conductors, you will cease to exist pretty rapidly. (Like, beyond closed-casket and into "we managed to vacuum up most of the ashes" territory.) So you try not to do that.
Originally Posted by Erat
Random 316 SS immersion coil we smoked today. A bunch of people have been boosting scrap from work, so i think i'm gonna ask the boss if i can take some of this home. Anyone want any stainless?
Holy ****. How the hell do you guys manage to destroy stuff like this? I mean, what does "smoked" indicate in this context?
To the best of my knowledge, this was the most powerful AM transmitter ever operated in the western hemisphere:
I got to tour the site about 15 years ago. It's impossible to describe the scale of the thing. For most of us, a transmitter is a box that sits on the floor. At that side, the transmitter was pretty much the entire building. Like, you'd walk into a room (with a safety interlock on the door), and you were inside the plate rectifier. It was like the photo Full_Tilt_Boogie posted, but a whole two story building.
Geoff Mendenhall and Jay Adrich were former co-workers of mine back in the Harris days, now retired.
It also reminds me of something a navy radar tech told me when I was on the base down on Boca Chica key. They have a big radar dome there and according to him if you were in it while it was running it would "boil the liquid in your eyeballs." Ive never been sure if he was serious or not.
I've never worked at a station that had its own radar system (these days, most TV stations buy their weather data from a supplier like WSI), but I can believe it. The really big pulse-doppler units ping at well over a megawatt, in a pretty tightly-focused beam. I've heard stories of birds being found at the base of the tower.
I would be afraid of radio waves scrambling my brain.
Originally Posted by Joe Perez
Holy ****. How the hell do you guys manage to destroy stuff like this? I mean, what does "smoked" indicate in this context?
I can't actually show you the picture of the crash that damaged that HX in picture because the picture has SpaceX parts in it.
But here is a similar crash that did roughly the same damage.
Some of these loads are 4000lbs, so they can really hurt some thing when they crash.
These are rocker pannels for GM. Ruptured a glycol line / coil.
Damage control followed. One job involved completely replacing the bottom block, shivs, and cradle from a hoist. About a 3 hour job, the boys do good work. This should solve some of the issues.
Yeah, I've heard about military radar dropping birds from the sky. The cavity magnetron that was used in radar systems was simply directed into a metal box to create the microwave oven. Don't walk in front of one.
Pineapple growing in my yard unrelated to microwave discussion.
“We had two elements,” she explains. “The interior, which we built on stage and that took about 40 tons of popcorn inside. Outside, waiting up in the wings, we had 100 tons of popcorn in 40 tractor trailers parked up the street. Then these huge vacuum machines would suck it out of the trucks, load it up into the house, and blow it out of the house. One take took 15 seconds. We had 15 good seconds on each shot of popcorn coming out and then you couldn’t go back, you had to keep going. Once you did the first take you could only progress because it took a whole day to clean up. To come back for take two of the same take you had to go away for a week then come back.”
“There was one outside and one inside. They were shot at two different times and two very different experiences,” Jarret says. “The first was the inside and the reason that’s important is because the first day we shot the popcorn, the popcorn was edible. After the first day of shooting, the place they had contracted to make the popcorn, it burnt down. [Laughs.] Apparently there were two things that they didn’t take into consideration. Number one: Popcorn is really flammable. Number two: The industrial machines that they used to pop the popcorn originally weren’t designed to go 24 hours a day and the oil got really, really hot and you just can’t run the machines that way. And they did and the factory actually burned down.”
Last edited by Chiburbian; Apr 21, 2018 at 11:33 PM.
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I mean, what does "smoked" indicate in this context?
