madengr

16 ms·

31.
by madengr 4y ago
Per the article, it’s just more kids taking it. My kids HS has national testing day during the school week, when I assume everyone takes it.
32.
by madengr 4y ago
Though not all radar uses pulses. Some are CW, as were the earliest experiments for detection (no ranging).
33.
by madengr 4y ago
What kind of jobs do you run on them?
34.
by madengr 4y ago
Glass PC cases; so much for EMI compliance. The old computers had metalized plastic cases for a reason.
35.
by madengr 4y ago
We had that same rotary network in school (1986). It was neat that you would download to multiple machines at once, then upload from individuals. Of course we'd play Telengard and Battlezone when not programming, or using the hex edi
36.
by madengr 4y ago
If you look at a map, the entire area is broken into numbered areas, with 51 being the most famous.
37.
by madengr 4y ago
The water analogy fails in the saturation region of the transistor, as no more water flows through the pipe despite increasing pressure.
38.
by madengr 4y ago
Globalstar simplex only takes about 200 mW over 2 seconds to deliver a 72 byte message, into an antenna about 0 dBi gain. See the STX3 transmitter module.
39.
by madengr 4y ago
I had on original “Big Red” from my grandfather, which unfortunately someone walked-off with. That book saved my butt in school several times, especially with the Laplace transform tables.
40.
by madengr 4y ago
Reminds me of the Tom Baker Dr. Who episode where the Jaggaroth commander is split through time, existing in multiple centuries. He has daVinci paint multiple copies of the Mona Lisa which stay hidden away for centuries. He then steals t
41.
by madengr 4y ago
Line of sight (1/r^2) often has lower attenuation than urban propagation (1/r^3 to 1/r^4), so it’s often easier to hit a LEO satellite than a terrestrial tower.
42.
by madengr 4y ago
I use BNC connectors almost daily, and that have been around for almost 80 years.
43.
by madengr 4y ago
I’d stay away from any of the PC based stuff. Get a scope with physical knobs and screen.
44.
by madengr 4y ago
We had the “test of knowledge”, which if you didn’t pass (multiple attempts), you didn’t pass the course. It was 60 questions in 180 seconds. No hard calculations, just stuff you were an embarrassment to the prof if you passed EM and didn’t
45.
by madengr 4y ago
None here. I bought a 2015 Leaf in 2017 with 19k miles for $8,500. At 75k mile now with zero issues. Just plug it in at night and drive it around town. It's a glorified golf cart, but it works great.
46.
by madengr 4y ago
Why has crypto crashed when it was supposed to be inflation proof?
47.
by madengr 4y ago
Doesn't the normal Starlink have an Az-El motor for rough positioning? Beam steering only gets you so far, and the more off-boresight you get, the worse the performance.
48.
by madengr 4y ago
Yep, the domain knowledge is too narrow to develop free or open source tools like that. Someone with that knowledge needs to work full time to gain it, thus needs to make a living at it. The few open source tools come from universities we
49.
by madengr 4y ago
I'd argue it's not even a wheel, as those are round. If a snake could slither vertically, it could climb a hill with a wave motion too.
50.
by madengr 4y ago
Yeah, I did some EM simulations of that years ago when I read about it. Shame it never took off. The balloon tether is really cool. http://www.corridor.biz/
51.
by madengr 4y ago
Yeah, POE is great. I have a 48 port Ubiquiti switch with POE AP and cameras. I ran duplex fiber and 2 pair of shielded CAT 5 to each room. For the downstairs rooms, those are through short runs of conduit to the basement, so I can poke
52.
by madengr 4y ago
I wired my house with 62/125 fiber 22 years ago as a 1 km spool was only $250. I’m too lazy to look it up, but I suspect multimode fiber is cheaper than copper, and termination kits are cheap now. I’m running 10G on single mode 100 ft
53.
by madengr 4y ago
The parasitics all depend on the model, as I used LTSpice recently for an RFIC class for a 5 GHz LNA. The .net directive allows two-port analysis and even a Smith chart. Though Microwave Office is my go-to tool.
54.
by madengr 4y ago
If process engineers are so rare, why don’t they pay them like they are rare? My wife got the hell out and into data science. Much more respect and pay.
55.
by madengr 4y ago
What is the other ship in that photo?
56.
by madengr 4y ago
Which is exactly what concerns me as people start throwing high level languages with loads of questionable libraries into critical microcontroller circuits. I’ve recently dealt with power-on reset, oscillator start up, and UART timing issue
57.
by madengr 4y ago
As an RF/Microwave engineer, I think the elephant in the room are the control electronics. Presently these are racks of equipment for a few logical qubits. Isn’t there a spareness limit to the qubit arrays to maintain entanglement? H
58.
by madengr 4y ago
Ha ha, when I was a kid with my C64, I used my moms old reel-to-reel tape deck to store data. I still have a C64 and tape drive. There was a magazine in the 80’s where you could scan in the code with a bar code scanner.
59.
by madengr 4y ago
I have 83% capacity on my Leaf at 7 years and 75k miles. I live in Kansas City where it typically ranges from 0F to 100F over the year.
60.
by madengr 4y ago
The kid down the road from me in rural VA had no indoor plumbing, but had a VIC 20. I eventually got a C64, but that was after my dad brought home a IBM PC for a few months to do chemical calculations in a spreadsheet. He said it was revol

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