roamingryan

9 ms·

1.
by roamingryan 8mo ago
I have never understood how this was effective against a determined adversary. An arbitrary limit like 100ml is pointless when there is no limit to the number of times you can pass through the checkpoint.
2.
by roamingryan 3y ago
I was left wondering the same. My best guess would be that slope detection could be converting the FM signal into AM. This happens in circuits where the response is strongly dependent on frequency (see [1]). A specifically designed filter
3.
by roamingryan 3y ago
I've been down to McMurdo for a research trip. A couple of things that outsiders find surprising is that most of the people there are support staff and only a small fraction (maybe 20% or so) are the scientists. The support staff are b
4.
by roamingryan 5y ago
I second this. I picked up one second hand a while back. The placard indicates it was built in 1997. It needed a good cleaning and had clearly seen a lot of use, but is perfectly functional. The shower arm was showing slight signs of rust a
5.
by roamingryan 5y ago
Seems to work OK for me. I will point out that it is very "coarse" and only has 4 possible settings. Perhaps not the best choice for a slider, but perhaps they made that UI choice just to match the other sliders?
6.
by roamingryan 5y ago
Very nice project. Much better than dealing with the raw tables/curves from Fair-Rite which seem to have been photocopied again and again over the ages.
7.
by roamingryan 5y ago
Really nice of them to release this. However, unless I'm missing something, the HDL for the FPGA on the Time Card is not part of the release. It looks like it uses a proprietary IP core from NetTimeLogic https://github.com
8.
by roamingryan 5y ago
I built out a simple "technology access" solution for my late grandma about five years ago. It was just some simple scripts running on a raspberry pi. The scripts would fetch emails from a gmail account, extract the attachments,
9.
by roamingryan 5y ago
Many modern FPGAs now include dedicated logic for config SRAM "scrubbing." This logic continuously checks config frame checksums to identify upsets. These can then be fixed in real-time either using the error correction properti
10.
by roamingryan 6y ago
If I had to list one thing it would be this: People everywhere, regardless of their race, religion, politics, or wealth are generally decent and primarily interested in making a better living for themselves and their family. Some may see th
11.
by roamingryan 6y ago
I left my job when I was in my late 20's to make a year-long round-the-world trip. Leading up to it, I was up for a promotion at work and my managers and colleagues were very skeptical about my decision to leave at such a time. I&#x27
12.
by roamingryan 6y ago
Most of the major component distributors: https://www.findchips.com/search/Adalm-pluto
13.
by roamingryan 6y ago
Plane or inclination changes are expensive. Phase changes are cheap, relatively speaking.
14.
by roamingryan 6y ago
Not necessarily. Watermarking an audio stream like this wouldn't require that high of a bit rate. It could easily be hidden "under" the content using coding techniques like direct-sequence spread spectrum. A real world exampl
15.
by roamingryan 6y ago
Interesting because HughesNet as it exists today is serviced with GEO satellites. These can't hit the latency requirements of the RDOF program Only the OneWeb sats at LEO can deliver on the latency requirements. It will be interesting
16.
by roamingryan 6y ago
Does anyone know why Hughes, a OneWeb investor, placed and won bids solely within the state of Rhode Island? Is this some sort of squatting play to qualify them for future solicitations? Given the state of OneWeb, it seems very unlikely the
17.
by roamingryan 6y ago
Yes. Guided munitions. Some artillery shells incorporate guidance electronics that survive these sort of conditions.
18.
by roamingryan 6y ago
It is also worth noting that propagation velocity in glass fiber is about 60% slower than free space. Once the constellation is dense enough and OISLs are working, they'll be able to undercut fiber latency. That is, if they actually de
19.
by roamingryan 6y ago
I'd be surprised if that is the outcome. MIT facilities tends to be quite tolerant of stuff like this.
20.
by roamingryan 6y ago
That is correct. US Citizenship is not a requirement, however, I believe you do need to have a US mailing address.
21.
by roamingryan 6y ago
The MIT Radio Society (W1MX) has gotten their online process up and running and is regularly scheduling sessions. http://w1mx.mit.edu/ham-exams/
22.
by roamingryan 6y ago
PCLATH stands for Program Counter LATch High (byte). In this case latch refers to the digital design technique where you have a register that holds bit(s) until some other event happens. The event in this case is a write to PCL. Once the ev
23.
by roamingryan 7y ago
Not quite what you are describing, but Universal Radio Hacker is a useful tool for reverse engineering protocols. https://github.com/jopohl/urh
24.
by roamingryan 9y ago
Similar story here. I didn't completely tank my GPA due to solar racing (Rose-Hulman, ASC2001) but it certainly didn't do it any favors. None of that mattered though as the practical engineering skills I gained far outshined any
25.
by roamingryan 11y ago
Thanks for this alternative. One suggested edit: Savor should be Sabre
26.
by roamingryan 11y ago
That's not really the point. The course is designed to pair you up with the equipment/resources and have you actually make stuff. The learning comes from applying the knowledge, not just acquiring it.
27.
by roamingryan 11y ago
Much of the remaining latency is likely coming from FEC and interleaving needed for the RF links. http://en.wikipedia.org/wiki/Forward_error_correction#Interl...
28.
by roamingryan 11y ago
FEC and interleaving induced latency will likely become the dominant term for LEOs.
29.
by roamingryan 11y ago
You should check out mosh for use on high latency connections: https://mosh.mit.edu/
30.
by roamingryan 11y ago
LaTeX got a good workout compiling that tome!

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