colsandurz | 1 year ago | on: Software-Defined Radio for Engineers (2018) [pdf]
colsandurz's comments
colsandurz | 4 years ago | on: Russians are trying to flee – data from Google Trends
What’s the difference between this and Google Flu trends?
colsandurz | 4 years ago | on: The 'Great Resignation' is really the 'Great Discontent'
I work at a place with a flat structure and I can’t emphasize enough how true this is.
It’s especially noticeable when you’re not one of the in-crowd.
colsandurz | 4 years ago | on: Texans can carry handguns without a license or training starting Sept. 1
What’s wrong with giving people options?
colsandurz | 4 years ago | on: Alabama Sheriff Legally Took $750k Meant to Feed Inmates, Bought Beach House (2018)
What do we have Sheriffs? What do they do that local and state law enforcement don't do?
colsandurz | 4 years ago | on: Challenges in the diagnosis of magnesium status
Not sure what he’s doing but this should help:
colsandurz | 5 years ago | on: Parler Users Breached Deep Inside U.S. Capitol Building, GPS Data Shows
Not really. To geolocate a user the cell providers would need to know the absolute position of all the LTE repeaters and cells (which they might). But they'd also need to compensate for indoor propagation (which is much more complex than outdoor).
Also AGPS only provides satellite ephemeris, which enables a faster time to fix, not better accuracy.
colsandurz | 5 years ago | on: Parler Users Breached Deep Inside U.S. Capitol Building, GPS Data Shows
A GPS repeater would only give accurate time, not position. The repeater only repeats the signal that's captured by the antenna on the roof. I use GPS repeaters frequently in my labs to supply timing to instruments.
colsandurz | 5 years ago | on: Meals based on vegetable protein sources (beans and peas) are more satiating (2016)
Can anyone link to some recipes that feature plant based protein? Here's a few my wife and I really like:
https://food52.com/recipes/30932-heidi-swanson-s-pan-fried-g...
https://www.rickbayless.com/recipe/cowboy-beans/
https://www.ranchogordo.com/blogs/recipes/spicy-baked-royal-...
colsandurz | 5 years ago | on: Show HN: Automated Health Dashboard
Does this work with Apple Health?? Is there an easy way to get data out of Apple Health?
colsandurz | 5 years ago | on: NSA Exposes Tool Used by Russian Hackers
So the NSA is doing what they actually should be doing?
colsandurz | 6 years ago | on: Launch HN: Probably Genetic (YC W19): At-home DNA testing for every gene
Would you ever be able to test two potential parents to see if they're both carriers for genetic diseases? Or, is that a completely different type of test?
colsandurz | 6 years ago | on: Expert Says Indians Will Soon Be Water Refugees Heading for Water-Rich Europe
And the square foot below me has 575x the density of Monaco and there are no problems here!
colsandurz | 6 years ago | on: Engineers create synthetic, sound-silencing structure that blocks 94% of sounds
94% loss is only 12.2 dB (10 * log10(1-0.94) == 12.2)... not that much.
Also, where's the STL if I want to try this myself??
colsandurz | 7 years ago | on: Reasons to turn down the transmit power of your Wi-Fi (2017)
Not only that but APs usually have more antennas, which makes a huge difference. The antennas can also be spaced out more (for better diversity) and be physically larger (typically you get more gain the closer your antenna length is to the wavelength of the signal).
You can also have better analog RF components with more space (filters, LNAs, PAs, etc).
It's not necessarily true that the "advantage" of the AP is symmetric as well. The tx power is limited by FCC part 15 so the difference in tx power between AP and client is probably less than the difference in Rx sensitivity between the AP and client.
Even if the uplink and dowlink are symmetric, the traffic profiles are probably not - there's probably a lot more data going to the client.
colsandurz | 7 years ago | on: Ask HN: Did you delete your Facebook account in 2018?
Me too. Haven't missed it either.
colsandurz | 8 years ago | on: European Parliament requests recommendation to end biannual clock change
So what's semiennial mean?
colsandurz | 8 years ago | on: Ask HN: Who's mentoring?
Software Defined Radio | Boston | Devin | dwwkelly at fastmail.fm
I program radios professionally and I've taught several short courses on SDR. If there's anyone in my area who's interested let me know.
colsandurz | 9 years ago | on: Amy Goodman Is Facing Prison for Reporting on the Dakota Access Pipeline
What can I do about this?
colsandurz | 9 years ago | on: I want a USB microphone for my Raspberry Pi, any recommendations?
Does anyone have any recommendations for a high sample rate microphone? Something that can do 120,000 samples per second or more? I don't need USB, really just the high sample rate.
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Alex was my advisor in grad school and I only know him to be honest, hard working and technically sound. I haven’t read this book closely but I’m not convinced that it’s poorly written based on cherry picking one paragraph from it.