kawfey

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241.
by kawfey 7y ago
I have a few. 1) PiHole. I'm upgrading this to a RasPi4 and seeing if I can also merge 2) 5) and 6) into it. 2) NAS/VPN/Media Server/Hass.io 3) RTL-SDR for ADS-B Receiver feeding to numerous data warehouses (Flightaware,
242.
by kawfey 7y ago
The FCC license registration [0] contains some interesting information. - Experimental radio service call sign WM9XPA - Using an Icom IC-821C Transceiver [1], a twenty-something year old VHF/UHF ham radio...wow for a $7M project couldn
243.
by kawfey 7y ago
CB Channel 6 is still an ongoing cultural phenomemon. Now that it's the summer, it's back alive with 10kW transmitters all over the place. Today not a single channel was empty, and there was a lot of lower sideband, and freeband o
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by kawfey 7y ago
GPS jammers are frequently used by drivers of GPS-tracked assets to help fudge their numbers. Such devices are very readily available online. However, their goose is cooked the moment they drive past an airport or military base. The airport
245.
by kawfey 7y ago
Here's a live map of amateur radio traffic. https://aprs.fi . And of air traffic: https://global.adsbexchange.com/VirtualRadar/desktop.html And of high-altitude balloons. https://tracker.habh
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by kawfey 7y ago
"Professional" radio is likely after the first 24-48 hours of a large scale disaster, but for large hurricanes and earthquakes, radio amateurs are almost always the first dedicated communicators on site before local police and EMS
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by kawfey 7y ago
Likewise...with HN you never know what esoteric guide or advice lies beneath a somewhat vague headline, and in almost every case it's unexpectedly convenient or interesting.
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by kawfey 7y ago
They've done this before. Charles Simonyi [0] went up to the ISS in 2007 and 2009. I got to talk to him via ham radio. Space Adventures [1] has been doing it since 2001, but it seem they haven't had any recent trips. [0] https:&#
249.
by kawfey 7y ago
+1 for ham radio, HF is much better in rural areas since it's farther from manmade electrical noise, however VHF+ is boring due to lack of people (and typically line of sight range) unless you're into satellites, sporadic-E, and t
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by kawfey 7y ago
*reflect Deflect means to shield an area from sun; this project is to bring sunlight into a perpetually shaded area.
251.
by kawfey 7y ago
Yes. My friend has the same Xiaomi Mi scooter that Bird uses, and we're in a busy Bird market. He usually parks it within line of sight and often has to pester riders to quit trying to ride it away. In one case, a Bird charger took it
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by kawfey 8y ago
Learn by doing. I taught myself morse code by actually using morse code on ham radio, not by drilling myself silly with code practice tools (which is imperative to learn the alphabet, but after that it's less practical). There's n
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by kawfey 8y ago
A mercury switch is probably not as reliable as a wind vane in high turbulence.
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by kawfey 8y ago
Legally speaking, it's "messages encoded for the purpose of obscuring their meaning" [0] that's illegal, which is fraught with conflicting interpretations and loopholes. [0] https://www.ecfr.gov/cgi-bin&#
255.
by kawfey 8y ago
> Southwest alone operates the biggest 737 Max fleet in the world, with 280 planes. Incorrect, they operate 35 Max8's, and have 237 total firm orders for Max8 and 30 for Max7. https://www.planespotters.net/airline&#x
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by kawfey 8y ago
Not all airports have sinks? It's not like they filter what's coming out of water fountains anyway.
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by kawfey 8y ago
The linked article also mentions the plane was smoking, and fire was coming from the engines. This is new information to me that I think is being overlooked, because if MCAS was enabled erroneously, it's unlikely the plane would have c
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by kawfey 8y ago
I really liked that half popped popcorn.
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by kawfey 8y ago
My twenty-something friends and I used facebook extensively to run all aspects of our social lives, but now we exclusively use it for messaging and event planning. Nobody reads posts, comments, or notifications unless it has to do with an e
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by kawfey 8y ago
This feels true to me. I was making coffee with an aeropress in my office, right next to the 3-carafe Bunn automatic coffeemaker. Someone poured a cup of office coffee, while I was pressing my aeropress. They asked about it - how does it wo
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by kawfey 8y ago
Yes, but it looks nice on a shelf in the background of an Instagram photo. Plain old conical drippers have exactly the same effect on the coffee, but they don't make it look like you're performing a science experiment.
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by kawfey 8y ago
https://krebsonsecurity.com/2018/11/u-s-secret-service-warns...
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by kawfey 8y ago
The headline lead me to believe they were finding people with Baofeng amateur radios, so as to prosecute them... Indeed, there are repeaters out there who's owners have "banned" Baofeng operators[0] since they believe the r
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by kawfey 8y ago
An incredible visualization of winds aloft (and several other parameters can be seen at https://earth.nullschool.net/ . Currently the jetstream (i.e. winds at 250 hPa altitude) are hitting around 230mph (360km/h).
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by kawfey 8y ago
I feel like this is yet another something I'll have on my PC for a few days, forget about it, and come back to find it defunct for my desires because there's still reddit.
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by kawfey 8y ago
As an amateur radio operator, LEDs have been the absolute bane of my (and thousands of other city-based hams') receiver. Those same modules not only produce ungodly amounts of heat, but also loads of radio-frequency interference that h
267.
by kawfey 8y ago
One of the things I loved best about Wunderground was their prominent display of the textual SFD. Now it's gotten a lot more mainstream, and still have increasingly accurate forecasts, but the SFD link has been dropped from the forecas
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by kawfey 8y ago
Despite the tirade of anti-facebook/google/amazon blogs and posts in the last 5 years, I'm still not convinced that "being tracked" in my day-to-day life is a negative thing. I still don't perceive that my priv
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by kawfey 8y ago
>Some [telegraph] operators, in an attempt to spare their networks from further damage, disconnected their batteries from the lines, only to find that they could still send messages using only the current provided by the storm. That&#x27
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by kawfey 8y ago
A.) True. B.) News outlets are sensational. This is an aircraft, but people equate the future to flying "cars." Also, pedantically speaking, car doesn't have to mean automobile. Car comes from carriage, which was drawn by a h

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