tjohns

35 ms·

421.
by tjohns 5y ago
At least in my car (2013 Chevy Volt), the backup camera is on an internal KVM-type switch. The moment I switch into reverse the camera forcibly takes over the infotainment screen. You can occasionally see the signal flicker when the switch
422.
by tjohns 5y ago
Keep in mind that not all aircraft are required to transmit an ADS-B signal. Not to say it couldn’t be done, given the right approvals. You’d possibly be asked to publish a NOTAM to tell aircraft to stay away. The FAA has a publication on t
423.
by tjohns 5y ago
GPS notoriously has poor altitude resolution. For this reason, GPS approaches are technically not considered "precision" approaches. WAAS (GPS plus a correction signal transmitted by separate geostationary satellites) improves the
424.
by tjohns 5y ago
Not all aircraft broadcast ADS-B positions. And as a low-time pilot who’s been bit with laser beams from people’s Christmas decorations, I’d argue the big sky theory doesn’t apply here.
425.
by tjohns 5y ago
VLC has built-in support for Blackmagic SDI output cards: https://github.com/videolan/vlc/blob/master/modules/video_ou... Though a quick search through online forums suggest that module isn't c
426.
by tjohns 5y ago
The biggest difference is digital interconnects can carry extra data for surround sound. (Also, unique for optical connections, it's easier to avoid ground loop hums.)
427.
by tjohns 5y ago
I think the better question is why SDI video connections aren't available on any consumer devices. While HDMI is nice for consumers because it carries audio/data, SDI cables are cheap (just a single coax cable!) and easy to route
428.
by tjohns 5y ago
Ethernet Over HDMI is used by newer AV receivers to support eARC (extended audio return channel). The older ARC spec would work with any HDMI cable, but bandwidth limitations only allowed compressed 5.1 surround sound. eARC uses the higher
429.
by tjohns 5y ago
The whole point of satellite Internet is to fill in connectivity gaps where you can’t otherwise run high-speed fiber or wireless towers. It does not avoid government control. Even ignoring local legalities, at the very least it will be unde
430.
by tjohns 5y ago
Yes, personally speaking, I’d prefer the native app given the choice. :) I’m not personally arguing for PWAs over native apps! That said, I also know there are some apps that will never be developed as native apps (due to cost issues), and
431.
by tjohns 5y ago
The liability waiver is printed on the back of the lift ticket, and you accept it by virtue of using the ticket. (I don’t know about the legalities of that as a contract, but it’s how it’s almost always done at ski resorts.)
432.
by tjohns 5y ago
I mean web apps, but not the broader web. Things that would have an analog as native mobile or desktop apps. This doesn’t really apply to content sites. Not everything makes sense offline. If you need to perform real-time lookups, or if the
433.
by tjohns 5y ago
Off the top of my head: The web app working while offline, local storage, and background sync. The idea is to be able to build web apps that have feature parity with native apps. (Especially on mobile, where apps are expected to integrate w
434.
by tjohns 5y ago
There is no rule against using digital signatures for authentication. Your actual message just has to be in the clear. The exact wording is in 97.113: "No amateur station shall transmit... messages encoded for the purpose of obscuring
435.
by tjohns 5y ago
Ham radio relies on self-policing within the community to ensure compliance with the rules - the biggest one being "no commercial use". The "no commercial use" rule ensures companies aren't using the limited ham rad
436.
by tjohns 5y ago
It’s UL94, so lower octane (94 octane, as the name suggests). However, this is still fine for lower performance aircraft that make up the majority of the GA fleet. There’s been a lot of interest in it, especially in light of the recent disc
437.
by tjohns 5y ago
For what it's worth, unleaded avgas is already available at some of the Bay Area airports as of recent, and it's currently priced cheaper than traditional leaded avgas.
438.
by tjohns 5y ago
Personally, I use feedbin.com on the web, and Reeder on the Mac destkop (which optionally syncs to Feedbin's API). Unfortunately neither meet your Win/Linux requirement, but just pointing out there are some excellent options out t
439.
by tjohns 5y ago
How do you exercise right of way over another submarine that you don't know the position of? The whole point of submarines is that they're stealthy. Active sonor would give away their position. They're basically swimming blin
440.
by tjohns 5y ago
Heck, I don’t want that much power near my hand . Anything beyond ~5 watts you have to start worrying about RF burns if you happen to touch anything metallic.
441.
by tjohns 5y ago
It depends on your location, antenna, and the aircraft's elevation, but in the bay area I'll often pick up aircraft all the way out to Sacramento. Sometimes quite a bit further. Of course, the higher the aircraft the further you c
442.
by tjohns 5y ago
> Neither does the US in an overwhelming majority of airspace under 10,000’MSL. You are of course correct. But that's getting into the finer details of the FARs, and there's only so much comment space here. We could also talk a
443.
by tjohns 5y ago
Assuming they're flying under Part 107 or as a public aircraft, the police drone operators would have the same obligation to report accidents to the NTSB as would a regular aircraft pilot.
444.
by tjohns 5y ago
There's a photo of the damage here: https://www.avweb.com/aviation-news/172-substantially-damage... There's also a copy of the incident report here: https://wwwapps.tc.gc.ca/Saf-Sec-Sur/2
445.
by tjohns 5y ago
And vice versa as well. Do not access personal accounts from a corporate device.
446.
California digital Covid-19 vaccine record(myvaccinerecord.cdph.ca.gov)
6 points by tjohns 5y ago|10 comments
447.
by tjohns 5y ago
> If it is, how would you convince regular people that the state of the art “something something sodium chachacha” crypto algorithm in the app is the best for them? Personally, I'd make a separate page with more details for the subs
448.
by tjohns 5y ago
First off, this looks like a nice project. So please take this as constructive criticism: 1. This really should have screenshots published. Especially when comparing with something polished like AirDrop, the UX is important. You even call t
449.
by tjohns 5y ago
It’s a complex handshake, very closely related to the same one used for the EMV chip used on modern credit cards.
450.
by tjohns 5y ago
Drones are great for many missions... until you send them to an enemy that can jam the RF link used for remote control. Until we develop the technology to build an AGI, there’s still a need for fighters with human beings on board for autono

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