Rolling resistance and air resistance increase nonlinearly. And when you take stop-and-go traffic into account, I imagine that also works in aircrafts' favor.
ADS transponders can be made down to 500 grams. That's half the mass budget for a 1u cubesat. But the smallest transponder I could find has a power output of 130 watts. Typical cubesats have a power budget of about 2 watts for communications, per Wikipedia (and 130 watts is the maker's idea of "low power consumption").
"Because of tumbling and low power range, radio-communications are a challenge. Many CubeSats use an omnidirectional monopole or dipole antenna built with commercial measuring tape."
It happened twice to my immediate family, though I wasn’t present for either occasion:
My mother’s Miata suffered a blowout at highway speed, and my grandfather was sideswiped by a semi truck when it suffered a blowout, again at highway speed.
Kudos to both Chevrolet’s engineers and Mazda’s; the former for keeping the Impala survivable in a wreck, and the latter for keeping the Miata controllable during a blowout at speed.
It’s mandatory when HIPAA, and not pard 97, governs the dissemination of protected health information, and when your radio is your only way to call for a pickup. Though you should only transmit the relevant portions enciphered, of course. And it’d take a special kind of asshole to press charges for HIPAA violations under the circumstances, but I’d rather my ass be covered than not.
No, there is no exception for this, with the TWO exceptions for model aircraft and space stations.
So...you’re agreeing with me?
If by “statute and regulation” you are referring to the boilerplate emergency exemption rules found in almost every part of the communications regulations,
Yes.
then you need to be very careful that what you are sending actually DOES have a direct impact on the safety of life or property required before those rules take effect, and that there is no other means of communications available. A lot of people get tripped up by that last requirement there. “When no other means of communications is available”.
Probably true. But given the stated assumption of SAR volunteers, there are a few assumptions baked into that. IE, most people would call 911 for a bailout if they were hurt and lost, so one cannot presume a working cellular network in such a situation by the very nature of the task. Granted, given the attacks against the SS7 protocol, and (presumably) increasing Stingray use, one should not necessary presume a cellular phone call to be compliant with the spirit of HIPAA any more. When do you suppose ambulance dispatch will be available via Signal?
The problem with frequency hopping is it’s hard to keep it from stepping all over someone else’s allocation.
The problem with crypto is it’s hard to tell it from jamming signals.
Why is this a bad combo? Because you’re jamming the radio gear used by lots of deep-pocketed companies at once. Someone will be able to make life unpleasant enough for the FCC to motivate them to track you down.
If you’re going to do FHSS and encryption, don’t be an idiot - keep it in an ISM band.
Encryption, on amateur radio, is completely forbidden except for a few times where it’s completely mandatory.
Controlling remote hardware, for one - especially model aircraft! There’s also some compelling arguments to be made about control of remote radios, such as repeaters. In this case, encryption isn’t being used to obscure the content of the message, but to authenticate the message and prevent spoofing.
Participating in a search-and-rescue operation, or any other time you have cause to transmit someone’s medical records or other PII. In radio, rules tend to (formally, even!) stop mattering, being enforced, etc. Even statute and regulation says they have to stop being enforced, when violating rules is necessary to protect life, limb, or property.
I find that most of them I've laid hands or eyes upon in person lately have all of those compromises you point out. The only exception is the "poorly thought out high DPI screens" part, since most of them omit that feature entirely.
Don’t forget that Google developed PageRank with the intent of licensing it to search engines - but nobody bought it because their human-curated lists were all about the paid placement.
I’d prefer BSD, but at this point I’m willing to consider any Unix distro whose UI isn’t a bag of dicks, (Unity, I’m looking at you) and where I don’t need to drop into the terminal unless I want to.
Honestly, I like Chromebooks. (Especially for handing to people who don’t “do computers” - automating myself out of a job supporting family IT bullshit is nice! Last time I did it, though, it was with MacOS, but I’d definitely be pitching Chrome these days) That’s not what I’m looking for, here, though. Though, I suppose, a hacking-shed or devmode Chromebook (pixel?) might actually suit me quite nicely.
That said, since when did they have a decent (read: reliable, drama-free) way to run MS apps on Unix?
But “Network Utility” alone is enough to make me seriously consider never abandoning OSX, even if I have to refurb an old white MacBook and run the oldest supported software to make it snappy again.
Planetary Ventures is still, last I checked, planning on launching a constellation of thousands of these telescopes to support their space-mining business venture.
Slashdot Mirror
You've never seen what happens when you lock some king-sized candy bars in a gun safe, and give kids a toolbox, have you?
Drag - or the lack thereof.
Rolling resistance and air resistance increase nonlinearly. And when you take stop-and-go traffic into account, I imagine that also works in aircrafts' favor.
ADS transponders can be made down to 500 grams. That's half the mass budget for a 1u cubesat. But the smallest transponder I could find has a power output of 130 watts. Typical cubesats have a power budget of about 2 watts for communications, per Wikipedia (and 130 watts is the maker's idea of "low power consumption").
"Because of tumbling and low power range, radio-communications are a challenge. Many CubeSats use an omnidirectional monopole or dipole antenna built with commercial measuring tape."
That's not really gonna fly...
It's actually a large array of inductors, which needed to operate without any parasitic losses.
It was a LOT more than three coils
Per recent reports, the cockpit voice recorder shows that they were in the middle of it.
And according to Boeing's simulations, they only had forty seconds between stick shaker activation and a rapid unplanned deceleration, so...
But now we know the scope of the problem, and it is daunting.
If you need a card number and expiration date, it's in the Wallet app. And presumably tokenized, as well.
It happened twice to my immediate family, though I wasn’t present for either occasion:
My mother’s Miata suffered a blowout at highway speed, and my grandfather was sideswiped by a semi truck when it suffered a blowout, again at highway speed.
Kudos to both Chevrolet’s engineers and Mazda’s; the former for keeping the Impala survivable in a wreck, and the latter for keeping the Miata controllable during a blowout at speed.
Go look into something called "resonant turbocharging" -- you can use this to increase the charge pressure without moving parts.
You mean by the sun?
It’s mandatory when HIPAA, and not pard 97, governs the dissemination of protected health information, and when your radio is your only way to call for a pickup. Though you should only transmit the relevant portions enciphered, of course. And it’d take a special kind of asshole to press charges for HIPAA violations under the circumstances, but I’d rather my ass be covered than not.
So...you’re agreeing with me?
Yes.
Probably true. But given the stated assumption of SAR volunteers, there are a few assumptions baked into that. IE, most people would call 911 for a bailout if they were hurt and lost, so one cannot presume a working cellular network in such a situation by the very nature of the task. Granted, given the attacks against the SS7 protocol, and (presumably) increasing Stingray use, one should not necessary presume a cellular phone call to be compliant with the spirit of HIPAA any more. When do you suppose ambulance dispatch will be available via Signal?
The problem with frequency hopping is it’s hard to keep it from stepping all over someone else’s allocation.
The problem with crypto is it’s hard to tell it from jamming signals.
Why is this a bad combo? Because you’re jamming the radio gear used by lots of deep-pocketed companies at once. Someone will be able to make life unpleasant enough for the FCC to motivate them to track you down.
If you’re going to do FHSS and encryption, don’t be an idiot - keep it in an ISM band.
Why is this a problem? Because bandplans change.
No they wouldn't. Maybe a strongly worded letter...
Encryption, on amateur radio, is completely forbidden except for a few times where it’s completely mandatory.
Controlling remote hardware, for one - especially model aircraft! There’s also some compelling arguments to be made about control of remote radios, such as repeaters. In this case, encryption isn’t being used to obscure the content of the message, but to authenticate the message and prevent spoofing.
Participating in a search-and-rescue operation, or any other time you have cause to transmit someone’s medical records or other PII. In radio, rules tend to (formally, even!) stop mattering, being enforced, etc. Even statute and regulation says they have to stop being enforced, when violating rules is necessary to protect life, limb, or property.
I find that most of them I've laid hands or eyes upon in person lately have all of those compromises you point out. The only exception is the "poorly thought out high DPI screens" part, since most of them omit that feature entirely.
Don’t forget that Google developed PageRank with the intent of licensing it to search engines - but nobody bought it because their human-curated lists were all about the paid placement.
Time you spend operating the computer is time you can’t spend using the computer?
It probably has something to do with the local broadband monopoly not delivering anything fit for service
I’d prefer BSD, but at this point I’m willing to consider any Unix distro whose UI isn’t a bag of dicks, (Unity, I’m looking at you) and where I don’t need to drop into the terminal unless I want to.
Honestly, I like Chromebooks. (Especially for handing to people who don’t “do computers” - automating myself out of a job supporting family IT bullshit is nice! Last time I did it, though, it was with MacOS, but I’d definitely be pitching Chrome these days) That’s not what I’m looking for, here, though. Though, I suppose, a hacking-shed or devmode Chromebook (pixel?) might actually suit me quite nicely.
That said, since when did they have a decent (read: reliable, drama-free) way to run MS apps on Unix?
Normally I don’t reply to trolls.
But “Network Utility” alone is enough to make me seriously consider never abandoning OSX, even if I have to refurb an old white MacBook and run the oldest supported software to make it snappy again.
I’m shopping for a Unix laptop that runs MS Office. Got a buying guide I can work from?
Enough cores to relatively rapidly field twenty and a half gigatons of "relatively" small bombs.
Planetary Ventures is still, last I checked, planning on launching a constellation of thousands of these telescopes to support their space-mining business venture.