Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×

Comment Re: AM radio is nothing in terms of volts. (Score 2) 303

"Consider the $10,000 deposit laws.. If you deposit $10,000 in cash, the bank has to report it to the IRS. Try depositing $9,999..... You think the IRS is going to remain blind to this?"

The law also explicitly calls out "structuring" transactions to avoid these transactions that will go over the reporting amounts.

Comment Re:Illusionary conclusion (Score 1) 31

The main criticism I have of this study is they don't even try to falsify their assumptions. They could have easily conducted the same analysis in a comparable setting without any known contamination and looked for similar signals.

False. There is no comparable setting without any known contamination.

Comment Re:Did someone actually say this? (Score 1) 303

I'm not sure it saved them any money, as here in the UK they come with a compressor and patch kit instead of the tyre.

Spoken like a guy who has never bought a compressor or a tire.
The compressors they give you with the car are trash. They are $10-$20 at wholesale. You can get a pretty decent compressor (that you would want to reuse) for less than the cost of one tire, at retail prices.
That's still not why they did it, of course. They DID do it for packaging reasons. Not having a spare means not having to have space for the spare. But they ARE saving money.

Comment Re: Good Grief (Score 1) 191

And no, you canÃ(TM)t watch them literally every second of the day, itÃ(TM)s simply not possible.

It is possible if both parents don't have to go to work. People used to literally be with their children all day for the first few years of their lives. They didn't want them to wander off into the woods and get eaten by a wildcat or whatever.

Comment Re:Young kids are smarter than you think (Score 1) 191

Preventable with effort.

It might be a lot of effort, but that doesn't mean it's not possible.

What I actually think is that most parents severely underestimate the difficulty of parenting, so they half-ass it and then if everything works out OK anyway they tell themselves they did a good job. Outcomes are the easiest way to measure, but if they only succeeded by chance, then it really wasn't their doing.

If you're not willing to sanitize your household to make it child safe then you're not a good parent.

If you became a parent accidentally when you couldn't afford to make your household child safe, guess what? Also not a good parent.

I do have a good idea of how hard parenting is, that's one reason I chose not to do it. I've had several opportunities. I always passed, sometimes resulting in the end of a relationship. It was always the right call.

Comment Re: AM radio is nothing in terms of volts. (Score 1) 303

You're assuming that they need to actually control the noise.

True. The text of the bill says nothing about harmful interference. However, there is the implication that the receivers being mandated might actually work, and not just for the vehicle operator, but for the vehicle in the next lane as well.

The vehicles in the next lane can always slow down or speed up or change lanes to move away from your car if your car makes its radio too noisy, so that's likely to be a non-issue. I haven't measured the field strength from an EV to see if it exceeds those limits, though, so I could be wrong.

Note that the FCC allows AM transmitters up to 1705 kHz under section 15.219 without a license as long as the ERP is below 100 milliwatts and the antenna is no more than 10 feet tall. There's no transmitting antenna in an EV, so as long as the ERP is below 100 mW, presumably that qualifies. For frequencies above that limit, section 15.223(a) gives you a field strength exception, and given that we're talking about wideband noise, presumably no stricter narrowband limit should apply, so the limit is likely 100 microvolts/meter at a distance of 30 meters, which is, I think, in the neighborhood of 200 mW ERP. The stricter limits under section 15.209 presumably do not apply because it is not an intentional radiator.

That said, there may be additional rules that I don't know about, so take that with a grain of salt.

Comment Re:AM radio is nothing in terms of volts. (Score 1) 303

AM Radio is absolutely nothing in terms of vaults, because you can literally run one off of a AA battery for hours.

This has nothing to do with saving money. Because when they build these things en-masse and buy them from a supplier that's already making them, they're probably already cheaper than they could build themselves And it wouldn't even add a dollar or so to the cost of the car.

I wouldn't say the cost is quite that low. Modern head units are all digital, so you have to take into account the cost of adc circuitry and integrating it with the software stack. Between that and antenna considerations, it does carry an additional (though negligible) engineering burden.

Either the FM radio in the car is analog or it is doing some sort of software-defined radio thing, but either way, analog-to-digital conversion is still effectively occurring in the radio circuitry already, which means that could be done for AM just as easily. So that part of the cost should be quite close to zero beyond the cost of the AM receiver circuit itself (and for SDR, it would probably be exactly zero).

The real question is whether an AM tuner can usefully function with that much environmental noise, or whether you need to come up with something significantly more complex in terms of the antenna(s), demodulator(s), etc. It's the frequency and the modulation that make it problematic, not the analog nature of the signal, because notwithstanding the existence of HD Radio, a large percentage of FM is analog, too.

Slashdot Top Deals

We warn the reader in advance that the proof presented here depends on a clever but highly unmotivated trick. -- Howard Anton, "Elementary Linear Algebra"

Working...