Maybe someone can explain why the modulation scheme matters, instead of the frequency range. AM less sensitive to phase noise? Or is it that AM radio typically means some frequency range?
FM is a phase modulation scheme, so random noise is largely discarded, as instead you have a phase tracker tracking frequency modulation.
Basically AM will always have noise, but because of how simple it is unless the frequency is being totally trampled on you can get * something* from it.
FM by contrast will have almost perfect tracking with very low audible noise in the output… right up until the PLL loses tracking and you lose it all.
AM is 530 kHz – 1700 kHz, using 10 kHz spacing
FM is 87.9 MHz to 107.9 Mhz with 200kHz spacing.
IMHO, there are enough AM driver information stations that I would be upset when I eventually learned I couldn't receive them on a car with no AM radio. But it might take several years for that (especially if it's an EV; I'm not taking that into the mountains, probably)
Why not?
Why would you be out of gas in the mountains in the first place? Because you got snowbound and ran the car every couple hours to get some heat out of it.
Nobody in Bumfuck, Nowhere is going to have the tools or technicians to try to repair an EV. It will likely be a long and expensive tow to somewhere that does.
> Because you got snowbound and ran the car every couple hours to get some heat out of it.
Complete tangent, but how do EVs handle low-traction surfaces? Seems like they might do better on average from the weight, but that’s a wild guess on my part.
The real danger on highways is traction control. It can hide how slippery the road is and allows you to easily outrun your braking ability.
In the northern Midwest, you’ll see car after car in the ditch when it hasn’t snowed in a while.
As for people forgetting how to drive in the snow over the summer? That seems to be universal. Seen it in Ohio, Massachusetts, Vermont, and New Hampshire.
I can take gas cans to enhance range of an ICE, if conditions are marginal. There's no way to enhance the range of an EV.
exclusive of digital modes, the most distance effective signal is CW. unmodulated signal, on or off.
AM uses a significantly lower frequency and ground wave propagation is much more likely which gives AM the benefit of being able to reach "over the horizon" where FM simply cannot.