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joined 1 year ago
[–] [email protected] 5 points 5 hours ago

As far as I can tell the "mostly true" (rather than true full stop) is this:

"The federal government does not have a separate, dedicated revenue stream exclusively for disaster aid," said Joel Tirado, an institute spokesperson. "FEMA funding comes from general revenue aggregated nationally. So, it isn’t possible to know how much of California’s taxes go to disaster relief specifically."

So basically, money is fungible, and we (CA) send the most money (absolutely, though not per capita).

[–] [email protected] 13 points 1 day ago

WireGuard, and an external HDD. Run at a remote location for off-site backup.

I do this with a raspberry pi 3 at the in-laws. I copied the data over locally before setting it up, and after that it's just nightly incremental rsync, which is fine even over my slow (35Mbps) upload.

[–] [email protected] 3 points 2 days ago

You can turn it off, at least for ext4: https://lwn.net/Articles/784041/

[–] [email protected] 19 points 2 days ago* (last edited 2 days ago) (3 children)

Although you can use case insensitive filesystems with Linux, and case sensitive filesystems with macOS. I believe the case sensitivity is a function of the specific filesystem


but yeah, practically, the root for Linux is always case sensitive, and APFS ~~ain't~~ is only if you ask it to be ( https://support.apple.com/lv-lv/guide/disk-utility/dsku19ed921c/mac ).

[–] [email protected] 7 points 3 days ago (1 children)

Sounds like one use-case of for same-sex couples to have biological children together. Which is pretty neat IMHO!

Not to say that the more macabre use cases don't exist, of course.

[–] [email protected] 5 points 3 days ago

...could pave the way for same-sex couples to have biological children together.

As usual, it sounds like the technology could be used for genuinely good things.

It could be used for horrible things too, yes, but that's often how it goes.

[–] [email protected] 12 points 6 days ago

You know you fucked up real good when Mr. Oatmeal gets involved.

[–] [email protected] 7 points 1 week ago

In undergrad I took a class on sleep, and it really stuck with me. I previously had some FOMO-esque aversion to going to bed early, but after that class if I was done with the day and I was tired, I just went to sleep.

It's been a good mentality for us now that we have a small kid, too. No shame in going to bed at 8...

[–] [email protected] 2 points 1 week ago (1 children)

No, that's not really a useful way of modeling it for the case of light traveling through a linear medium.

The absorption/re-emission model implicitly localizes the photons, which is problematic


think about it in an uncertainty principle (or diffraction limit) picture: it implies that the momentum is highly uncertain, which means that the light would get absorbed but re-emitted in every direction, which doesn't happen. So instead you can make arguments about it being a delocalized photon and being absorbed and re-emitted coherently across the material, but this isn't really the same thing as the "ping pong balls stopping and starting again" model.

Another problem is to ask why the light doesn't change color in a (linear) medium


because if it's getting absorbed and re-emitted, and is not hitting a nice absorption line, why wouldn't it change energy by exchanging with the environment/other degrees of freedom? (The answer is it does do this


it's called Raman scattering, but that is generally a very weak effect.)

The absorption/emission picture does work for things like fluorescence. But Maxwell's equations, the Schrödinger equation, QED


these are wave equations.

[–] [email protected] 3 points 1 week ago

What you say?!

[–] [email protected] 8 points 1 week ago (2 children)

I kinda assumed any Mars mission would include some simple centrifugal pod. Seems like even if it's just for sleeping it would be useful.

 

People often complain about San Francisco's public transit


and to be sure, it's not perfect by any means (multiple separate agencies doesn't help). But the historic streetcars are pretty neat!

They're painted with the livery of various historic streetcars from all over the country (and a few international, I think). Best of all, they run alongside the modern fleet


same route, same fare.

 

Noticed a few days ago that Sutro Tower's red blinking lights are now white. Just asked them on their website form, but wondered if anyone else knows the story with this.

Personally, I miss the red ones!

5
submitted 10 months ago* (last edited 10 months ago) by [email protected] to c/[email protected]
 

Howdy!

I got my Technician in early 2000s, and last year finally upgraded to Extra. Looking to set up a very basic shack.

I'm looking for an HF setup, with most of my use probably using digital modes, but would like the ability to use voice.

Current transceiver is on loan from girlfriend's dad, a Ten-Tec Scout 555


50W HF unit with separate modules for each band. One limitation of this is that the modules set the mode, so it's LSB on 40m, making e.g. FT8 not possible (without some hacking of code or perhaps hacking the module).

Antenna is end-fed with an off-the-shelf 49:1. Currently only have 20m half-wave, but have just enough room for a 40m half-wave in the attic, which is the ultimate goal.

For digital modes, it looks like there are sort of 3 classes of radio:

  • "full digital" where the radio has e.g. a USB port and handles audio, transmit, and frequency set.
  • Some computer-control with RS232, but uses computer audio+adapter to transmit.
  • No digital, use adapter to transmit. This is what the current setup uses (and it works great!)

I'm leaning towards a conventional transceiver, e.g., something from ICOM, Kenwood, Yaesu, (or others) rather than an SDR unit. I'd like the ability to go up to 50-100W if possible.

I don't have a hard-and-fast budget; would like to keep it <$1000 if possible; mostly just looking at used transceivers. Something like a Kenwood TS-590 looks pretty amazing and very "plug-and-play" (but pushing up against price). Something like a Yaesu FT-920 looks pretty feature-rich too; and even something more affordable like an ICOM 706 or even a 725 is probably more radio than I need. Or just grab a new 7300 and call it a day!

Anyway...clearly, I don't know exactly what I want, but figured I'd ask folks with more experience if they have any wisdom. Thanks!

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