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joined 1 year ago
[–] [email protected] 1 points 7 hours ago (1 children)

You discounted space dust.

No I didn't


it would thermalize and radiate.

This is not my paradox, and it's not really a paradox at all, as the big bang model explains it nicely. There are many nice articles on the topic of you'd like to read more about it.

[–] [email protected] 3 points 16 hours ago (3 children)

Yes. But why is there an absence of light?

If there are infinite stars, then every direction you look would encounter a star. (Things stay the same brightness per subtended angle as they get far away. Space dust doesn't matter, as it would thermalize and radiate.)

So, the universe can't have infinite luminous matter, be static and ageless, because if it were then the night sky would look like the surface of a sun.

This may all seem obvious, but it's neat that you can figure that out with the naked eye.

[–] [email protected] 9 points 18 hours ago (7 children)

https://en.m.wikipedia.org/wiki/Olbers%27s_paradox

Olbers's paradox, also known as the dark night paradox or Olbers and Cheseaux's paradox, is an argument in astrophysics and physical cosmology that says the darkness of the night sky conflicts with the assumption of an infinite and eternal static universe.

The night sky being dark has some profound cosmological implications.

[–] [email protected] 8 points 18 hours ago

Widely regarded as the best Seinfeld episode is The Contest. It's about who can go the longest without masturbating, but what makes it great is that they never say that explicitly


it's just euphemisms and insinuation. And it's hilarious IMHO.

I believe they initially wanted to spell it out, but the networks wouldn't let them (I could be wrong). Definitely for the better that they danced around the topic the way they did.

(Yes I know, Jerry Seinfeld is a problematic person, I'm just trying to answer the question...)

[–] [email protected] 2 points 19 hours ago

I've been pleasantly surprised by vegan blue cheese dressings, but blue cheese itself...yeah, it's got a long ways to go.

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

What, the curtains?

[–] [email protected] 16 points 1 day ago

TIL NASA is woke.

(/s shouldn't be required but here we are...)

[–] [email protected] 4 points 1 day ago (1 children)

To each their own though? I can't imagine why anyone would want something other than i3 (or similar), because almost by definition the DE is not the program I fired up my computer to interact with, and i3 "gets out of the way better" than most others in my experience.

But...that's just my use case. It's a horrible UX for most people, just happens to work well for me.

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

I feel old...when I was learning how to run Linux I started with an old 386 (maybe 486?) my dad wasn't using. I think it had 32MB RAM, which was fancy for those machines.

We had dial up at the time, so only one machine could be on the Internet. So, I set up a modem on the x86, plugged into an Ethernet hub (switch?), and learned enough ipchains (this was before iptables) to share a connection. It also ran Samba, an AFP server, and probably FTP and HTTP (just for local access)


but it worked for filesharing.

It could also run MP3 streaming software which amused me because the machine itself was too slow to decode MP3 (but that's not necessary to stream).

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

Crash Team Racing PS1 was IMHO better than Mario Kart N64. The wumpa fruit added a neat dimension, and the ability to select weapons for battle mode was great.

[–] [email protected] 6 points 1 day ago (3 children)

I just wish we'd have neither inflation nor deflation.

Some tech has followed this pattern. For example: entry level Mac laptop in ~2000 was the iBook, priced at $1599 ($3k+ in today's dollars). The current entry level Mac laptop (M4 Air) starts at $999


cheaper in absolute dollars, and way cheaper in relative dollars.

(Macs are just an example since Apple doesn't have a very extensive product list, so there's only one "entry level" laptop to choose from. And yes it's fair to ask if the relative specs have just gotten worse, but I think this is also the opposite


the iBook was iirc criticized as being underpowered, whereas the M4 Air is afaik well regarded.)

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

I am the Walrus?

 

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 1 year ago* (last edited 1 year 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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