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jhallenworld

4,964 karma · joined October 31, 2013

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jhallenworld··on My Experience Getting Licensed in Ham Radio (2020)
You should think about also getting a GMRS license (no test- except navigating the FCC website). This allows you to use 22 UHF FM talk channels, up to 50W. The license extends to all of your family members, so it's good for things like hiking in the wilderness. You can buy a self-contained repeater for it.
jhallenworld··on My Experience Getting Licensed in Ham Radio (2020)
I did this back in 2005 or so: code was still required, and I just barely passed it- by one punctuation mark they said. Then I took all the written tests. The technical parts are easy if you're an EE. It felt weird having an extra class with no operating experience.
jhallenworld··on Flappy Bird for Android, only C, under 100KB
>pac man on the atari or snes is maybe less than 100kb

Off by an order of magnitude! Pac-man sizes:

    4K: Atari 2600 (it's bad)
    8K: Atari 800
    16K: Atari 800 Ms. Pac-Man
    24K: Original arcade machine (Z80)
BTW, Atari 2600 "Flappy" (4K): https://atariage.com/store/index.php?l=product_detail&p=1038
jhallenworld··on Hezbollah hand-held radios detonate across Lebanon, sources say
>I’m talking about apostasy

Yeah, I was guessing...

>As far as fixing them? I really don’t give a shit.

What would you suggest then? Kill them all?

jhallenworld··on IBM is quietly axing jobs, source says
Maybe this is true skill-wise, but there is also productivity to consider. I knew a band 9, who was definitely not going to be promoted STSM (band 10), but was extremely productive. I'm sure he was paid well, better than most band 10s.

Band 10 and above include good soft-skills, people who can persuade the industry and organization, give TED talks, etc.

jhallenworld··on Hezbollah hand-held radios detonate across Lebanon, sources say
LGBTQ+ and even women's rights are a recent phenomenon in the west, and still unfolding (and could revert). If you want the less enlightened society to embrace these rights, how do you propose to do it? Take their land? Killing their kids? Open air prison? I don't think these strategies are going to do it..
jhallenworld··on Hezbollah hand-held radios detonate across Lebanon, sources say
I'm impressed that Hezbollah was not using Baofeng.
jhallenworld··on CUNY paid Oracle $600M for its HR software (2013)
My school tried this in the early 90s: they held a contest to make class scheduling software. I don't think it worked out- I certainly did not enter it.

This was to replace the previous system: professor John van Alstyne just did it over a weekend.

jhallenworld··on Windows NT vs. Unix: A design comparison
This is all fine, but Window-NT file access is still slow compared with Linux- this shows up in shell scripts. The reason is supposedly that it insists on syncing during close, or maybe waiting for all closed files to sync before allowing the process to terminate. Shouldn't close finality be an optional async event or something?
jhallenworld··on Windows NT vs. Unix: A design comparison
Wchar_t is definitely the biggest annoying difference in that it shows up everywhere in your C/C++ source code.
jhallenworld··on Windows NT vs. Unix: A design comparison
NT has its object manager.. the problem with it is visibility. Yes, object manager type functionality was bolted-on to UNIX, but at least it's all visible in the filesystem. In NT, you need a special utility WinObj to browse it.
jhallenworld··on What happens when you touch a pickle to an AM radio tower
You can still see operating Alexanderson Alternators running at SAQ (Grimeton Radio Station). Not AM, but the same equipment was used for AM by Fessenden.

https://en.wikipedia.org/wiki/Alexanderson_alternator

https://www.youtube.com/watch?v=yYZjz745yGA

jhallenworld··on What happens when you touch a pickle to an AM radio tower
A thing that just happened in Boston is that Bloomberg swapped their relatively low power transmitters with iHeart's Alternative Rock 92.9. This is awesome for Bloomberg's reach, but it means that we now have an AM rock station, probably for the first time since the 1960s: 1330 AM. We'll see how long this lasts.. Red Hot Chili Peppers on AM right now..
jhallenworld··on Intel Honesty
Oh right, 14 nm.. it was so long ago now :-)

Also I assume that both AMD and Intel bought FPGA companies for FPGA co-processor acceleration opportunities. I don't think this has panned out.. I know Microsoft has their bing FPGA accelerator, but I don't think FPGAs have made any dent in the AI space, and are certainly not essential in any of the hyperscalers. Maybe AMD will sell Xilinx at some point.

>they partitioned off the entirety of the transceivers to a separate tile fab'd by TSMC and sellotaped to the edge of the Stratix 10

awesome.. I could imagine it was too risky to redesign the transceivers.

jhallenworld··on Intel Honesty
I see, this is their newest node or close to it.

https://www.anandtech.com/show/21504/intel-18a-status-update...

"For Intel, getting an external PDK out for a leading-edge process node is no small feat, as the company has spent decades operating its fabs for the benefit of its internal product design teams. A useful PDK for external customers – and really, a useful fab environment altogether – not only needs process nodes that stick to their specifications rather than making bespoke adjustments, but it means that Intel needs to document and define all of this in a useful, industry standard fashion. One of the major failings of Intel’s previous efforts to get into the contract foundry business, besides being half-hearted efforts overall, is that they didn’t author PDKs that external companies could easily use. "

But some bad news today:

https://www.reuters.com/technology/intel-manufacturing-busin...

jhallenworld··on The coming long-run slowdown in corporate profit growth and stock returns [pdf] (2023)
So can the fed keep interest rates high for long? I think they can't.. because then government debt is too expensive. Pushback from treasury will be intense.
jhallenworld··on Intel Honesty
The Altera merger pain is maybe enlightening.

Altera 10-series FPGAs were massively delayed due to Intel's 10 nm fab problems. But I speculate that there was also a big difference in toolchains, does anyone know for sure? I mean Altera was using TSMC previously, and I presume were using industry standard tools: Cadance / Synopsis. But I would guess Intel was running their fab on home-grown tools... what is the status these days? For example I know for sure that IBM's synthesis was "Booledozer".

It's interesting because maybe Intel will spin out the fab business. But are they immediately ready to become a commercial fab business instead an Intel-only business? What's the toolchain like for Intel fab?

jhallenworld··on Immovable Ladder
>Wood can last a very long time in hot, dry environments.

There are 5000 year old wood beams in the Egyptian pyramids.

But also: https://en.wikipedia.org/wiki/Kalambo_structure

jhallenworld··on Immovable Ladder
The key to open the door is held by a Muslim, Adeeb Joudeh. His family holds it by tradition for the last 800 years, the idea is that he's a disinterested third party. There is an interview with him where he talks about visits by Bush and Putin. He was impressed by Putin's visit.. at that time Putin was making an impression with the Russian Orthodox community, so he made the most of it.

There are regular riots between the christian sects over turf within the Church. Just search on youtube..

jhallenworld··on The history of orthogonal frequency-division multiplexing (2009)
This is a great talk if you want to know how it's implemented:

"Recent Interesting and Useful Enhancements of Polyphase Filter Banks: fred harris"

https://www.youtube.com/watch?v=afU9f5MuXr8

jhallenworld··on Lessons from Ancient File Systems
It answers the question of where experienced programmers then got their experience. In the mid 70s, Sigma-7 was another popular 32-bit machine, but I don't know anything about its OS.
jhallenworld··on Lessons from Ancient File Systems
Perhaps they did it to save RAM since you are buffering the current sector anyway. An alternative is CP/M's extent-based filesystem, where the meta-data is all in the directory entry. But I think space allocation algorithm is more complex for it.

I like the OS/8 file allocation scheme: files are always contiguous. Only one growing file can be open for writing and it allocates space out of the contiguous free space (actually it owns all of the free space until the file is closed, where the unused space is then given back). If you run out of disk space, you have to compact the disk, eliminating space taken up by deleted files.

I like it because it's illustrates the surprising fact that you can get away with only one file open for writing for most things.

jhallenworld··on The Origin of Emacs in 1976
The TECO version of EMACS is always a kick to look at, here is the dired code:

http://pdp-10.trailing-edge.com/mit_emacs_170_teco_1220/01/e...

From this we can conclude that humans do not need any nice things like programming languages, assemblers or compilers to program effectively.

jhallenworld··on CrowdStrike Update: Windows Bluescreen and Boot Loops
Stock buybacks help push these up. Buybacks are a way to pay investors at capital gain tax rates instead of normal income (dividend) rates.
jhallenworld··on No reasonable expectation of privacy in one's Google location data
You have access to your own location data, at least if you have location history enabled. It's an interesting question if defense can request this data from google if you don't have it enabled..
jhallenworld··on No reasonable expectation of privacy in one's Google location data
One consolation: it works both ways with this kind of data. For example, it can corroborate your story.
jhallenworld··on What Was Chevron Deference? (2023)
Theoretically maybe, but I find it difficult the believe that a conservative court will do anything to liberalize border policing. More likely they will find/invent some new justification to allow it, possibly requiring even tougher policing.
jhallenworld··on ITER fusion reactor to see further delays, with operations pushed to 2034
Time to push for muon-catalyzed fusion:

https://en.wikipedia.org/wiki/Muon-catalyzed_fusion

There is one company trying it:

https://www.acceleron.energy/

Muon production efficiency optimization is a worthwhile engineering problem. The accelerator needed to make the muons can already be made more efficient than assumed in the classic papers.

Muon-catalyzed fusion does not require the unlikely combination of 100M degree plasma generating huge power right next to cryogenic superconducting magnets.

Muon-catalyzed fusion can already run continuously, unlike plasma fusion. There is none of this "it can run for x seconds" nonsense.

The efficiency needs to be greater than 1, but all parts of the power plant are included in this calculation. So, for example, making a more efficient steam turbine helps. So consider..

A tritium breeding blanket is needed for all kinds of D-T fusion including plasma to locally make the tritium fuel from the fusion neutrons. If you include U-238 in it, you double the power output thanks to all of the resulting fissions.. just as in an H-bomb. This could push the plant efficiency above 1..

jhallenworld··on A modern 8 bit design, built using 1950s thermionic valves
The directly-heated cathode (meaning that the heater is the cathode) tubes have another advantage: they are nearly instant turn-on, no warm-up needed. Same as vacuum fluorescent displays.

Reminds me: there are new tubes based on VFD:

https://www.korgnutube.com/en (only 12mW heater power)

Very old 1920s tubes also used direct cathodes (but used a huge amount of heater power). If you look at the circuits, they had to jump through hoops to have the desired grid to cathode bias while at the same time providing the heater current. I think this would be easier for logic gates: set all of them to ground.

jhallenworld··on Microsoft breached antitrust rules by bundling Teams and Office, EU says
Surely they know all of this and yet have made the decision that they don't care about any goodwill.
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