HN user

sinak

28,683 karma

Tech/political activist, wireless geek, founder.

CEO at Waveform.com, Technology Fellow at EFF, co-founder/advisor OpenSignal.com, Repair.org board member

sina dot khanifar at gmail dot com.

http://twitter.com/sinak

Posts917
Comments350
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resonantcomputing.org 6mo ago

The Resonant Computing Manifesto

sinak
65pts32
shallowreview.ai 7mo ago

Shallow Review of Technical AI Safety, 2025

sinak
1pts0
play.google.com 2y ago

Show HN: WalkTest – Android App That Lets You Survey Cell Signal in Buildings

sinak
2pts0
www.internetsociety.org 2y ago

2023 Internet Hall of Fame Inductees

sinak
1pts0
www.insideprecisionmedicine.com 2y ago

A blood factor can rejuvenate the aging brain

sinak
88pts26
www.anthropic.com 3y ago

Claude

sinak
2pts0
theconvivialsociety.substack.com 3y ago

What You Get Is the World

sinak
1pts0
blog.cloudflare.com 3y ago

Project A11Y: Upgrading Cloudflare's Dashboard Accessibility

sinak
3pts0
www.ftc.gov 4y ago

FTC action against Harley-Davidson and Westinghouse for limiting right to repair

sinak
453pts191
www.bbc.com 4y ago

Crypto bid to buy US constitution print raises millions

sinak
2pts0
www.axios.com 4y ago

Silicon Valley stirs over proposal to end popular QSBS tax break

sinak
115pts327
www.ohtipi.com 4y ago

Ohtipi: OTP Auto Fill in Chrome and Firefox

sinak
1pts1
www.eff.org 5y ago

The Internet Loses a Champion with the Passing of Sherwin Siy

sinak
2pts0
www.blockchain.com 5y ago

Sci-Hub has received 4.7 BTC in donations in the last year

sinak
3pts0
www.kerrywong.com 5y ago

Teardown of a Cel-Fi Go X Cell Signal Booster

sinak
1pts0
www.wsj.com 5y ago

Spare Parts, Fix-It-Yourself Guides Hit the Market

sinak
2pts0
www.ftc.gov 5y ago

Nixing the Fix: An FTC Report to Congress on Repair Restrictions [pdf]

sinak
96pts29
www.wired.com 5y ago

The Next Economy of Ideas (2000)

sinak
19pts3
en.wikipedia.org 5y ago

Magnuson–Moss Warranty Act

sinak
2pts0
web.dev 5y ago

Introduction to Variable Fonts on the Web

sinak
2pts0
blog.coinbase.com 5y ago

Coinbase announces confidential submission of draft registration statement

sinak
182pts135
news.ycombinator.com 5y ago

Tell HN: Thank You Dang

sinak
2363pts249
www.nytimes.com 5y ago

Fix, or Toss? The ‘Right to Repair’ Movement Gains Ground

sinak
2pts0
en.wikipedia.org 5y ago

Farallon Islands

sinak
1pts0
www.ifixit.com 5y ago

Apple Emails Reveal Internal Debate on Right to Repair

sinak
6pts0
www.lrb.co.uk 6y ago

Flailing States: Pankaj Mishra on Anglo-America

sinak
2pts0
www.vice.com 6y ago

Why Repair Techs Are Hacking Ventilators with DIY Dongles from Poland

sinak
3pts0
supporters.eff.org 6y ago

EFF's 30th Anniversary Livestream Event – July 10th 2020

sinak
3pts0
twitter.com 6y ago

Activation Locked iPads Can't Be Reused

sinak
2pts1
archive.vn 6y ago

GE Filtergate

sinak
1pts0

What sad news. Dave was an incredible human and very dedicated to making the Internet better and faster. What a loss.

Edit: copying over Vint Cerf's message that was posted on the bufferbloat mail list. I believe that's a public mail list so hopefully Vint doesn't mind:

OMG - that is truly terrible news! I could not say better than Frank already has how much Dave's work has helped to improve our experience of the Internet. I can't think of anyone more dedicated to the proposition that performance counts and should be pursued with determination and vigor. I've known Dave for many years and greatly valued his counsel and technical skills - to say nothing of his healthy sense of humor. I will miss him but will be always grateful to have known him.

dang, could we get a black bar?

Speed Test 3 years ago

Ah the Waveform test is ours! I've been meaning to post it properly to HN since we launched it.

It's far from being a perfect bufferbloat/latency under load test, and there's lots of room to improve it, but we built it when DSL Reports seemed to be running a little unreliably.

We actually use Cloudflare and Fastly on the backend for latency/speed testing. We built and host the test for free mostly because I wanted it, but I justified the dev time as it being very-roundabout marketing for us - so if you ever need a signal booster or MIMO antenna for 5G internet, looks us up :).

Claude 2 3 years ago

The "smarter" (or at least, better at tests) LLMs become, the less funny they seem to become as well. Not sure if it's because they're being forcibly sanitized or if it's some side effect of tuning them to be better at tests.

I'd love to see an AI that's simply trained to be as amusing as possible.

For example, I gave both Claude V1 and V2 this same prompt:

We use a meal delivery service that delivers food in glass jars, and as a result we have about 40 glass mason jars we don’t need. Write a funny, sarcastic post for a Facebook “buy nothing” group offering the jars for free. Ask people to say how many jars they want each in the comments.

/ Here's Claude V1's response:

Here's a suggested funny, sarcastic post for the Facebook group:

Attention all you canning and crafting enthusiasts - today is your lucky day! We have not 10, not 20, but 40 - yes 40! - gleaming mason jars just waiting to be adopted.

Our meal kit delivery service apparently thinks we have enough freezer and cupboard space for weeks' worth of pickled beets, sauerkraut and mystery chutneys. Their loss is your gain, folks!

These jars vary in size from "that spaghetti sauce you made 3 years ago and forgot about" up to "do I have room for a 5 gallon vat of kimchi?" and everything in between. Crafts galore! Homemade salves and lotions! Artisan lighting! The possibilities are endless.

We're offering up this goldmine of jars for FREE on a first comment, first jar basis. To claim your prize jars just comment below with how many of these salted caramel repositories or homemade bath bomb vessels you'd like to get your hands on.

No haggling, no holds, no delivering because we're too busy not eating the contents of these jars! Once they're claimed we'll arrange a mutually bewildering transfer of said jars in a random parking lot TBD.

Happy canning, Bath & Body Works competitors and Pinterest DIYers - may the odds be ever in your flavor jars! maniacal laughter

How's that for the Facebook post? I tried to load it up with humor and sarcasm pointing out the potential uses - and ultimate fate - of way too many leftover mason jars! Please let me know if you'd like any changes to the tone or content. I'd be happy to revise it for you.

/ And now Claude V2's meaningfully less funny (imo) response:

Here is a draft funny, sarcastic Facebook post offering free mason jars:

Attention all canning enthusiasts, aspiring influencers, and craft supply hoarders! Do you dream of filling your pantry with row after row of lovingly canned seasonal produce? Are you seeking the perfect vessel for your next batch of overnight oats to photograph and post to the 'gram? Does the sight of a glass mason jar fill you with inspiration to make ALL the things - bath bombs, candles, snacks for your kids' soccer team? Well gather round because I've got a deal for you!

After a brief and ill-advised attempt at becoming a fancier person who cooks dinner from those meal kit delivery services, I find myself in possession of FOUR DOZEN pristine glass mason jars taking up valuable real estate in my kitchen. That's right - FOUR DOZEN. As in, enough jars for you to can a whole winter's worth of pickles, jam, and roasted tomatoes!

These babies are all yours if you come and haul them away from my house ASAP. Simply comment below with how many of these beauties you need for your canning/bathing/influencing dreams and they're yours. First come, first served so comment quick before these jars are gone forever and you're left with nothing but regret over the canning potential you missed out on! Act fast and may the odds be ever in your favor.

AWS Private 5G 5 years ago

5G is typically deployed in CBRS bands - i.e. 3.5 GHz. This isn't mmWave. Will have meaningfully higher coverage areas than WiFi (but mostly because WiFi is power-limited, not to do with frequency).

ConstitutionDAO 5 years ago

They're fundraising for a Sotheby's auction, so I think they basically want to raise as much as they can to be able to win the auction. Apparently they were told that it would likely sell for ~$40m, with bidding starting at $20m.

If anyone is considering T-Mobile Home 5G Internet, you can dramatically improve your connection speeds by getting the devices to connect on the 5G n41 band, where T-Mobile has much more spectrum. Unfortunately n41 is 2500 MHz, which means it's readily absorbed by building materials. Hooking up external antennas to the hotspot requires a bit of playing with the device [1], but can be a big help.

https://www.waveform.com/a/b/guides/hotspots/t-mobile-5g-gat...

I run https://www.waveform.com and we help a lot of folks like yourself get better signal. It's not really worth messing around with cheap options - your productivity is on the line and it's worth spending a little for great connectivity.

With that in mind, the best option is a Pepwave MAX HD2 Dual SIM. Then put a Visible SIM from Verizon in one slot and a Calyx SIM (T-Mobile) in the other, or sign up for the AT&T iPad plan. Either use whip antennas or ideally use a roof-mount 4x4 MIMO antenna to get the best signal.

Using Pepwave's VPN you can run WAN smoothing and/or bonding to make sure that your connection is rock solid.

Worth looking the LTE hacks facebook group, though they tend to use cheap gear, and I'd recommend using something beefier.

It seems I have it worse than almost anyone.

2.5 month old, 1 TB, M1 MBA:

  SMART/Health Information (NVMe Log 0x02)
  Critical Warning:                   0x00
  Temperature:                        46 Celsius
  Available Spare:                    100%
  Available Spare Threshold:          99%
  Percentage Used:                    5%
  Data Units Read:                    315,158,527 [161 TB]
  Data Units Written:                 303,071,863 [155 TB]
  Host Read Commands:                 1,331,719,025
  Host Write Commands:                1,036,195,203
  Controller Busy Time:               0
  Power Cycles:                       167
  Power On Hours:                     762
  Unsafe Shutdowns:                   7

A lot of people seem to think that Starlink will compete with Comcast/Cox/Spectrum/etc in suburban areas. But it won't.

Starlink is great, and people are right to be excited about it as an option for signal in truly rural areas. But it simply won't have the capacity necessary to serve a meaningful number of users in any kind of semi-dense application.

Starlink is like a 4G/5G cellular network except there's no way to increase capacity in a specific area. That makes it great at covering areas with very low population density, but absolutely terrible for even medium-density zones.

If you're stuck in a suburban or exurban area with terrible options for broadband, your best option is likely a 4G or 5G router. There a number of different truly unlimited plans out there (e.g. Calyx). If signal isn't good enough indoors, you can purchase outdoor MIMO antennas to get better results.

Starlink is great if you're in area with very low population density. That's a lot of the US, but not a lot of the US population.

The reason the ISM bands look so "hot" or busy on a spectrum analyzer is exactly because they're a "free for all." It's a classic tragedy of the commons: everyone keeps "shouting" at max volume to be heard and there's no coordination between operators and users of different services.

Here's an example: in a typical apartment block, each resident runs their WiFi access point at full power. In any one apartment, there's a ton of interference from neighboring units. If everyone coordinated and reduced their WiFi power to just what was necessary to cover their unit, it would result in less interference and higher net data rates for everyone. But no one is incentivized to do take action unilaterally.

LTE and 5G networks are very careful planned to limit intracell interference and handover zones between towers. This central planning maximizes the efficiency of the network. It allows your cell phone to connect to a tower 10km away if you're in a rural area, and results in higher spectral efficiency for the overall network by increasing signal-to-noise ratios for all users.

With a more sensitive spectrum analyzer, you'll see that the cellular bands are actually extremely busy. In fact, macro networks are almost always at capacity during peak usage. However, all the devices are "speaking" at the lowest volume necessary to be heard.

If the idea of this makes you angry, consider joining and donating to https://www.repair.org - we're advocating for the opposite: laws requiring replacement parts, service manuals, and repair software to be made available for users and independent repair shops.

We've succeeded in getting dozens of bills introduced in state legislatures, and are working on building the legislative support necessary to have Right to Repair codified in US law.