Viewing profile — mrgriscom

He should add these concept displays from Posy https://www.youtube.com/watch?v=RTB5XhjbgZA

The circuit breaker from the restoring power scene is real too: https://www.google.com/search?q=westinghouse+spb-100&udm=2

This is plainly false though. You're saying beats can't be localized to less than one second of precision (regardless of track length, which already smells suspect). Humans can loc…

There's a concrete ship wrecked just offshore of Cape May Point in NJ. It has been deteriorating for many years and soon nothing will remain above the waterline.

I did raise eyebrows once of the person in the row behind me. I said I was listening to ATC and that seemed to placate him. I do believe most airlines have a blanket ban on radio e…

None of the founding fathers were US citizens at birth because the US didn't exist yet.

A photodiode (BPV23NF iirc) connected straight to the dongle's SMA connector. Yes, I believe it would be operating in photovoltaic mode, where the incident IR light from the remote…

SDR is amazing! Here are some more things you can do with your RTL-SDR after the first 50: Meteor weather satellite reception (Russian counterpart of the NOAA satellites, but digit…

This question ate away at me too, and I also scratched the itch: https://mrgris.com/projects/landfall/ Specifically mine deals with what you'd hit looking across the ocean from a c…

This is why you don't travel back in time and kill Hitler

Ah yes, I have seen those before (quite rare). IIRC they don't have holes for the grounding prong, which should prevent plugging in any modern 240V appliance.

I think you're confusing a NEMA 5-20 (120V, 20A) and NEMA 6-20 (240V, 20A). Each has one blade sideways but they're mirror images of each other. T-slot varieties of both outlets ar…

I just had some fraudulent withdrawals on my bank account pretending to be paypal. They did the two sub-$1 authorization transactions, then took out $400 then "reversed" it by putt…

Always a classic: http://harmful.cat-v.org/software/xml/s-exp_vs_XML

In my dabblings with SDR, playing around with analog video was one of the highlights. Something about this technology that was such a prominent yet opaque feature of my youth and n…

Residents of the US territories are US citizens with the exception of American Samoa

A walk down memory lane for sure... I loved my Eee PC 901 and still have it. I used it to build a 'carputer' / navigation system before I had a smartphone. http://mrgris.com/projec…

It is quite difficult to visualize and it took me a long time to "get it". The path of the sun's annual motion relative to the stars is determined solely by my physical progress in…

It's a misconception that the figure-8 shape is due to the eccentricity of the Earth's orbit. Most of the variation in the sun's horizontal apparent motion is also due to Earth's a…

This is incorrect. The analemma would still be a figure-8 even with a circular orbit, but it would be symmetric -- the orbital eccentricity only adds the asymmetry we see in Earth'…

I used the typical GDAL tools -- gdalwarp, gdaldem, with some associated scripts of my own. I recall not using GDAL's image pyramid builder as I ran into some issues with wrapping …

Author here. To provide some context, my main impetus for creating this map was to facilitate my interest in topographic prominence [ https://en.wikipedia.org/wiki/Topographic_prom…

I've actually been here: http://mrgris.com/travel/blog/labrador/2/ Quite a weird place, though definitely not 50m tall.

"The provisions of this Agreement requiring disclosure and assignment of Inventions to Google do not apply to any invention that I have developed entirely on my own time without us…

Are there any teletext systems still in use that you could receive over-the-air with an SDR?