mrgriscom

Self-experimentation allows one to conduct science without the imprimatur of the IRB. IRBs, in the name of ethics, fashion themselves as the sole arbiter of what science may be done. Ergo, any loophole that circumvents their authority is prima facie "unethical".

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 localize a beat to within 50ms.

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 equipment, even receive only. Some even ban using GPS!

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 control will induce a small voltage. Yes, I had direct sampling mode turned on (but the rtl-sdr.com V3 can do this through the normal antenna port). I pointed the remote at the sensor (admittedly quite close) and saw a signal centered on 38 kHz in the waterfall, and was able to export the binary pulses.

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 digital, so higher res and in color)

Digital Radio Mondiale -- digital radio but for shortwave

Analog TV -- if you're in an area that still broadcasts this (unlikely), you can receive a black & white picture and closed captioning. If no OTA broadcasts remain, you can use the analog output of a VCR or DVD player

GPS -- rtlsdr is capable of decoding GPS, Galileo, and BeiDou! (Likely not GLONASS since each satellite uses a separate frequency, spreading the signal beyond the sdr's bandwidth)

Hidden secondary audio broadcasts inside FM radio (like the stereo audio hack, but using higher frequencies in the demodulated stream)

Brazilian outlaws and UHF pirates using open repeaters on US military satellites launched in the 70s

TEMPEST / "Van Eck phreaking" where you can remotely read a nearby screen due to leakage from the monitor or video cabling

Instrument landing system -- if you're near an airport you can tune to a runway's ILS frequency and see the signal change as you move from the left side of the runway to the right

Infrared remotes -- stick an IR photodiode in the antenna port and you can demodulate codes from remote controls

Passive radar -- Tune into a very narrowband signal like a VOR or ATSC pilot signal, set your decimation extremely high (i.e., trading bandwidth for dynamic range) and you can see nearby planes in the area from their doppler-shifted reflections of the main signal

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 are common, which can accept both 15A and 20A versions of their respective voltages. You won't find outlets that can accept both a 120V and 240V plug.

(The standard US outlet "type B" is a NEMA 5-15)

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 putting it back into my account... maybe to attract less suspicion and execute a larger fraud later?? Anyway, my bank reversed the withdrawals and I just got to keep the $400 the scammers deposited in.