Do we have to lease out 24GHz?

Started by Winfield Hill in sci.electronics.design45 minutes ago 24 replies

NOAA's Advanced Technology Microwave Sounder (ATMS), passively-measures water-vapor levels, using weak signals at 23.8 GHz. NOAA uses this...

NOAA's Advanced Technology Microwave Sounder (ATMS), passively-measures water-vapor levels, using weak signals at 23.8 GHz. NOAA uses this data for their critical hurricane forecasting. FCC Chairman Ajit Pai wants to lease the 24 GHz band for 5G networks. NOAA and many scientists, have said this will ruin the measurements, severely degrading the storm forecasts we now rely on....


ot great razor

Started by John Larkin in sci.electronics.design60 minutes ago 18 replies

This is...

This is great: https://www.amazon.com/PREMIUM-RAZORS-Handle-6-Blade-SWIPE/dp/B01EBB92ZC/ref=pd_bxgy_121_img_2/1 30-0955006-2941134?_encoding=UTF8&pd_rd_i=B01EBB92ZC&pd_rd_r=e0ef488e-7e42-11e9-b31d-a3211b75eab 9&pd_rd_w=5xjwG&pd_rd_wg=o1BVK&pf_rd_p=a2006322-0bc0-4db9-a08e-d168c18ce6f0&pf_rd_r=12RZW2F3GNT0 T052Y19V&refRID=12RZW2F3GNT0T052Y19V&th=1 It shaves really close. Drag force is huge, wit


Speaker id needed

Started by AK in sci.electronics.basics6 hours ago 4 replies

This is from a cordless phone. I think it is a speaker. Phone uses 2.4 volt battery. I was wondering if it would work in a 9 Vdc...

This is from a cordless phone. I think it is a speaker. Phone uses 2.4 volt battery. I was wondering if it would work in a 9 Vdc circuit? https://www.dropbox.com/s/yy6rwm0vib91010/PhoneSpeaker.jpg?dl=0


Counterfactual computation

Started by Jeroen Belleman in sci.electronics.design6 hours ago 32 replies

My attention was drawn (by George, thanks!) to Kwiat's web page below: I found a paragraph about "Counterfactual Computation" in...

My attention was drawn (by George, thanks!) to Kwiat's web page below: I found a paragraph about "Counterfactual Computation" in there, near the end. I cite: "... one can perform a measurement on a quantum computer and obtain information about the solution to a problem without the computer actually runni


Honeybees 'Whoop'

Started by Tim Williams in sci.electronics.design6 hours ago 19 replies

Win Hill: does this count as topical?...

Win Hill: does this count as topical? :) https://www.newscientist.com/article/2121275-honeybees-let-out-a-whoop-when-they-bump-into-each- other/ Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Design Website: https://www.seventransistorlabs.com/


Troubleshooting 'shorted' power rails

Started by Anonymous in sci.electronics.design6 hours ago 46 replies

I had two cases in a row recently of many-layer power-planed boards with power supplies that wouldn't come up above a diode drop, and I was able...

I had two cases in a row recently of many-layer power-planed boards with power supplies that wouldn't come up above a diode drop, and I was able to use a trick devised for the first one to solve the problem on the second one, too -- I set a current-limited supply to ~30mA & left the board to stabilize thermally. I then looked for the 'hot' parts with an IR thermometer. Worked like a charm...


64k line limited spreadsheet is still line limited when using program with larger limit.

Started by legg in sci.electronics.design7 hours ago 17 replies

Component marking database has hit the 64k line limit of pre-2010 excel. When I try to work on the spreadsheet using post-2010 excel,...

Component marking database has hit the 64k line limit of pre-2010 excel. When I try to work on the spreadsheet using post-2010 excel, the program still chokes at the same line count while boasting 10^6 lines in it's spec and 'help' files. What's going on? RL


Memorial Day Impeachment

Started by Unlisted in sci.electronics.design7 hours ago 19 replies

Our veterans fought and many gave their lives for America. Now we have Donald Trump who wants to destroy America. Memorial Day is a good day...

Our veterans fought and many gave their lives for America. Now we have Donald Trump who wants to destroy America. Memorial Day is a good day to Impeach this crook, liar, and hate filled anti-American. Vote to Impeach this Memorial Day! And dont forget to burn pictures, and statues of Trump during your local Memorial Day events.


From breadboard to soldering

Started by AK in sci.electronics.basics11 hours ago 39 replies

I am ready to transfer my circuit from breadboard to PCB Prototype Circuit Solder BREADBOARD. Any advice appreciated. Is 22 gauge hookup...

I am ready to transfer my circuit from breadboard to PCB Prototype Circuit Solder BREADBOARD. Any advice appreciated. Is 22 gauge hookup wire what I need? I was going to order these. https://www.ebay.com/itm/2x-5-x-10-cm-DIY-PCB-Prototype-Circuit-Solder-BREADBOARD-Discrete-and-D IP/141677397222?hash=item20fca184e6:g:lUAAAOSwPcVVvnaf SPDT switches 4 conductor wire to run my photoce


light leakage through loose threads, teflon tape

Started by Winfield Hill in sci.electronics.design13 hours ago 20 replies

We used teflon tape to solve a problem with light leakage, through loose threads, in a Thor Labs 2" optical tube. Comments or...

We used teflon tape to solve a problem with light leakage, through loose threads, in a Thor Labs 2" optical tube. Comments or suggestions? -- Thanks, - Win


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