sci.electronics.repair@googlegroups.com

Google Groups

Michael Terrell <terrell.michael.a@gmail.com>: Aug 11 01:47PM -0700 On Monday, August 10, 2020 at 12:16:56 AM UTC-4, Jeff Liebermann wrote: > <https://www.law.cornell.edu/cfr/text/47/15.247>   > >Thanks for replying!   > Y'er welcome.     What kind of chocolate bar doesn't melt from body heat? Back then, they were wrapped in thin aluminum foil which would reflect most of the Microwave RF, as well.

Jeff Liebermann <jeffl@cruzio.com>: Aug 11 06:04PM -0700 On Tue, 11 Aug 2020 13:47:08 -0700 (PDT), Michael Terrell   >What kind of chocolate bar doesn't melt from body heat? Back >then, they were wrapped in thin aluminum foil which would >reflect most of the Microwave RF, as well.   Good point.   It appears that it was actually a peanut cluster bar, not chocolate: <https://www.popularmechanics.com/technology/gadgets/a19567/how-the-microwave-was-invented-by-accident/> "He loved nature (due to his childhood in Maine)... especially his little friends the squirrels and the chipmunks," the younger Spencer says of his grandfather, "so he would always carry a peanut cluster bar in his pocket to break up and feed them during lunch." This is an important distinction, and not just for the sake of accurate storytelling. Chocolate melts at a much lower temperature (about 80 degrees Fahrenheit) which means melting a peanut cluster bar with microwaves was much more remarkable.   Sorry for the recycled misinformation.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

Michael Terrell <terrell.michael.a@gmail.com>: Aug 11 06:33PM -0700 On Tuesday, August 11, 2020 at 9:04:58 PM UTC-4, Jeff Liebermann wrote: > 80 degrees Fahrenheit) which means melting a peanut > cluster bar with microwaves was much more remarkable.   > Sorry for the recycled misinformation.   No problem. I've worked around high power RF (5MW EIRP UHF)and RADAR (2MW pulsed). The story just didn't sound right. Also, you would think that he would have felt the heat from his body adsorbing that much RF.   I might joke with you, nut I wouldn't try to insult you. Life is too short to waste on spreading anger. Like your 1200 sq foot house. My garage is 30' by 40'. :) Unfortunately, I recently lost the neutral to my electrical service, and I suffered a lot of damage. A huge pile of MOVs died, trying to maintain the side that went high. I discovered that the Dell Optiplex 780 computer that was on, will run at 67VAC. I only have a few working lights, and one good outlet, until the repairs are completed. It went out on June 10th, and was out for a few days under two months. I had to switch to Hughesnet, to get back on line. Sepectrum refused to restore my service. The open neutral fried the shield on the cable drop, since it was bonded on both ends. I wouldn't let them into the house with no lights, and a lot of boxes in the way of where they wanted to go. The previous owner used particle board instead of plywood for the floor in that room, and hid it with cheap carpet. Spectrum's answer? "We don't do emergency repairs!"   I still have no phone service. I can't get power to the Magic Jack. I have to go outside to get cell service, and sometimes a mile away. It was a killer to lose 40 active outlets at my computer desk. :(

bilou <bilou@sfr.fr>: Aug 12 02:49PM +0200 > 2. When the phone is on > 3. when the battery has been removed > thank you. I don't see why current steal protecting devices would not work with phones. AFAIK they are based on the grid dip principle. RFID devices don't need battery either and can provide much more information. Both solutions do not use destroying levels of RF energy. Wrapping the target with aluminium foil is a good way to render them useless.

Michael Terrell <terrell.michael.a@gmail.com>: Aug 11 01:49PM -0700 > Line drop. Bullshit. Use #6 copper UF cable, and the line-drop for a 400-foot run is 2.53 volts at 8 amps (1920 watts).   > Repeat: cut the BS and do it right.     Or use a boost transformer to compensate for the drop, but only to power the pump.

legg <legg@nospam.magma.ca>: Aug 11 03:38PM -0400 >connectors and through-hole parts. Often can "fix" this stuff by tapping >the board to find the intermittent joint or just re-touching all the >connectors but my first round of that didn't work, this time.   You can always measure IC output pin voltages during the discontinuity, before pulling them.   In a close-packed assembly, this isn't always much fun - but once exposed, they're easier to replace anyways.   V13 is just digital.   RL

etpm@whidbey.com: Aug 11 09:41AM -0700 On Mon, 10 Aug 2020 19:36:39 -0500, Jon Elson <elson@pico-systems.com> wrote:   >detector, that can be used to home in on likely objects, then check them for >magnets with the compass.   >Jon I have the county maps and have seen the one corner marker I'm looking for but I think it is now under about 6 feet of tipped over hemlock tree root ball. If there is an iron pipe as you suggest it is also under that root ball. How often do surveyors drive this pipe? Is it a law? I like that magnet idea. I wonder how hard it will be to detect if it is under 6 feet of dirt and roots? Eric

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com.