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J Burns <burns4@nowhere.com>: Oct 31 04:15PM -0400 On 10/31/14, 6:14 AM, Mike Marlow wrote: >> Problem, solved.   > How are ya supposed to grab a quick cigarette without getting caught that > way?   Just holler to the teacher to turn on the ventilator because you just stunk up the bathroom.

J Burns <burns4@nowhere.com>: Oct 31 04:19PM -0400 > When I was a kid, the only classrooms with bathrooms were kindergarten > classrooms. I guess it does make sense that they all would now.   When I was a kid, schools didn't have bathrooms. At home, my mother made us bathe every week.

"Danny D." <dannydiamico@gmail.com>: Oct 31 09:03PM Stormin Mormon wrote, on Fri, 31 Oct 2014 08:52:10 -0400:   > CA is noted for the liberal left leaning culture. > Very possible the entire school system is run on self esteem, and > fragile feelings, instead of old fashioned tried and true.   Does anyone here have high school kids? Would you ask *them* what they use for a bathroom pass? I'd be interested in the results.

krw@attt.bizz: Oct 31 07:00PM -0400 On Fri, 31 Oct 2014 01:25:48 -0400, "Michael A. Terrell"   > It's a lot less disruption to the class. I saw them during the last >hurricane, when the building was used as a shelter for the disabled and >senior citizens.   Less interruption? How so? When we were in high school (long before) there were no "bathroom passes". Classes were 50 minutes with 10 minutes between. Young adults were expected to be potty trained.

krw@attt.bizz: Oct 31 07:01PM -0400 On Fri, 31 Oct 2014 16:19:25 -0400, J Burns <burns4@nowhere.com> wrote:   >> classrooms. I guess it does make sense that they all would now.   >When I was a kid, schools didn't have bathrooms. At home, my mother >made us bathe every week.   OK, Abe. ;-)

krw@attt.bizz: Oct 31 07:01PM -0400 On Fri, 31 Oct 2014 06:14:15 -0400, "Mike Marlow" >> Problem, solved.   >How are ya supposed to grab a quick cigarette without getting caught that >way?   Wait for the class to get over, then skip the next.

sam@repairfaq.org (Samuel M. Goldwasser): Oct 31 04:39PM -0400 > magnetron. Do you have a tv repair place anywhere nearby? They would > probably be willing to loan you a probe since they do not use them > very often any more with solid state displays.   Geez, the magnetron is probably less than $20 on eBay.   -- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html   Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.

Cydrome Leader <presence@MUNGEpanix.com>: Oct 31 10:05PM > You really need to test the HV before proceeding to replace the magnetron. Do you have a tv repair place anywhere nearby? They would probably be willing to loan you a probe since they do not use them very often any more with solid state displays.   A yoke tester should have the proper ranges too- if it has the correct probe. None of the ones on ebay do.

chuck <chuck@deja.net>: Oct 31 04:53PM -0500 On Thu, 30 Oct 2014 12:01:48 -0700, dplatt@coop.radagast.org (David Platt) wrote:   > station" (increasing its relative strength), or "aimed at an angle > away from the undesired station" (to put the interfering station in > a "null" in the antenna's reception pattern).     I have a Denon tuner where the narrow ceramic filters were not narrow enough to weed out the station I wanted to eliminate. I bought narrower filters from Digikey which resolved my problem. Chuck

"Ron D." <Ron.Dozier@gmail.com>: Oct 31 10:16AM -0700 Cobwebs that get wet at either the pole junction or internal to the house.   The inside problems I found.   But, we were having issues where the phone would cut out when it rained. DSL was worse, but would connect.   One of the techs actually came back and said "Here was your problem", and brought back a piece of wire with some of the insulation chewed. He said, while I was at it, I removed about 1000' from your telco line.   Generally, by the time the tech came out, the problem would go away. e.g. It dried out.

bud-- <null@void.com>: Oct 31 12:55PM -0600 On 10/30/2014 11:46 PM, Michael A. Terrell wrote: >>> repeated. Pick up phone, and someone was there?! albeit the connection >>> sounded like old fashioned long distance.   >> This reminds me of a strange service call I had when I worked as a Bell System repair technician. It was a rural area and the customer complained that none of her phones would ring, but that she knew somebody was calling whenever her dog howled. Sounded crazy to me, but it turns out that she was on a party line which requires a good earth ground on the third (yellow) wire for the ringers. Well, the unlucky dog was chained to a poorly grounded water pipe which also held the ground clamp and wire for the telephone protector. Whenever she got a call the poor dog got a 90VAC jolt! That's one of the reasons the telcos quit grounding to water pipes in favor of the electrical power neutral.   (US practice.)   You mean the service "ground", not the neutral.   Phone techs had better not be connecting anything inside the service panel.   A convenient point of connection is the wire to the earthing electrodes, but it is not the only place the connection can be made.   Recent services have an "intersystem bonding termination" where phone and coax entry ground connections must be made.     > The reason that they switched was that the NEC required them to. Some > fools couldn't tell the difference between a water and a gas pipe.   The NEC did not require them to.   Water pipes (10 or more ft of metal in contact with the earth) must still be used as one of the power system earthing electrodes.   That metal water pipe can still be used as the ground for phone entry protectors (if there is no intersystem bonding termination). In the past the connection could be anywhere. Now it must be within the first 5 ft inside the building. That is the same place the connection must now be made for the water pipe as an earthing electrode.   Gas pipes are grounded at locations like furnaces.   Corrugated stainless steel tubing (CSST) is often used for gas piping inside a building because it is flexible. There have been fires and explosions, and I think all manufacturers now require the stuff to be connected to the earthing system near the building entry. (There have been fires where the stuff was grounded to manufacturer's specs. An electrical inspector recommended electricians not make the ground connection, then they will not be involved in the lawsuit. I would not use CSST.)

bud-- <null@void.com>: Oct 31 01:08PM -0600 > Turns out he had two ground rods driven in and for whatever reason there was a ground gradient. A slight ground gradient at power line is not necessarily proof of a fault, depends where they are. And really, we are only talking about interfereing with video which is what, a volt P-P ?   There is not enough information to tell how this was set up. But all earthing electrodes are required to be bonded together into one system. That includes any lightning rod system.   The cable shield is grounded to the earthing system at the entry to the house. The service neutral is also connected to the earthing system. For overhead distribution I assume the cable drop is grounded at the tap at the feeder cable. The feed cable is grounded at at least some of the poles. That puts the cable drop in parallel with the house service neutral, and the neutral voltage drop will appear on the shield. Only way I can see to avoid it is if the cable drop is isolated at the source tap (like transformer coupled). I assume significant 60Hz is removed with a high pass filter. What is the signal voltage on cable?

etpm@whidbey.com: Oct 31 11:10AM -0700 On Thu, 30 Oct 2014 22:33:56 -0700 (PDT), junebug1701 >> repeated. Pick up phone, and someone was there?! albeit the connection >> sounded like old fashioned long distance.   >This reminds me of a strange service call I had when I worked as a Bell System repair technician. It was a rural area and the customer complained that none of her phones would ring, but that she knew somebody was calling whenever her dog howled. Sounded crazy to me, but it turns out that she was on a party line which requires a good earth ground on the third (yellow) wire for the ringers. Well, the unlucky dog was chained to a poorly grounded water pipe which also held the ground clamp and wire for the telephone protector. Whenever she got a call the poor dog got a 90VAC jolt! That's one of the reasons the telcos quit grounding to water pipes in favor of the electrical power neutral. Years ago I lived in a neighborhood with ground water problems. The developement had been built on a wetland. After the lots were graded many homes, mine included, only had about 6 inches of soil sitting on hardpan. The development ran downhill so the lots and streets were stepped. Anyway, one day my phone service got really noisy and later that day I was out in the front yard and noticed water coming out from under the cover of the pedestal mounted phone box. I called the phone company and was told that phones don't use water and so there couldn't be water coming out of the box. I insisted on a service call and was told I'd be billed if it wasn't the phone box spurting water. When the guy came out to fix the problem he was flabbergasted. He had never seen anything like it. The temporary solution was to remove a cover on the pedestal so the water poured out before the box. Later that year all the phone lines on my street were re-done and a new box installed up the street. Eric

jurb6006@gmail.com: Oct 31 11:27AM -0700 >"Of >course, a fool like you would think that a worker being killed by a >spark around a gas leak is funny. "   WTF is wrong with you ? I am certainly not the fool here. That joke about the dog barking is a JOKE.   Lemme splain it to you, telco wires are not grounded, they are a pair. IF, and this is a pretty good sized IF, one of them became grounded at all there would be a shitload of noise on the line, probably to the point of making it unusable.   IT IS FICTION. And thanx for trying unsuccessfully to bust my balls. It makes me look good.   Now about the selling of daughters, that wasn't me. You should know who that was, it is in the Bible.   So you think they grounded a telephone line with a short in it to a dog chain ? And I am a fool ?   I'll tell you what, I think that anyone who EVER EVEN THOUGHT of joining the military should not be allowed to run for any office. Military people should never have domain over private Citizens. You sold your ass into slavery to the oil companies, I don't want you selling ours. (any more that is)   Hurry up and find another name to call me. It'll make you feel better. EVER.

"Michael A. Terrell" <mike.terrell@earthlink.net>: Oct 31 02:40PM -0400 > I'll tell you what, I think that anyone who EVER EVEN THOUGHT of joining the military should not be allowed to run for any office. Military people should never have domain over private Citizens. You sold your ass into slavery to the oil companies, I don't want you selling ours. (any more that is)   > Hurry up and find another name to call me. It'll make you feel better. > EVER.     Yawn. The Central office grounds the positive side of their battery bank, and in the early days some phones lines were run with existing fence wire. They run a pair of wires to ensure a better return path to the C.O. or where the line is multiplexed onto a copper pair or fiber optic. The reason for protecting both wires at the network interface is to divert induced current from lightning strikes to ground at that end rather than let it flow back to the other end.   -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.

jurb6006@gmail.com: Oct 31 11:40AM -0700 >"But all >earthing electrodes are required to be bonded together into one system. >That includes any lightning rod system. "'   It may or may not have been in that case, I was never at the site. I did not wire the place. Thing is, with a large place there can be a ground gradient and even if bonded together like in the basement, there can still be a potential difference. I do not know the size of the place, the grounds may have been tied together, say with 12 guage wire, but it was so long it allowed a little bit of voltage drop. Video is generally 1 volt P-P. That means 100mV is 10 IRE, certainly noticable. Half that would be noticable. Double it and you are getting close to interfering with sync.   All I know is the isolator worked. I did not wiring on the place at all so it is not my problem. Whatever the situation, the guy is an electrician but that does not mean he wored the place. He could have bought it that way.

jurb6006@gmail.com: Oct 31 11:43AM -0700 >"The Central office grounds the positive side of their battery >bank, "   Which means jack shit a couple of miles away.

"Michael A. Terrell" <mike.terrell@earthlink.net>: Oct 31 03:05PM -0400 bud-- wrote: > electrical inspector recommended electricians not make the ground > connection, then they will not be involved in the lawsuit. I would not > use CSST.)     Yes, I meant ground. I am in so much pain that I wake up screaming, so I don't get much sleep anymore. I don't spot some mistakes before I hit send. :(   Try to find metal water pipes in most of Florida. Mine stops at the tank on the well. That is over 100 feet from where the phone or CATV drops are.     -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.

"Michael A. Terrell" <mike.terrell@earthlink.net>: Oct 31 03:16PM -0400 bud-- wrote:   > What is the signal voltage on cable?     I don't know about all CATV systems, but the one I did some design work on was based on +10 dBmv at the street to all for up to four sets per drop. +10 dBmv = 3.1623 mV.     -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.

"Michael A. Terrell" <mike.terrell@earthlink.net>: Oct 31 03:25PM -0400 > >"The Central office grounds the positive side of their battery > >bank, "   > Which means jack shit a couple of miles away.     Sigh. Why don't you sober up, and grow up?     -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.

bud-- <null@void.com>: Oct 31 03:35PM -0600 On 10/31/2014 1:05 PM, Michael A. Terrell wrote:   > Yes, I meant ground. I am in so much pain that I wake up screaming, > so I don't get much sleep anymore. I don't spot some mistakes before I > hit send. :(   "Neural" was actually jurb, not you.

bud-- <null@void.com>: Oct 31 03:37PM -0600 On 10/31/2014 1:16 PM, Michael A. Terrell wrote:   > I don't know about all CATV systems, but the one I did some design > work on was based on +10 dBmv at the street to all for up to four sets > per drop. +10 dBmv = 3.1623 mV.   Interesting. I would think there would always be a lot more 60Hz noise than that. High pass filter?

"Michael A. Terrell" <mike.terrell@earthlink.net>: Oct 31 05:31PM -0400 bud-- wrote:   > Interesting. > I would think there would always be a lot more 60Hz noise than that. > High pass filter?     The lowest RF is channel t-7, with a 7 MHz video carrier. The RF is transformer coupled, and the amplifiers are line powered. The pole mounted transformers put out a 30 (Mostly obsolete by the '80s) or 60 volts AC modified sinewave from a large CVT. The main trunkline can be up to 30 A. The hum problem in CATV is from power supplies modulating the video as capacitors age. There is no AC on the drop to a home, but it is possible in an apartment building or condo where a line extender is installed in the equipment room.     -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.

Michael Black <et472@ncf.ca>: Oct 31 02:35PM -0400 On Fri, 31 Oct 2014, N_Cook wrote:   > Google-ad income generator? eg NEC uPC1167 FM radio IC of circa 1980, > apparently equivalent to NTE1488, complete with apparent datadsheet with > OCR/translation errors from Japanese original data sheet   There were lots of replacement lines, RCA SK, Motorola HEP, Radio Shack had a small selection, I recall GE did for a while. It was an attempt at providing a universal line, when otherwise getting the part meant dealing with multiple sources. Some were better than others. Radio Shack wsa pretty limited. HEP started out small, and the ICs were mostly Motorola (and they at least aimed it at the "Hobbyist, Experimenter, Professional", so for the first two, "something close" was good enough, and it was more important to be able to get reasonably current ICs in West Podunk, ND than to get it cheap only if you mail ordered. HEP got better with time, but like some of them, the replacements were generally work alikes rather than exact, so the substitution guide would often cross to a similar sort of IC rather than an exact match.   I had various guides, they were useful since it was easier looking up transistor specs and not hving to go through differnet books from different manufacturers. But since the replacement parts were so expensive compared to the original, I couldn't afford the replacement line parts.   ECG and then NTE came later, and offered a higher level of replacement. They were less about workalikes than exact replacements. Each were a much mroe extensive line, which meant a store that stocked them had to carry more items, but at least they all came from the same source. Or I suppose if they didnt' carry it, they could get the item from the distributor fast, and still avoid having to deal with multiple distributors.If you looked up a part in the ECG or NTE guide (that eventually became one and the same), you were getting either the part, or very close to it. Earlier replacement lines would expect you to live with a generally the same type of transistor (though at least those were prime components if you were buying from Motorola), so a lot of devices would cross to the same replacement part. ECG and NTE seemed to try to be a lot closer match, hence the much larger replacement line.   Michael

"Michael A. Terrell" <mike.terrell@earthlink.net>: Oct 31 02:31PM -0400 N_Cook wrote:   > > Dan   > So whatever the NTE or CGE label says, the underlying IC would be > original Sanyo/NEC/Harris or whatever of the 1980s or even 1970s?     Not CGE, it was Sylvania's Electronic Components Group. RCA was the first supplier of universal replacements in the '60s, when it could take six months or longer to get an original transistor or diode. GE followed, with some of the worst crap ever sold to a service tech. Workman and ECG followed. NuTone Electronics copied the ECG numbering system. before ECG was sold to Philips. NTE bout the remains of ECG when Philips left the market. The reason for the pricing is because a distributor had to sit on a lot of slow moving inventory. In the '60s & '70s you could pay the price, or lose a customer by having to wait too long.   BTW, the original RCA cross reference was printed on a fold out the same size as their retail tube price list so you could carry it in a shirt pocket.     -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge.

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