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bruce2bowser@gmail.com: Nov 22 08:06PM -0800 Jasen Betts wrote:   >> Some usb leads for chargers only run the +5 and Gnd - so they can't be >> used on PC's etc   >They can (but probably should not) be used for charing   You mean 'sharing'? or 'charging'?   >from PCs, but >cannot be used for data   If you meant to say 'sharing' and not 'charging' then yes, you can use this for a hard-wire data link. There are adapters for this too, I believe.

oldschool@tubes.com: Nov 22 07:14PM -0600 >>> Melrose Park, PA   >> So--- the complete legend in your own mind then ?? >Me too!!!!!   Sounds to me like Peter needs to sign himself into an alcohol detox treatment hospital.   This is the kind of blabber one normally hears from someone sitting on a barstool.

rickman <gnuarm@gmail.com>: Nov 22 10:42PM -0500 > treatment hospital.   > This is the kind of blabber one normally hears from someone sitting on a > barstool.   Obviously you know this because of all the time you have spent sitting on a barstool?   --   Rick C   Viewed the eclipse at Wintercrest Farms, on the centerline of totality since 1998

Jeff Liebermann <jeffl@cruzio.com>: Nov 22 09:32AM -0800 On Wed, 22 Nov 2017 05:40:42 +0000 (UTC), harry newton   >At this point, I see no evidence (yet anyway) of firebase services on my >Android 4.3 phone. Do you?   I dunno and don't have the time to check. Since it's probably buried the application code, I doubt if I'll find anything.   However, all this begs another question. Assuming that Wi-Fi is also turned off in Airplane mode, what the hell is Google doing TRANSMITTING anything? Unless its buffered, to use the phone for location tracking would require transmitting the tower ID's when they are heard. I would think that the airline companies would take a dim view of this as Google's transmitting anything in an commercial airliner in flight could interfere with aircraft navigation, which is the purpose of having the Airplane mode. If some airliner falls out of the sky due to a navigation error, Google's tracking trickery could easily be deemed responsible.   Incidentally, there's quite a bit more information available that could be used for location tracking than just the tower ID. The big one is the propagation delay (ping time) between the handset and the cell tower, which defines a location radius. Two or three such delays would obtain your location quite accurately. However, Google could just as easily transmit the GPS location or the individual satellite delays in order to obtain a location. It's odd that they would transmit only the tower ID's, as there so much more available.   I should probably fire up the spectrum analyzer, turn off the wi-fi, and see if my Samsung S6 is belching anything in Airplane mode. However, tomorrow is the Day of the Turkeys and I have other plans.   Happy Day of the Turkeys.   -- 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

harry newton <harry@is.invalid>: Nov 22 08:00PM He who is Jeff Liebermann said on Wed, 22 Nov 2017 09:32:54 -0800:   > I dunno and don't have the time to check. Since it's probably buried > the application code, I doubt if I'll find anything.   That's understandable. It was reported only yesterday, so, the pundits need to dig deeper for us.   > TRANSMITTING anything? Unless its buffered, to use the phone for > location tracking would require transmitting the tower ID's when they > are heard.   The code, as I understand it, only activates when you're connected to the Internet (via either cellular data or WiFi). Nothing else is required. * no sim card * factory defaults (i.e., no apps) * location services turned off <https://qz.com/1131515/google-collects-android-users-locations-even-when-location-services-are-disabled/>   "Devices with a cellular data or WiFi connection appear to send the data to Google each time they come within range of a new cell tower."   Slate.com also said the information is sent the moment two things happen: 1. You're on the Internet (using WiFi or cellular data) 2. And you're "in range" of a cellular tower <http://www.slate.com/articles/technology/technology/2017/11/how_to_stop_phone_from_tracking_location_android_latest_to_prove_you_should.html>   > the purpose of having the Airplane mode. If some airliner falls out > of the sky due to a navigation error, Google's tracking trickery could > easily be deemed responsible.   I think the transmission only occurs if two things are simultaneous: 1. You're in range of a cell tower, and, 2. You're already on the Internet   If the SIM card is out of the phone, then the only way you'll be on the Internet is with WiFi (or maybe also reverse tethering, I suppose).   > could be used for location tracking than just the tower ID. The big > one is the propagation delay (ping time) between the handset and the > cell tower, which defines a location radius.   This is very interesting, as you always know the details that are juicy.   Where we both live, towers aren't necessarily close, but if, say, for example, I'm staking out those pot farmers in Boulder Creek who were arrested for shooting at suspected pot thieves during that fire a couple of weeks ago, then I don't want ANY information about my proximity to ANY cell tower to be transmitted.   Here's what Google was quoted as having said in the QZ.com article: "In January of this year, we began ... using Cell ID codes as an additional signal to further improve the speed and performance of message delivery"   > Two or three such delays > would obtain your location quite accurately.   This is good information to know. Well, actually, it's bad information to know. But you know what I mean.   > just as easily transmit the GPS location or the individual satellite > delays in order to obtain a location. It's odd that they would > transmit only the tower ID's, as there so much more available.   They *are* getting *more* than the unique cell tower id. 1. MCC 2. MNC 3. CID   Google provided this quote to Gizmodo: "To ensure messages and notifications are received quickly, modern Android phones use a network sync system that requires the use of Mobile Country Codes (MCC) and Mobile Network Codes (MNC). In January of this year, we began ... using Cell ID codes as an additional signal to further improve the speed and performance of message delivery. ... MCC and MNC provide necessary network information for message and notification delivery and are distinctly separate from Location Services..." <https://gizmodo.com/your-android-phone-has-been-sending-location-data-to-go-1820639889>   > I should probably fire up the spectrum analyzer, turn off the wi-fi, > and see if my Samsung S6 is belching anything in Airplane mode.   I think airplane mode might still be working - except on some iOS devices with the older OS's (which some of mine are on).

Char Jackson <none@none.invalid>: Nov 22 02:08PM -0600 On Wed, 22 Nov 2017 09:32:54 -0800, Jeff Liebermann <jeffl@cruzio.com> wrote:   >However, all this begs another question. Assuming that Wi-Fi is also >turned off in Airplane mode, what the hell is Google doing >TRANSMITTING anything? Unless its buffered,   That seems likely, along with timestamps on everything to facilitate correlation.   >the purpose of having the Airplane mode. If some airliner falls out >of the sky due to a navigation error, Google's tracking trickery could >easily be deemed responsible.   Ever since most airlines have started allowing personal wireless devices to remain on throughout commercial flights*, it's probably no longer a big deal.   *Supposedly, not during take-off and landing, while the aircraft is below 10,000 feet, but I travel very frequently for work and I can't remember the last time I noticed anyone complying with that request.   As far as I know, there's no evidence to suggest that personal wireless devices actually interfere with aircraft navigation or operation. The whole thing, from the start, was done out of an abundance of caution, not as a result of any specific test results.

Jeff Liebermann <jeffl@cruzio.com>: Nov 22 03:43PM -0800 On Wed, 22 Nov 2017 09:32:54 -0800, Jeff Liebermann <jeffl@cruzio.com> wrote:   >However, all this begs another question. Assuming that Wi-Fi is also >turned off in Airplane mode, what the hell is Google doing >TRANSMITTING anything?   I've been working too hard and have screwed up. I somehow assumed that it was Airplane Mode that was turned off, not Location Services. They're quite different.   Just ignore me. Maybe a turkey overdose will help.   -- 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

oldschool@tubes.com: Nov 22 07:18PM -0600 On Tue, 21 Nov 2017 22:40:17 +0000 (UTC), harry newton >to Google even if they don+IBk-t have SIM cards installed.   >Android devices never offered consumers a way to opt out of the collection >of cell tower data.   Google is 'NOT' your friend !

Stu jaxon <stankowalski02@gmail.com>: Nov 22 10:50AM -0800 hi group, does anyone know if i can use this= 750 Watt Voltage Converter Transformer Heavy Duty Step Up/Down 750W 110-220V as an isolation transformer, it does have output of 110v, ? thanks,

N_Cook <diverse@tcp.co.uk>: Nov 22 06:52PM On 22/11/2017 18:50, Stu jaxon wrote: > hi group, does anyone know if i can use this= 750 Watt Voltage Converter Transformer Heavy Duty Step Up/Down 750W 110-220V as an isolation transformer, it does have output of 110v, ? thanks,   Does your ohmeter say there is a connection across both sides? ie an autotransformer.

"pfjw@aol.com" <pfjw@aol.com>: Nov 22 11:09AM -0800 On Wednesday, November 22, 2017 at 1:50:46 PM UTC-5, Stu jaxon wrote: > hi group, does anyone know if i can use this= 750 Watt Voltage Converter Transformer Heavy Duty Step Up/Down 750W 110-220V as an isolation transformer, it does have output of 110v, ? thanks,   Most voltage-converter transformers are auto-transformers and do not provide isolation. As Mr. Cook suggests, see if you get continuity from the primary to the secondary.   http://www.electronics-tutorials.ws/transformer/trans28.gif This is an auto-transformer.   Peter Wieck Melrose Park, PA

"J.B. Wood" <arl_123234@hotmail.com>: Nov 22 02:39PM -0500 On 11/22/2017 01:50 PM, Stu jaxon wrote: > hi group, does anyone know if i can use this= 750 Watt Voltage Converter Transformer Heavy Duty Step Up/Down 750W 110-220V as an isolation transformer, it does have output of 110v, ? thanks,   Hello, and do you have a particular make and model number of device in mind? An marketed as an AC isolation transformers usually doesn't provide voltage conversion with input (primary) to output (secondary) energy transfer solely via magnetic coupling. There are also adjustable autotransformers (e.g. the venerable Variac brand) that, for example, takes 120 VAC at input and can provides 0-130 VAC output. The primary and secondaries of these devices aren't conductively isolated (as an ohmmeter test will confirm). There are also devices which combine both isolation and adjustable autotransformer function in one enclosure. Or you can simply take, say, a 120 VAC-to-120 VAC isolation transformer and follow it with an adjustable autotransformer, keeping in mind the maximum AC current/power ratings of the devices. Sincerely,   -- J. B. Wood e-mail: arl_123234@hotmail.com

Stu jaxon <stankowalski02@gmail.com>: Nov 22 12:16PM -0800 On Wednesday, November 22, 2017 at 2:39:09 PM UTC-5, J.B. Wood wrote: > maximum AC current/power ratings of the devices. Sincerely,   > -- > J. B. Wood e-mail: arl_123234@hotmail.com   here's the model Norstar ST-750.. it's on ebay for half price used. so more or less this just a surge protector.?

Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au>: Nov 23 07:41AM +1100 On 23/11/2017 7:16 AM, Stu jaxon wrote:   >> -- >> J. B. Wood e-mail: arl_123234@hotmail.com   > here's the model Norstar ST-750.. it's on ebay for half price used. so more or less this just a surge protector.?   **No. It's a step-down transformer, or autoformer. No way of knowing, unless you can contact the manufacturer, or measure it yourself. I doubt that it is an isolation transformer.   Which begs the question: Why do you need an isolation transformer?   -- Trevor Wilson www.rageaudio.com.au

Stu jaxon <stankowalski02@gmail.com>: Nov 22 12:46PM -0800 On Wednesday, November 22, 2017 at 3:41:45 PM UTC-5, Trevor Wilson wrote:   > -- > Trevor Wilson > www.rageaudio.com.au   to protect my equipment, i picked up a new hobby.

Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au>: Nov 23 09:18AM +1100 On 23/11/2017 7:46 AM, Stu jaxon wrote: >> Trevor Wilson >> www.rageaudio.com.au   > to protect my equipment, i picked up a new hobby.   **An isolation transformer won't protect your equipment. An isolation transformer is used to assist in protecting the operator (though that is far from guaranteed).   Why do you imagine that an isolation transformer will protect your equipment? What sort of equipment? What do you imagine the transformer will protect your equipment from?   -- Trevor Wilson www.rageaudio.com.au

bitrex <bitrex@de.lete.earthlink.net>: Nov 22 12:33PM -0500 > Otherwise, try swapping tubes with another radio. 6A8s are notoriously prone to failure, and glass ones are getting quite scarce. More so than even a 1L6 in my experience.   > Peter Wieck > Melrose Park, PA   Updated voltage measurements, broadcast band, volume control fully on, wallplug voltage 124VAC. All measurements taken ~30 sc   6F6:   Pin 1, enclosure: 0 Pin 2, heater: 3.2 VAC Pin 3, plate: 283 Pin 4, screen grid: 283 Pin 5, control grid: 0.8 Pin 6, NC Pin 7, heater: 3.2 VAC Pin 8, cathode: 18   6J7:   Pin 1, enclosure: 0 Pin 2, heater 3.2VAC Pin 3, plate: 7.7 <------ wut Pin 4, screen grid: 18 Pin 5, suppressor: 1.8 Pin 6, NC Pin 7, heater: 3.2VAC Pin 8, cathode: 1.8   grid, top cap: 1mV   6K7:   Pin 1, enclosure: 0 Pin 2, heater: 3.2VAC Pin 3, plate: 284 Pin 4, screen: 127 Pin 5, suppressor: 3.5 Pin 6, NC Pin 7, heater: 3.2Vac Pin 8, cathode: 3.5   grid, top cap: 1mV   6A8:   Pin 1, enclosure: 0 Pin 2, heater: 3.2VAC Pin 3, plate: 267 Pin 4, screen: 100 Pin 5, grid 1: -10 Pin 6, grid 2: 235 Pin 7, heater: 3.2VAC Pin 8, cathode: 4.3   grid, top cap: 2mV

bitrex <bitrex@de.lete.earthlink.net>: Nov 22 12:33PM -0500 On 11/22/2017 12:33 PM, bitrex wrote:   > Updated voltage measurements, broadcast band, volume control fully on, > wallplug voltage 124VAC. All measurements taken ~30 sc   30 seconds after power on, rather

"pfjw@aol.com" <pfjw@aol.com>: Nov 22 10:04AM -0800 You are getting 6.4V across the filament - which makes sense at 124V at the wallplate.   I expect that your transformer is good. I expect that the elevated B+ is due, in part, to excess capacitance. 6 - 8 uf may not seem like much from 30,000 feet, but it is a 33% increase at ground level. And 6 - 10 uF is a 67% increase at ground level. And, of course, an 11+% increase in wallplate voltage will contribute significantly.   Do you have any replacement tubes in your inventory?   If not, contact me off-group. I probably have dozens in that line-up and I could send you some proven-good for testing. Also, can you do an alignment?   Peter Wieck Melrose Park, PA

bitrex <bitrex@de.lete.earthlink.net>: Nov 22 04:02PM -0500 > You are getting 6.4V across the filament - which makes sense at 124V at the wallplate.   > I expect that your transformer is good. > I expect that the elevated B+ is due, in part, to excess capacitance. 6 - 8 uf may not seem like much from 30,000 feet, but it is a 33% increase at ground level. And 6 - 10 uF is a 67% increase at ground level. And, of course, an 11+% increase in wallplate voltage will contribute significantly.   Right, that makes sense, but what about the low plate voltage on the 6J7? There's a small RC network there, I don't think I checked all those for tolerance. I should do that.     > If not, contact me off-group. I probably have dozens in that line-up and I could send you some proven-good for testing. Also, can you do an alignment?   > Peter Wieck > Melrose Park, PA   That'd be great, I can contribute a nominal fee if you like because I'm definitely not thrilled with the prices I'm seeing on even used variants at the usual outlets! Yeah, I have an RF signal gen available to do an alignment, though I've only read about the procedure and never actually done it in practice, doesn't seem too intimidating.

dansabrservices@yahoo.com: Nov 22 08:56AM -0800 IRRC these units have a 1 Farad capacitor that provides the retainer voltage. This should be about 1/2 round and about 1/4" high. Replace this cap and all should be well again.   Dan

dplatt@coop.radagast.org (Dave Platt): Nov 22 10:52AM -0800 >I have this receiver and when I lose power, great power company, the station pre-sets are lost and the >stations need to be entered again. The manual states that they are retained for up to a month. Is there >a battery to replace?   Looking at the schematic and parts list (available for free on HiFiEngine.com once you've registered) it looks to me as if the memory backup is via C214, a .22F (or 220,000 uF) "double layer" 5.5-volt capacitor. This is located on the display board, between the fluorescent display and the TV/LD indicator LED.   These double-layer caps serve as a sort of battery (although they work differently inside). If it's gotten "leaky" the charge would drain away and the main IC would lose its standby power and lose its memory.   It can probably be replaced, but the chances are that this would require desoldering and/or clipping of the old cap's leads, and soldering in of a new double-layer cap of this sort. I doubt it's in a socket or battery holder.   This should be done by someone with experience in this sort of repair, to avoid damaging the display board, other components, or the technician :-)

Peter Easthope <petereasthope@gmail.com>: Nov 22 09:59AM -0800 Hi,   I want to id the 7 power transistors in an IEC centrifuge. Three of them visible here. http://easthope.ca/CentrifugePowerTransistors.jpg   Each small increment on the scale is 1 mm. The plastic case is about 15 mm wide by 20 mm high. Usually the metal cooling plate on the back of a transistor would project above the plastic. Not so here. About half the black plastic case is beneath the p.c.b. in this photo. The grey material in the photo appears to be a silicone impregnated cloth for heat transfer. The black panel above is an aluminum cooling fin and folds under the transistors.   I failed to find a match with the transistors listed here. http://www.siliconfareast.com/to-types.htm   Ideas? Thanks, ... Peter E.

"pfjw@aol.com" <pfjw@aol.com>: Nov 22 10:13AM -0800 TO-247 case.     https://www.vishay.com/docs/95223/to247.pdf   Peter Wieck Melrose Park, PA

Peter Easthope <petereasthope@gmail.com>: Nov 22 10:50AM -0800 > TO-247 case.   > https://www.vishay.com/docs/95223/to247.pdf   Thanks! According to http://www.interfacebus.com/semiconductor-transistor-packages-TO-247.html , the TO-247 case is used for BJT, FET and SCR. A good start to understanding the control of the centrifuge.   Thanks again, ... Peter E.

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