- Wireless Cuts Out - Interference ? - 6 Updates
- Equivalency Search Tool - 9 Updates
- Selectivity vs. sensitivity - 1 Update
| jurb6006@gmail.com: Jun 14 03:26PM -0700 Every once in a while it disconnects. When I go to "Connect to" it can't find any networks. This last time I unplugged the MODEM or whatever you call it to see if it was putting out some interference and Windows could still not find any networks. Later it found some neighbors' wireless and displayed it though I can't connect because I don't have the password/key. Plug this one back in and after it reboots it connects again and all is well. I have already changed the wireless board in this PC, a Gateway laptop. I had 4 of them so I got parts. One got broke, one got stole and one got whatever. With a different wireless board it still happens. My sister lives upstairs and her wireless reception is unreliable so she usually plugs in the RJ45 connector. I can't use any information from her because my connection down here is usually solid. the way I see it, there is probably a strong source of interference. It seems the only logical explanation. My OS is tweaked well and normally it runs fine but this happens practically at random, but I think I can say it is during the day, not night. Time before last I ran real quick down in the basement where the connection is wired and it was fine. If the MODEM had shut down or something it would not be, and that does not explain why this SECOND wireless board can't pick up anything when that happens. I doubt it is Windows going onto some mode or updating because this is not 10, it is Vista. I don't feel like being an unwitting beta tester and all updates are turned off. It doesn't even look for them. So it ain't that. So, while I can find out what frequencies these things run on easily, what I CAN'T find out is whatever else might run on the same frequencies. Intermittently. I remember a wireless security camera years ago. It was a good deal except for one thing - whenever it was on you couldn't talk on any cordless phone in the house. I think this is something like that, some sort of thing people use that uses the same band as wireless internet. What ? |
| Jeff Liebermann <jeffl@cruzio.com>: Jun 14 04:27PM -0700 >Every once in a while it disconnects. It would be helpful to know the maker and model number of the wireless router or "gateway". Some of them are notorious for being unable to maintain and reliable connection. >When I go to "Connect to" it can't find any networks. Oh-oh, that's bad. Kinda sounds like your unspecified model Gateway laptop has a problem either in the hardware, wireless drivers, or in the operating system. I can't tell from here. Vista is a PITA mostly because Microsoft and vendors are unwilling to fix their drivers because of the small user base. <https://netmarketshare.com/operating-system-market-share.aspx?id=platformsDesktopVersions> Vista is showing 0.40% or platforms in use. >This last time I unplugged the MODEM or whatever you call it to >see if it was putting out some interference and Windows could >still not find any networks. Not finding any networks is not caused by interference. Transmitters are not on continuously. There are guard times between packets, where broadcasts can be heard by even the most obnoxious wi-fi interference generators. >Later it found some neighbors' wireless and displayed it though >I can't connect because I don't have the password/key. How much later? Did you reboot before it found the neighbors? Do you have another wireless client device other than the Gateway laptop? I suspect that it might not be very sensitive and is having trouble hearing anything. Maybe the U.FL antenna connectors fell off the wireless card? If the other device sees multiple SSID's with good strong signals, while the Gateway hardly sees anything, then there's a problem with the Gateway. Customer arriving with checkbook in hand. Later... -- 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 |
| bruce2bowser@gmail.com: Jun 15 01:55AM -0700 > Every once in a while it disconnects. When I go to "Connect to" it can't find any > networks. That reminds me. I heard a couple of people talking about about making a paper cube and covering it with aluminum foil and putting it near the router. I never tried it, though. |
| jurb6006@gmail.com: Jun 15 08:09AM -0700 >"It would be helpful to know the maker and model number of the wireless router or "gateway". Some of them are notorious for being unable to maintain and reliable connection. " Pace 4111n >"Oh-oh, that's bad. Kinda sounds like your unspecified model Gateway laptop has a problem either in the hardware, wireless drivers, or in the operating system. I can't tell from here. " P-6318u >"Not finding any networks is not caused by interference." Well I changed the wifi board and it did no good. Data from upstairs is probably no good because of the layout. Where she sits the antenna plates (if they're behind the screen like these) would be just about parallel to the signal from the router. I doubt they pick up well like that. She gave up and ran a 100 foot CAT-5 up there a long time ago, and that's with a completely different router. That was a 2wire 2701hg. Though not for her, that one seemed to connect for me just fine. It was replaced due to losing the DSL itself. It is on a completely separate phone line shared only with one FAX machine and filters are properly installed all over the place. We called, they sent the Pace and didn't even want the 2wire back. >"How much later? Did you reboot before it found the neighbors? " The outages are about 5 - 10 minutes usually. When it starts picking up again that happens all by itself, I don't even have to close and reopen the browser(s). The only time I reboot the browser is when FF can't connect and Chrome will. That is due to security issues with the older version (23) I use and prefer. That is likely a security issue, I have tried to tell it to use a higher TLS mode but got tired of trying to figure it out. At one time Chrome had no bookmarks, it was all "Paste and go"ed. At any rate, that is a separate issue and only happens on certain sites. Then the router throws up the wrong error, about filters. Well nothing changed. I almost never reboot. But bottom line is it fixes itself with no intervention at all. That's why I thought it a hardware problem, something thermally intermittent. But 2 with thew same problem ? And drivers don't go thermally intermittent. In fact I have found once they're toast that's it and they need to be reloaded. But it wasn't the wireless board either so I don't know what to do except maybe go back to a CAT cable. >"Do you have another wireless client device other than the Gateway laptop? " Not that I can get to at the right time usually. Plus that one does not connect reliably to this wireless. I have a Gateway WGU-210 but IO never got that to work right. I also have a Linksys PCMCIA card but I have no slot for it. There is an older laptop in the basement but I just put the wrong version of Ubuntu on it - too new. It seems to see the Linksys but is so slow everything times out. Maybe I'll put XP back on it, that's what it originally came with. I think it amazing that anything would run XP better than Linux ever, but it seems so. I guess I'll have to give that old laptop another shot. Load it and see if I can get that wireless working just so I know. I know it is inconceivable that all these wirelesses in the hood go dead at the same time. But what in software could go wrong and fix itself in a few minutes without even reopening the browser ? All I have to do it hit refresh and there it is. >"Customer arriving with checkbook in hand. Later..." Money ? And here I thought you were living on pine cones like Yule Gibbons. |
| jurb6006@gmail.com: Jun 15 08:11AM -0700 > > Every once in a while it disconnects. When I go to "Connect to" it can't find any > > networks. > That reminds me. I heard a couple of people talking about about making a paper cube and covering it with aluminum foil and putting it near the router. I never tried it, though. Hmmm, maybe some sort of reflector would help the reception upstairs... |
| jurb6006@gmail.com: Jun 15 08:22AM -0700 >"I suspect that it might not be very sensitive and is having trouble hearing anything. Maybe the U.FL antenna connectors fell off the wireless card?" When it works I get 5 bars out of 5 on the signal level. It calls it "Excellent". Also, I had this thing out on the highway one time and it picked up all kinds of signals. Just so happens the thing is right in front of me and has the covers off. The little black and white wires are connected. >"Vista is a PITA mostly..." Stop right there. I know. Stupid thing can't even view a GIF. It opens IE to do it ! And I tried, the picture and FAX viewer cannot handle GIFs. It does in XP, and you can zoom them and really see them. But Vista is so much better it can't do that. I almost upgraded this to XP when I first got it, had the drivers and everything downloaded but never got around to it. If I could find a really good comprehensive security package for XP I would run it until I drop dead. And when I installed a second HD in it the DVD disappeared. That might be the mobo though. I guess I could boot off a live stick of Linux and see what it picks up. |
| "pfjw@aol.com" <peterwieck33@gmail.com>: Jun 14 12:58PM -0700 All: If some of you, like me, are forever messing about with vintage/obsolete solid-state equipment, here is a handy website to find out equivalencies for obsolete semi-conductors, that also includes my latest search. Put in what you have on top, and it spits out equivalencies below. https://alltransistors.com/crsearch.php?mat=Si&struct=NPN&pc=200&ucb=120&uce=120&ueb=7&ic=20&tj=200&ft=1&cc=500&hfe=20&caps=TO3 I am sure most of you have this tool already, or something similar, but for the one-or-two otherwise, there it is. Peter Wieck Melrose Park, PA |
| tabbypurr@gmail.com: Jun 14 01:57PM -0700 > I am sure most of you have this tool already, or something similar, but for the one-or-two otherwise, there it is. > Peter Wieck > Melrose Park, PA I tried searching for geraniums just to see if it worked ok, and a couple of surprises turned up: 2N671 Veb 40v 2N675 Veb 70v T1393 Veb 40v T1656 Veb 70v NTE105 fT 0.1MHz NT |
| jurb6006@gmail.com: Jun 14 03:58PM -0700 I generally seek out the actual spec sheet on what I need to replace. I have seen NTE, ECG and SK books to be wrong. I consider many things when choosing a replacement. If it is a switcher then I look at the turnoff time mainly if it runs into an inductive load. If it is analog I look at a few other things. It seems like some of these "resources" do noyt consider all the parameters. They for example had a replacement for an RCA 164589 diode which is a high speed rectifier. I told the boss "This is not going to work", he ordered me to put it in anyway and it lasted less than a minute. That was straight out of the ECG book, and NTE is a cheap knockoff on ECG. It is Nutone, ECG was Sylvania, SK is/was RCA. The only way I'll take the word of a cross reference guide is if I got the JEDEC or JANTX numbers for the parts and can see the whole datasheet. those engineers don't waste money on a transistor when they could have used the old dime a dozen 2N3055. They get paid to save money, not to spend it. So when you see a transistor that only has 50 volts across it and passes 2 amps, that doesn't mean that any transistor will work if it meets those specs. For example, in a Zenith TV many years ago it had a funny looking picture. I found that in the IF module someone had replaced a video amp transistor with an RF power transistor. "WOW, this one'll do 50 MHZ, it must work !". Yeah, it worked but the picture looked like a cartoon because it was not linear in its gain. It was designed for use in a class C RF power output or driver circuit, not a linear amp. Anyway, I trust nobody when it comes to replacements. If that thing breaks again it comes back on ME, and since the world is not really all that tolerant of my mistakes, I will do unto others. Here's a project to test out this cross reference : change the outputs and drivers in a Marantz 1152DC. There's a test because you have to consider the Vbe before a transistor turns on and the Vcesat of the predrivers. The bias is not adjustable. Who do you want picking your replacements then ? At any time you can make a post here about a replacement and I will probably respond. Take advantage of that before something or someone kills me. |
| jurb6006@gmail.com: Jun 14 04:00PM -0700 >"I tried searching for geraniums just to see if it worked ok, and a couple of surprises turned up: 2N671 Veb 40v 2N675 Veb 70v T1393 Veb 40v T1656 Veb 70v " Really ? Seventy frikken volts ? That is phenomenal. What can I do with that ? (probably nothing but it's nice to know) |
| Jeff Liebermann <jeffl@cruzio.com>: Jun 14 04:05PM -0700 >> Peter Wieck >> Melrose Park, PA >I tried searching for geraniums just to see if it worked ok, and a couple of surprises turned up: Well, it is spring time. Who knows what might spring up whe you plant and water the geraniums. <https://en.wikipedia.org/wiki/Geranium> -- 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 |
| tabbypurr@gmail.com: Jun 14 04:23PM -0700 On Friday, 15 June 2018 00:05:11 UTC+1, Jeff Liebermann wrote: > >I tried searching for geraniums just to see if it worked ok, and a couple of surprises turned up: > Well, it is spring time. Who knows what might spring up whe you plant > and water the geraniums. hopefully the result will be a gain. At least if you overcome your resistance to do it. Just don't plant them in a silly cone shape. NT |
| Jeff Liebermann <jeffl@cruzio.com>: Jun 14 05:08PM -0700 >hopefully the result will be a gain. At least if you overcome your >resistance to do it. Just don't plant them in a silly cone shape. >NT No gain. I planted the germaniums according to the instructions, with the three roots pointing downward. I then watered them but they wouldn't grow or gain biomass. I'll try another batch, hopefully with less leakage so the water doesn't leak out of the planter box. Is "solid state" the same as "ossified" where everything looks and acts like a rock? -- 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 |
| tabbypurr@gmail.com: Jun 14 10:26PM -0700 On Friday, 15 June 2018 01:09:08 UTC+1, Jeff Liebermann wrote: > >NT > No gain. I planted the germaniums according to the instructions, with > the three roots pointing downward. the roots act as collector & base. The emitter is the top. > less leakage so the water doesn't leak out of the planter box. > Is "solid state" the same as "ossified" where everything looks and > acts like a rock? geraniums are a form of wet solid state. But they also love growing in a glass belljar, occupying a vacuum where no other plant is present. NT |
| "pfjw@aol.com" <peterwieck33@gmail.com>: Jun 15 05:11AM -0700 The tool allows the user to put in the parameters, and then returns part numbers that meet those parameters. Meaning: It's a start. I have quite a number of things that use parts, including transistors, no longer in production, and with part-numbers that have no listed equivalents. So, I can take the data sheet from the obsolete parts, insert the parameters into the tool and get a list of other part numbers that meet those parameters. And, then, maybe, I, can, find, a, part, to, try. And, maybe I then do not have to go to eBay looking for a Chinese knock-off that *might* work. Or not. Peter Wieck Melrose Park, PA |
| Jeff Liebermann <jeffl@cruzio.com>: Jun 14 04:01PM -0700 On Fri, 08 Jun 2018 13:56:49 -0500, Jon Elson <elson@pico-systems.com> wrote: >> (c-span)90.1, from DC. >If you are really IN Baltimore, there's no way you can get DC stations on >a car radio. I beg to differ. WAMU and KCSP both considers Baltimore within their coverage area: <https://radio-locator.com/cgi-bin/patg?id=WAMU-FM> <https://radio-locator.com/cgi-bin/patg?id=WCSP-FM> It should be possible to hear both in Baltimore with a decent car antenna and receiver. -- 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 |
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