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oldschool@tubes.com: Feb 19 04:59PM -0600 On Sat, 18 Feb 2017 15:44:08 -0500, Ralph Mowery   >There are some units that connect by USB to a computer for about $ 60 >that you may want to look at.   Geez, I never knew they made such a thing.   Could you post a URL or two for them. I am not sure how to google for this sort of thing.

Foxs Mercantile <jdangus@att.net>: Feb 19 05:20PM -0600 > Geez, I never knew they made such a thing.   > Could you post a URL or two for them.   <http://www.ebay.com/itm/330731251939>   -- Jeff-1.0 wa6fwi http://www.foxsmercantile.com

Ralph Mowery <rmowery28146@earthlink.net>: Feb 19 08:01PM -0500 In article <no8kacdfgvm17a2jk7q08ho928h5o051q3@4ax.com>, oldschool@tubes.com says...   > Geez, I never knew they made such a thing.   > Could you post a URL or two for them. I am not sure how to google for > this sort of thing.   Get on Ebay and look around. YOu can often get them direct from China. I have ordered many things from there and it usually takes about 2 to 3 weeks to get here.   Hantek is a good brand. I have one of the 200 MHz scopes I bought from a US suplier for $ 299 including shipping.That was a new full scope inckuding the probes.     http://www.ebay.com/itm/Hantek-6022BE-PC-Based-USB-Digital-Storag- Oscilloscope-48MSa-s-20MHz-2-Channels/272515225036? _trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED% 26ao%3D1%26asc%3D41376%26meid%3D1df41ef25c634e13aecc63dfc5fc32a9%26pid% 3D100033%26rk%3D3%26rkt%3D8%26sd%3D330731251939   Here is a US suplier that I have ordered other things from. There is a short video on a similar one.   https://www.circuitspecialists.com/usb-oscilloscope-hantek6082be.html

oldschool@tubes.com: Feb 19 01:32PM -0600 This is slightly off topic....   I live on a farm, and have a main disconnect switch on the meter pole, rated at 400A. That feeds 3 buildings (house, garage, and barn) each has 100A main breakers. It also feeds an old 60A fuse panel in a shed. (yea, that is still fuses but all it does in run a few lights, so I never changed it).   This is mostly just my home, but I do a little "hobby farming". So my electrical needs are small. But this was once a large working farm with large power users, such as huge 240V motors that ran grain dryers on grain bins.   Anyhow, the pole transformer has been there for ages, and I just noticed that it's rated at 15KVA. 15KVA is only 62.5 Amps at 240V. (Or 125A at 120V).   Why would the power company install a transformer so under rated? -OR- Do they rate those transformers in a different manner? Like I said, it works for my needs, but in winter, I run several livestock tank heaters and I tell when they kick on by a very slight momentary (slight) dimming of my lights. (They are rated at either 500W or 1000W, but there are 9 of them).   From what I am seeing, those transformers are all under rated. A friends house has 200A service and his transformer is only 8KVA.

"pfjw@aol.com" <pfjw@aol.com>: Feb 19 01:48PM -0800 What is coming into that transformer is typically 2,300V, and the rating is on the primary side. Meaning that if it is converting from 2,300V to 240V, for round figures and with losses thrown in, you are getting about 8 x the amps at the low end.   If watts is watts, again to be crude, 1 A @ 2,300 V = 10 A @ 230V v, each giving 2,300 watts. Now as there are two legs in the single-phase service, *EACH ONE* carries the nameplate rating. If that service is 3-phase, then you are getting even more.   Not to worry, those transformers are fused always on the primary, side, often on the secondary side. You may not see the secondary fuses, but you will see the primaries. No utility wants a fire on a pole, and certainly not at a remote location.   One more thing - we have a 200A service at our main house and at our summer house - the service was sized for electric heat, which we have never installed. At our main house, in the hottest part of the summer, we have never pulled even 150 A, (with 2 x 200 A available). That is with AC, a hot-tub, two refrigerators, freezer and a car charger. Our summer house - not even 60 A. No AC, but a hot tub, refrigerator, and car charger.   Does that help?   Peter Wieck Melrose Park, PA

oldschool@tubes.com: Feb 19 04:55PM -0600 On Sun, 19 Feb 2017 13:48:55 -0800 (PST), "pfjw@aol.com" <pfjw@aol.com> wrote:   >If watts is watts, again to be crude, 1 A @ 2,300 V = 10 A @ 230V v,   [Quoting removed because of line lengths]   Yes, that makes sense. I was thinking the output was the amp rating.   Since you mentioned the fuses, I am aware of them on the input. In fact years ago, I had one of them blow during a storm. A shower of sparks was seen. The power company replaced it and all was fine again.   I do question how much they are fused to match the loads though. Some years ago, I was at a yearly community meal at the small town's reception center. I think every woman in town brought their electric roasters, which use about 12 amps each. I counted 26 roasters, plus a few large elec coffee pots. The building this was in, was fairly new, with adaquate wiring. However, it was a very hot day. There is a trailer park across the road, and I bet half them trailers had their air conditioners on. That trailer park is to the same pole transformer. So, add it up. 26 roasters = 312A. 3 coffee pots at around 10A each, plus lighting, and that meal was drawing around 350A.   Who knows what the trailer park was drawing, and the meal center's AC may have been on too.   Then the power went out. We had to eat cool food by candle light, until the town's fire dept came with some generators for lighting.   The power company came, and they went up on the pole. The guy burned his hand on that transformer. That thing was so hot they could not do anything with it till it cooled. It was rated at 25 KVA. Hours later they finally were able to replace it, and put in a 37.5 KVA. That transformer fried before the fuse blew !   If that transformer had been touching the wooden post, I bet there would have been a fire, but it was on brackets that held it away from the wood. Even a few hours later, when they brought in a crane with a steel cable to lower it to the ground, the guys said it was too hot to touch and they could not load it on their truck. One of the guys suggested hosing it with cold water, but I left before they did that.

Rheilly Phoull <rheilly@bigslong.com>: Feb 20 08:52AM +0800 > cable to lower it to the ground, the guys said it was too hot to touch > and they could not load it on their truck. One of the guys suggested > hosing it with cold water, but I left before they did that.   AFAIK the fuses are to protect the tranny not the load.

Stijn De Jong <stijndekonlng@nlnet.nl>: Feb 19 05:18PM On Sat, 18 Feb 2017 20:14:28 -0800, Jeff Liebermann wrote:     > Nice app, but it does NOT show the lat-long of the local Verizon cell > site. See attached screen grab: > <http://802.11junk.com/jeffl/crud/CellTracker.jpg>   Thanks Jeff for installing that app, which isn't on F-Droid or Google Play, so we both took a risk in doing so (I'm not sure how to ameliorate that risk, but that's the topic of a different Android thread).   I've only used that MIT CellTracker for a day, so take everything below with a grain of salt but look at this screenshot first: http://i.cubeupload.com/407ihh.jpg   That MIT CellTracker app does appear to list two GPS locations: 1. Where you are 2. Where the connected tower is   That first GPS location it probably gets from our GPS receivers, while the second GPS (which it calls "NMAP") location is likely from a lookup database.   > Lat-Long" is the location of my house, not the local cell site. I > don't know where my Lat-Long came from (probably Google Maps > database).   Sometimes it says "NMAP NOT FOUND" as your photo shows, but other times it says "NMAP" and then the GPS location and height of the tower in meters.   What I don't like about this MIT CellTracker is that it reports signal strength in ASU and not in Decibels (yes, I know, it can be converted).   However, what I like about this MIT CellTracker non-Google-Play app is I can see, visually, the documented cell towers bouncing around, even when I use my signal booster micro tower.   Here's an edited example of what a user might see of that bouncing: http://i.cubeupload.com/ZHepme.jpg   > Celltracker for Android 5.0 on a Moto G v1 phone running Android 5.1. I'm on Android 4.3 Samsung Galaxy S3, T-Mobile, in the boonies near you.   After two days, I've whittled down the good freeware to 4 applications: http://i.cubeupload.com/OwXjWZ.jpg

sms <scharf.steven@geemail.com>: Feb 19 09:33AM -0800 On 2/17/2017 8:36 PM, Savageduck wrote:   >> out for us. I called the caretaker who brought over the key.   > Was this at Fish Camp, and I guess at some place other than Tenaya Lodge > or the Narrow Gauge Inn?   Yosemite West.   I looked at the maps for all four carriers for that area. Only Verizon has coverage there. Remember, this area used to be served by a local carrier, Golden State Cellular, which did a very good job of covering remote areas. Verizon bought them. T-Mobile has no coverage in Yosemite, not even in Yosemite Valley, and does not allow roaming. Sprint roams onto Verizon. AT&T has native coverage in Yosemite Valley. Oddly, the AT&T map shows two small patches of coverage.   Yosemite West is technically just outside the park boundary but the only access is from within the park. There are a lot of rental houses and condominiums in that community so it's a popular area for lodging, especially in the winter since it's much closer to the downhill ski area and the majority of XC and snowshoe trails, than Yosemite Valley, Wawona, or Fish Camp.   Throughout California, once you leave the urban and suburban areas, you definitely want to have at least an AT&T phone, and preferably a Verizon phone. Ditto for Oregon. We were up in Bend and out in the area west of town at Tumalo Falls, and there was only Verizon coverage (probably also U.S. Cellular coverage). T-Mobile coverage is very spotty. Part of the problem of course is the PCS frequencies need a lot more towers to cover the same area as the cellular frequencies. Another advantage of Verizon is that their using CDMA which is more robust and has greater range.

Jeff Liebermann <jeffl@cruzio.com>: Feb 19 09:41AM -0800 On Sun, 19 Feb 2017 17:18:40 +0000 (UTC), Stijn De Jong   >That first GPS location it probably gets from our GPS receivers, while the >second GPS (which it calls "NMAP") location is likely from a lookup >database.   It's MMAP, not NMAP. MMAP (Mobile Message Access Protocol) is a protocol for sending SMS messages over the internet: <http://www.phonescoop.com/glossary/term.php?gid=269> <https://yidonghan.wordpress.com/2008/01/02/mobile-message-access-protocolmmap-version-1-0/> <http://xml.coverpages.org/SMS-MMAPv12a.pdf>     -- 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

Stijn De Jong <stijndekonlng@nlnet.nl>: Feb 19 07:27PM On Sun, 19 Feb 2017 09:41:15 -0800, Jeff Liebermann wrote:   > <http://www.phonescoop.com/glossary/term.php?gid=269> > <https://yidonghan.wordpress.com/2008/01/02/mobile-message-access-protocolmmap-version-1-0/> > <http://xml.coverpages.org/SMS-MMAPv12a.pdf>   Oooops. My eyes! They suck! That's the main reason I wish the iOS iPads could do some of this stuff. I can't *see* the little screen on my S3!   Thanks. I appreciate the correction.   Another thing I appreciate is that you researched the NetMonitor app, which does logs *better* than all the other apps did! a. NetMonitor logs are the most customizable http://i.cubeupload.com/ZAcsok.jpg b. GSM Signal Monitoring has great csv logs http://i.cubeupload.com/69bgcS.jpg b. CellTracker logs manually (by pressing the blue arrows) http://i.cubeupload.com/FhY2UX.jpg   They all do logs differently though; but what I like about NetMonitor logs is that you can *change* how the site appears in the real-time log.   So, for example, if a site shows up in NetMonitor originally as: 12345 54321 6789 California, USA, Santa Cruz, CA 95060   You can change that to something that makes sense to you, such as: 12345 54321 6789 1555 Soquel Dr. tower, north facing alpha sector   Or even just the one line: 1555 Soquel Dr. tower, north facing alpha sector   And, in all subsequent logs (real time or post mortem), it will show up that way for you (or so it seems) with an asterisk in front (it seems).   In summary, all three apps listed above do logs differently, but the app you suggested for logging does them the best because they're just a bunch of numbers if you can't change them to indicate something more meaningful to you (such as the sector or the street location) in real time.

Stijn De Jong <stijndekonlng@nlnet.nl>: Feb 19 07:46PM On Sat, 18 Feb 2017 19:48:00 -0800, Jeff Liebermann wrote:     > I dialed #878# and got: > "Welcome to Verizon Wireless. Your call cannot be completed as > dialed..."   I got a similar message, but for T-Mobile (your call cannot be completed as dialed, or something like that). But I didn't know if it was just T-Mobile or not.   Thanks for running that test for Verizon.     > Nice article. I think there is a way of extracting the sector but I > don't know what it might be and am too lazy to work it out right now. > My leaky roof and irate customers come first.   Speaking of leaky roofs, I can't believe the rain we've been having! I am sick and tired of rain, mudslides, & road closures near the summit! We're getting a windy storm tomorrow too! (Brace yourself!).   I have completed my initial tests on the Android free apps though. I know I'm done with the first phase when I've uninstalled all the apps that irk me.   I'm left with these four, each of which does something nice that the others don't do as well. https://i.cubeupload.com/vKLAu8.jpg   While some of these apps do wifi scanning, I keep a separate folder for the best freeware wifi scanners, as shown below: https://i.cubeupload.com/Z1qvPZ.jpg   If folks want to save time, you can't go wrong loading just one or more of those four best freeware apps (in my tests anyway) for cellular debugging.   Network Cell Info Lite, version 3.30: http://i.cubeupload.com/HoKTav.jpg http://wilysis.com/networkcellinfo https://play.google.com/store/apps/details?id=com.wilysis.cellinfolite   Netmonitor, version 1.2.15: https://i.cubeupload.com/TfDJaS.jpg https://play.google.com/store/apps/details?id=com.parizene.netmonitor   MIT CellTracker: http://i.cubeupload.com/ZHepme.jpg http://people.csail.mit.edu/bkph/CellTracker   GSM Signal Monitoring, version 4.02: http://i.cubeupload.com/V9O0Gg.jpg https://play.google.com/store/apps/details?id=com.signalmonitoring.gsmsignalmonitoring   You'll also want this, but I put it in my WiFi folder instead: WiGle WiFi Wardriving (which also reports cellular towers): http://i.cubeupload.com/ZPva3O.jpg https://play.google.com/store/apps/details?id=net.wigle.wigleandroid   Unfortunately, the freeware version of Network Signal Info crashed a lot so I uninstalled it, but if it works for you, it's also very good. Network Signal Info, version 3.63.01: http://i.cubeupload.com/2zK8Ys.jpg https://play.google.com/store/apps/details?id=de.android.telnet   If you want log files, you are limited to these three, in order: a. NetMonitor logs are the most customizable http://i.cubeupload.com/ZAcsok.jpg b. GSM Signal Monitoring has great csv logs http://i.cubeupload.com/69bgcS.jpg b. CellTracker logs manually (by pressing the blue arrows) http://i.cubeupload.com/FhY2UX.jpg   As always, I hope these detailed summaries and research and tests help others now, and in the future. Of course, if you have improvements, please share!

Stijn De Jong <stijndekonlng@nlnet.nl>: Feb 19 07:54PM On Sun, 19 Feb 2017 10:43:16 -0500, nospam wrote:     > and have succeeded:   > <https://ociotec.com/wp-content/uploads/2016/11/proveedor_telefonia.png>   > <https://pbs.twimg.com/media/C29OaIVXAAEPTMG.jpg>   I've seen those pictures before since they were in the references I already cited.   Where is the unique cell ID in those pictures?   There is only one "cell id" and it's simply the number 388, which isn't a unique cell id in any sense of the word.   What do you know that nobody else on iOS knows?

tlvp <mPiOsUcB.EtLlLvEp@att.net>: Feb 19 03:15PM -0500 On Sat, 18 Feb 2017 19:48:00 -0800, Jeff Liebermann wrote:     > I dialed #878# and got: > "Welcome to Verizon Wireless. Your call cannot be completed as > dialed..."   Same here, on the other coast, but with the additional text, "Announcement for switch [digit] [digit] [digit] dash [digit]."   (Actual digits redacted to "[digit]" for privacy's sake.) Cheers, -- tlvp -- Avant de repondre, jeter la poubelle, SVP.

nospam <nospam@nospam.invalid>: Feb 19 03:24PM -0500 In article <o8ct52$19u0$1@gioia.aioe.org>, Stijn De Jong   > > <https://pbs.twimg.com/media/C29OaIVXAAEPTMG.jpg>   > I've seen those pictures before since they were in the references I already > cited.   yet you still claim it can't be done??   > Where is the unique cell ID in those pictures?   > There is only one "cell id" and it's simply the number 388, which isn't a > unique cell id in any sense of the word.   nonsense.   > What do you know that nobody else on iOS knows?   i don't know about 'nobody else' but it's clear as hell that i know way the fuck more than you do.

Stijn De Jong <stijndekonlng@nlnet.nl>: Feb 19 08:44PM On Sat, 18 Feb 2017 23:13:31 -0800, Jeff Liebermann wrote:   >>This is a question and initial observation for Jeff Liebermann. > Why me?   Good question. I guess it's because I've seen so much made-up stuff from the likes of nospam, that you're one of the few people here we can trust.   >>(Or does the boosted signal have its own cell tower identification number?)   > By "booster" are you referring to a bi-directional amplifier like > products from Wilson.   T-mobile gives out a signal booster where you put on unit in the window and another unit in the middle of the house. https://support.t-mobile.com/docs/DOC-14947   It's supposed to "boost" the signal. https://support.t-mobile.com/community/coverage/personal-cellspot/4g-lte-signal-booster   > If so, they repeat exactly the original signals both incoming and > outgoing. What you hear is the tower ID. The device does not > generate any new data or belch a new tower ID.   I think this is the case that the signal booster passes through the original tower ID since I don't see any *new* tower ids when I hook up the signal booster. Of course, it could just be that the signal booster isn't working because the signal strength doesn't get any better either.   > However, if you're referring to a Femtocell or similar internet > connected microcellular device, the answer is yes, they do have their > own unique ID.   I do have a femtocell also, and that *does* have its own unique ID which I have identified already. https://support.t-mobile.com/community/coverage/personal-cellspot/4g-lte-cellspot   So the question was just about whether the booster generates its own unique cell id or if it just passes through the cell ID of a tower somewhere in Santa Cruz or San Jose.     > Yep.   >>Does that make sense?   > Yep.   Thanks. That made sense. By the way, long ago you helped me set up a Linksys WRT54G as a wired extender (yes, you cautioned against it in favor of better solutions).   Do you think it makes a difference if I hook up the femtocell to the wired extender versus the main router?   > How far away do you think the strongest (or nearest) T-mobile cell > tower is located from your test location?   The nearest tower is only a couple of miles away, but consistently I get connected to towers that are ten and fifteen miles away. They bounce around as I watch them from the MIT CellTracker app.     > Any possibility that one of > your neighbors might have a T-mobile microcell box that you're > hearing? I'm suspicious of the rather strong tower signal.   Without the booster and without the femtocell, I get horrid signal, roughly minus 90 to minus 105 decibels. With the femtocell, I get minus 60 decibels consistently. I can even have stronger cellular signal strength than wifi signal strength, which is amazing.   And, yes, *all* my neighbors have either a booster or a femtocell or they use WiFi calling (since bad signal is ubiquitous in these hills).   > is about 0.7 miles or about 4,000 ft. The cell tower would need to be > rather close to your location for that to work. Like I said, I'm > suspicious of what you're measuring.   Thanks for showing me how to do the math to approximate the distance to the antenna based on the received signal strength indication.   I must not have stated clearly which is that the only time I get minus sixty decibels is when the femtotower is in place, where it's only a few feet from my phone.   Otherwise, I get around minus a hundred decibels, which sucks. +27dBm Estimated transmit power from the cell site +10dB My guess of the panel antenna gain -100dBm Receive signal level from your test.   Path loss = 27 + 10 + 100 = 137dB At 700MHz: <http://www.proxim.com/products/knowledge-center/calculations/calculations-free-space-loss> Puts the antenna at about 2 miles away.   There *are* antennas two miles away (and sometimes I connect to them); so the math isn't as bad as I thought. I also connect to antennas ten and fifteen miles away, but that's driving distance, so I'd have to look at the distance as the crow flies, which could be in the less-than-five-mile range.

Jeff Liebermann <jeffl@cruzio.com>: Feb 19 01:00PM -0800 On Sun, 19 Feb 2017 15:15:07 -0500, tlvp <mPiOsUcB.EtLlLvEp@att.net> wrote:     >Same here, on the other coast, but with the additional text, >"Announcement for switch [digit] [digit] [digit] dash [digit]."   >(Actual digits redacted to "[digit]" for privacy's sake.) Cheers, -- tlvp   I tried it again and got the same thing as you ending in "Announcement for switch 40-6". 40 is the SID (system identifier) for the San Francisco Bay area: <http://www.roamingzone.com/sid/> <http://ifast.force.com/sid> The 6 is the NID (network identifier). These numbers also agree with the local VZW tower data as displayed by the NetMonitor app. The phone is NOT activated and therefore shows everything as roaming. Operator: 310 00 (Roaming) Type: CDMA - EvDo Rev A Carrier: Verizon Wireless SID: 40 NID: 6 BID: 4864 Signal: -88dBm   I have some better phones (Samsung S4(?) and S6) in my palatial office that I can try later next week.   -- 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

Jeff Liebermann <jeffl@cruzio.com>: Feb 19 01:46PM -0800 On Sun, 19 Feb 2017 20:44:18 +0000 (UTC), Stijn De Jong >> suspicious of what you're measuring.   >Thanks for showing me how to do the math to approximate the distance to the >antenna based on the received signal strength indication.   Well, I screwed up a little. I left out the antenna gain of your cell phone, which I assumed to be 0dB at 700MHz. That's probably optimistic and -3dB would be more reasonable. So, the calcs should be something like:   +27dBm Estimated transmit power from the cell site +10dB My guess of the tower panel antenna gain ??dB Calculated path loss -3dB My guess of the cell phone antenna gain -53dBm Receive signal level from your test. Path loss = 27 + 10 - (-3) - (-53) = 93dB Calculating the distance where the path loss would be -93dB at 700MHz: <http://www.proxim.com/products/knowledge-center/calculations/calculations-free-space-loss> is about 0.94 miles or about 5,000 ft. The cell tower would need to be rather close to your location or you're getting your signal from the neighbors.   >I must not have stated clearly which is that the only time I get minus >sixty decibels is when the femtotower is in place, where it's only a few >feet from my phone.   The +27dBm (500mw) and +10dBm antenna gain are based on my guess(tm) of the power per carrier for a real cell tower and a typical panel antenna and with some reduction in power thanks to transmit power control. Power levels and antenna gains for DAS (distributed antenna system), small cell, microcell, picocell, analog repeaters, etc are much lower. <http://www.rfwireless-world.com/Tutorials/femtocell-vs-picocell-vs-microcell.html> I can build you a table for the various device that will produce more accurate results.   >fifteen miles away, but that's driving distance, so I'd have to look at the >distance as the crow flies, which could be in the less-than-five-mile >range.   Also look at the antenna gains on both ends, any RF obstructions including Fresnel zone blocking, and the accuracy of the signal level meter in the cell phone. Remember, in RF real RF power, sensitivity, antenna gains, and path loss, are always worse than calculated.   I don't want to comment on the T-Mobile signal booster due to lack of experience with the device and general lack of info on what's inside. If you can supply an FCC ID number, I might be able to excavate something useful from the FCC ID data dumpster.   -- 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

Stijn De Jong <stijndekonlng@nlnet.nl>: Feb 19 10:09PM On Sun, 19 Feb 2017 13:46:55 -0800, Jeff Liebermann wrote:   > experience with the device and general lack of info on what's inside. > If you can supply an FCC ID number, I might be able to excavate > something useful from the FCC ID data dumpster.   Just returned from a hike in the mountains. It's freezing in the mountains today. You are sending cold winds from Santa Cruz over the ridges!   T-Mobile calls *everything* a "Personal CellSpot" so, this is a photo of my signal booster from T-Mobile: http://i.cubeupload.com/6Jpa5v.jpg   On the back of the existing devices are these FCC IDs:   1. Window Unit: FCC ID YETD24NU https://fccid.io/YETD24NU User manual: https://fccid.io/document.php?id=2270465   2. Coverage Unit: FCC ID YETD24CU https://fccid.io/YETD24CU User manual: https://fccid.io/document.php?id=2270512   What I'm mostly interested is in figuring out how to tell if they're working, since I can't seem to get different results with or without them hooked up (and, of course, with the femtocell connected to my router turned off).   I'm guessing based on the experimental results (which could be misleading) that they just pass through the cell tower id.

Jeff Liebermann <jeffl@cruzio.com>: Feb 19 02:47PM -0800 On Sun, 19 Feb 2017 22:09:51 +0000 (UTC), Stijn De Jong   >T-Mobile calls *everything* a "Personal CellSpot" so, this is a photo of my >signal booster from T-Mobile: >http://i.cubeupload.com/6Jpa5v.jpg   Here's the company that makes it (Nextivity): <http://www.cel-fi.com/duo/> Methinks that's the model. Here's the "data sheet" which amazingly is devoid of most useful numbers: <http://content.cel-fi.com/content/doc/duo_datasheet.pdf> It does mumble that it uses a 5GHz link between the two boxes.     >1. Window Unit: FCC ID YETD24NU > https://fccid.io/YETD24NU > User manual: https://fccid.io/document.php?id=2270465   That's the unit with the cellular radio end. Transmit power is about 100 mw. Doesn't appear to use wi-fi on the 5GHz band so my guess(tm) is that it simply remodulates the received 1700/1800 RF carrier onto 5GHz. You probably won't see the 5GHz line with any of the Android wi-fi tools, such as WiFi Analyzer.   >2. Coverage Unit: FCC ID YETD24CU > https://fccid.io/YETD24CU > User manual: https://fccid.io/document.php?id=2270512   I'll look some more after I haul some firewood up the hill, clean off the roof (in the rain), and deal with friends bugging me about their weekend projects. Also, I'm still having problems with the new and improved FCC ID document format, which balkanizes the test results into as many seperate sections as possible in order to make them difficult to download and read.   >off).   >I'm guessing based on the experimental results (which could be misleading) >that they just pass through the cell tower id.   That would also be my guess(tm). Nothing is demodulated or decoded by the unit. Simply amplified and retransmitted on 5GHz. More 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

Jeff Liebermann <jeffl@cruzio.com>: Feb 19 03:00PM -0800 On Sun, 19 Feb 2017 14:47:28 -0800, Jeff Liebermann <jeffl@cruzio.com> wrote:   >devoid of most useful numbers: ><http://content.cel-fi.com/content/doc/duo_datasheet.pdf> >It does mumble that it uses a 5GHz link between the two boxes.   Here's the basic patent on the system which includes a block diagram and description showing how it works: "CDMA UNII link" <https://www.google.com/patents/US8351366> That's for CDMA, but I couldn't find anything for GSM, UMTS, and WCDMA. More patents: <http://www.cel-fi.com/patents/> I'll grind my way through the list 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

"Benderthe.evilrobot" <Benderthe.evilrobot@virginmedia.com>: Feb 19 08:12PM "Don Young" <irdon13@gmail.com> wrote in message news:45c14635-8b6d-440f-afe7-d657f500e11c@googlegroups.com... > working , if anyone could help me , contact me at "FAKE NEWS" on You Tube > (I do not open e-mails for fear of being hacked ) Thank you , Don Young > ( looking forward to a reply and some help )   There are probably still some CROs finding their way onto the market as people go digital.   Some of the test equipment brokers aren't too generous, but its worth trawling through the ads in the back of various magazines.   There's a lot of non-bargains out there - but with a bit of effort you may find a real gem.

oldschool@tubes.com: Feb 19 04:58PM -0600 On Sun, 19 Feb 2017 20:12:53 -0000, "Benderthe.evilrobot" >trawling through the ads in the back of various magazines.   >There's a lot of non-bargains out there - but with a bit of effort you may >find a real gem.   Try Craigslist!

"pfjw@aol.com" <pfjw@aol.com>: Feb 19 02:01PM -0800 On Sunday, February 19, 2017 at 8:39:06 AM UTC-5, Steve Kraus wrote:   These devices usually run on a cartridge motor, often paired with a non-synchronized motor if any torque is really needed. The synchron more-or-less governs the standard motor - within very broad limits. As you note, these are not designed to be precision devices as there is really nothing to be gained on a cheap timer that gets reset every so often. But any load on the motor for these devices will definitely slow things down until it re-aligns.   If it is a purely cartridge-driven device - a regular electric clock for instance, there is a very short gear train of lightweight gears and a soft-switch for the alarm function, if any.   More-so, tariffs now are far less stringent on AC frequency, as you noted. Keep in mind that it is no longer a small, happy family of large utilities, but a much broader family of small generators, many using very small solid-state grid-tie inverters that may be very precise in frequency regulation - but may not be instantly synchronized to the grid when they come on-line. And solar micro-converters are nightmares as not only do they need to align to the grid, but to each other as each comes and goes on and off-line. The process is very nearly instantaneous, and the are not supposed to tie until properly synched - except...   Peter Wieck Melrose Park, PA

oldschool@tubes.com: Feb 19 04:57PM -0600 On Sun, 19 Feb 2017 07:38:58 -0600, Steve Kraus >variation I see though it could be some of it.   >Again, there is no practical point to this; a digital timer can be used >where precision is needed. I am just curious.   If they are only a minute off, or even 5 minutes, you're doing good. They are not meant for precision.

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