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hhm0

S4GRU Member
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  • Phones/Devices
    LG D820
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    Not Telling
  • Location
    SID 4171
  • Here for...
    4G Information

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  1. Or for a free call, call *2 (customer svc. number) then hang up right away
  2. Yes 8 4G and 2 3g (with 3g @ 1 new nv site) upgrades, according to (non-s4gru-sponsor) source(s).
  3. By the way this has been happening for a while, whenever i try to view something there, for a month or so (since getting new device).
  4. I cannot access IETF sites, for example tools.ietf.org/html/rfc2616, using sprint's network (tested on 3g). On a land-based connection this works ok. Is this intentional, or is it a network mishap? My guess is the second. Maybe some kind of AS peering issue or something like that? Or does this happen when connecting to stray airave signals?
  5. Also, it seems like network vision has halted at the City of Pittsburgh borders for now. Why might this be the case, that the market has been getting updates, but not the city itself? Any guesses would be appreciated :-D PS Thanks everyone who answered to my earlier questioning :-)
  6. Update! (1) It seems that the pittsburgh area has eCSFB issues, since the legacy vendor was Lucent and the network vision vendor = samsung. This stops tri-band capable devices accessing LTE, in the places which have it. (2) LTE is sparse in between the rivers, with more LTE upgrades coming some time within the next 6 months (according to Sprint techsupport). This makes it more difficult to receive LTE on the devices which can get it already. So when sprint updates the towers for LTE and network vision, both these issues would go away. However the way the weather is, they may wait for warmer, better weather? Patience must the name of the game here :-) P.S. To anyone who has a say in the updating progress...please see this! :-) Does anyone have better info on when upgrades arrive than sometime within the next six mos.?
  7. It seems like, looking at sensorly etc., that the suburbs of the 'burgh have a lot more 4G LTE than the 'burgh itself; but the densest populations (between the three rivers) do not yet have 4G. Is this connected to the fact that these areas have a lot of 4G WiMAX (on sensorly)? (if so, doesn't wimax only use the EBS and BRS frequency bands? so why no PCS and SMR bands LTE there) Or maybe is this because of CSFB issues (so tri-band phones can't connect)? Or simply because the sourrounding areas are considered western PA market and not pgh market, and pgh market is later in scheduling?
  8. Antenna input is attached to coaxial cable which goes to somewhere outside (hopefully roof antenna, hard to work outside in the winter coldness to verify this!). 1x800 voice call, uplink (signal changes based on voice, full volume -> full signal): 1x800 voice call, downlink (in order to see any change in signal, had to hold the device within a few inches of the SDR device. Signal may be some kind of subtraction/difference or something.): Bonus... EV-DO data 1900 downlink:
  9. Yup, got same message earlier today. Also, seems now to prefer 1x 800 (SID 22427) now over 1x1900 (SID 4171) after PRL and profile updating. Before would always be on 1900, besides for short period of time during scanning. Still same PRL number as before however, so maybe this is because of tower upgrades (or profile update?).
  10. OK, thanks for the answers, that makes lots of sense! Seeing that LTE is just starting out for sprint, I could guess it would take a while. I guess that answers what I was wondering, namelay, whether a move off CDMA would ever be considered in the future (since Sprint's been CDMA for a long time (>10 years, I think). Sprint seems to still be a major Qualcomm consumer (for example, Direct Connect is based off Qualcomm's QChat), but Qualcomm itself seems to be moving to LTE (and away from legacy CDMA too). So, I suppose it is likely that by the time 5G would roll around, we would have full LTE. Even with all the bands, I think having everyone on one tech will be a good thing! :-)
  11. Thanks for the info, everyone! Makes sense. (and as far as I know the RTL-SDR does not use beamforming techniques for SDMA receiving out-of-the-box :-D) But anyway, it is pretty awesome seeing my device radio-waving! I don't have an amatuer radio antenna, since I don't have an amateur radio license (at least not yet)!
  12. Is it known whether sprint is looking to, or has plans to, decommission their CDMA stack eventually in favor of migrating to LTE(-Advanced)/(E-)UTRA? This would make sense, since data is already being moved to LTE, and voice is presumably in the pipeline (VoLTE), and SMS is surely possible over LTE too? Also, CDMA, while a breakthrough at first, is now seen as an unnecessary complexification (http://gnuradio.org/redmine/projects/gnuradio/wiki/OpenBTSBackground#GSM-is-Old-and-Boring-Why-Not-CDMA), and Sprint also must pay royalties to Qualcomm when using CDMA technology. And, looking at the Qualcomm website, it would seem that they, too, are pushing LTE as the way forward, and CDMA not as much. It would seem at first glance that Sprint has lots to gain, and little pain, in fully migrating to LTE and decommissioning its CDMA networks eventually (similarly to the AMPS story). .
  13. http://www.evrytania.com/lte-tools/78-default-category/77-lte-cell-scanner from http://sdr.osmocom.org/trac/wiki/rtl-sdr
  14. After reading the awesome post @ http://s4gru.com/index.php?/blog/1/entry-345-whats-the-frequency-kenneth-interpreting-your-engineering-screen-part-one/ , I decided to do some stuff with my LG-D820, RTL-SDR(w/E4000,and a 1-paper-clip antenna). Using the calculations mentioned in that post, I tuned to the 18xx frequency, and to the 19xx, based on the info from 1x engineering. I saw a wider signal than I was expecting, but soon found that the 1900 band uses 5MHz allocations, and not 1.25 as 800 does. I have been getting eHRPD w/EVDO, and occasionaly 1x, so did not need to check LTE. I made a call, checked for new email, and streamed video, as testing. However, according to that post, 18xx is uplink (phone to tower) and 1900 is downlink (tower to phone). This was what the looking around showed me. However, I only saw traffic on the uplink (a lot, proportional to the actions being performed (email checking makes a bit of activity, and watching streaming video makes much more, for longer). However, on the downlink frequency, no discernable activity showed. Is this because my paper clip antenna will not pick up the towers anyway, or is this my device doing secret stuff? :-D Or is an alternate downlink frequency being used, or is my device rebroadcasting traffic (for the NSA :-D), or maybe for traffic alleviation via mesh network :-D? Attached is the screen of SDR app! Enjoy! :-)
  15. It said the band information (♪!) on the best buy phone boxes on one for which I checked. I figured that would be a good way to know if it had the benefits of sprint spark℠ (The one I checked only mentioned band 25/1900 MHz, by the way).
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