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MrZorbatron

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Everything posted by MrZorbatron

  1. Does anyone know what thresholds need to be crossed before you get a message announcing the upgrades for your area? Is it: - a percentage of local sites being worked on? - a percentage of local sites having been completed? - a percentage of active coverage for a specific service (NV 3G, 4G) in your area? - activation of a cluster of 3G sites? - any combination of the above scheduled for the immediate future? I got this message today: If you check LTE coverage for 48362 (Lake Orion, MI) on Sensorly, you will see a lot of coverage, but not of particularly high density. I
  2. Download signal check and look. It was created by a member here. Otherwise, you can just check your phone's debug screen. Another possibility other than low signal exists as well. If you are in a fairly dense area and only one or two sites have LTE service, then those sites could easily be seriously overloaded. The easiest way to spot this is to run a speed test. If your speed test shows the speed figures to be upside-down, as in with your transmission capacity significantly higher than your reception capacity, then your site is most likely substantially overloaded. There are cases o
  3. Completely incorrect. The LTE signal is not ever enabled until the high capacity backhaul is installed. If you see an apparently high signal level, LTE, and bad speed,you need to check the actual LTE signal level because often LTE is from a different source site than that which is providing your CDMA connection. It's actually really useful this way because of the way the "breathing" phenomenon affects CDMA far more than LTE. With LTE, as utilization goes up, the only issue beyond link saturation is an increase in crosstalk and packet errors. With CDMA, both a serious increase in the no
  4. Mine was on auto CDMA/LTE. CDMA Only mode should only be used for troubleshooting, which is by definition a temporary condition.
  5. Read from a reputable source. An extremely strong EMP can fry electronics. A little bit of EMI or RFI as would be produced by sunspots and solar flares might cause a few single bit errors on a complicated enough computer system, so your Windows box might bluescreen, Mac might say you need to reset your computer, and UNIX might kernel panic, but otherwise no permanent harm will be done. I remember when idiots were lining up to pay dishonest technology companies thousands and tens of thousands to "audit" their PC based, Mac, or UNIX systems for "Y2K" bullshit. At the end, it was all a big
  6. Speaking of unity, the European Union is about to heavily regulate with the intent of eventual abolition of roaming charges between compatible carriers within its member countries.
  7. Current Nextel sites use three to four antenna panels, which tend to be deep and narrow, per sector, making 9 to 12 per site. Some older and still functional sites are still using the omnidirectional segmented monopole or vertical dipole antennas, of which there would generally be two. In these cases, the site works as a single sector but all practical operational matters remain the same otherwise. Don't forget that most city or county trunked radio services use very similar looking equipment. You can often tell what frequency an open element antenna is optimized for by its segment l
  8. Yes, but except for very rare cases, and unless using microwave backhaul, this combination of boxes and frame is installed just before the cabinets. If it is not installed before they arrive, it is installed before they are moved to final position.
  9. At least in Michigan, this is how they have been bringing fiber from the backhaul provider to the new cabinets. This frequently, but not always, shows up before cabinets. Backhaul is never installed before this structure is present. Often times, this is installed much before the new cabinets are. In all cases, the new cabinets are installed with their backs to this structure. I have picked this site because it does not even have new cabinets installed yet: Here is a similar installation after the cabinets have been installed but not yet connected: In this case, the fib
  10. Yeah and it makes them not recognize my photographs too.
  11. Let us not forget the Purgatory of the areas adjacent to the Canadian border. That 80-100 miles of hell affects a surprising number of people.
  12. This is and is not true. Latency is a big part when the page is comprised of lots of simple elements. Some of these modern pages, however, have +1MB data to load per page. Once the size per item begins to overshadow the number of items, the relevant statistic becomes bandwidth and not latency. 200ms to establish connections, which conclude 200ms later after carrying 150K each, would be rather fast. Think of if you had 80ms latency but to load each 150K item took 400ms. Overall, you are still feeling slower, despite the lower latency connection.
  13. - Samsung SPH-A500. Pretty but awful radio. Traded (plus $100) for Sanyo 5300 after about 5 months. - Sanyo SCP-5300 (AKA Sprint VM4500, during the short lived Sprint renumber by market position kick). Outstanding reception. Also the first camera phone model with a built-in flash. Actually took better pictures than most phones until about two years later. - Sanyo SCP-5500. All around great phone. Took video too. It sits forever charged and waiting for me in case it's ever needed again. Definitely one of my favorites. - Samsung SPH-A900. What the RAZR should have been, though ki
  14. I haven't observed the numbers on the debug screen to correlate with the tower numbers on the map myself.
  15. You can tell approximately by signal strength though. If you're at -66dBm or so, generally you are within 500' of the tower. Also, in cases like San Diego, antennas tend to have more down-angle to deliberately limit range, thus decreasing interference resulting from overlap with neighboring cells (which could reduce capacity if not mitigated). This additional downward focus also serves to increase signal strength within the area served by the tower, improving in-building performance.
  16. Yes. You look for the big neon sign that says "LTE is here!" More seriously, you could manually reset the radio on your phone while near the tower and then check signal level using LTE RF engineering screen or the status screen on your phone (if it shows LTE signal level there, not all do) while under or very close to the tower in question. Resetting the phone is done by cycling it on and off of Airplane mode, or on some models, turning cellular data on and off is sufficient to trigger a re-scan. Be sure you leave it in airplane mode for at least 10 seconds or so and see the signal bars
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