Jump to content

WiWavelength

S4GRU Staff Member
 View Profile  See their activity

  • Posts

    18,133

  • Joined

  • Last visited

  • Days Won

    429

 Content Type 

Everything posted by WiWavelength

  1. WiWavelength
    I am calling placebo effect and not buying the so called "fix" -- unless I see some before/after CDMA1X engineering screenshots. It has long been the case that you do not get to dictate which codec your handset uses. The network can override your settings based on capability and current loading. AJ
  2. WiWavelength
    Dropping to CDMA1X to send SMS is normal behavior. Apparently, you have not been following the single radio e/CSFB discussion. Start by reading Robert's article on The Wall. Then, read the thread. http://s4gru.com/index.php?/blog/1/entry-357-nexus-5-and-lg-g2-experience-temporary-sprint-lte-connectivity-issues-due-to-circuit-switched-fallback-technology/ http://s4gru.com/index.php?/topic/5001-breaking-band-tri-band-lte-ecsfb-issues-thread/ AJ
  3. WiWavelength
    He must really enjoy the vibrational pleasure. AJ
  4. WiWavelength
    Many handset LTE antennas are optimized for horizontal orientation because, presumably, that is how data is expected to be used. AJ
  5. WiWavelength
    Well, what do you think is happening in your pocket? About 10-20 dB of attenuation... AJ
  6. WiWavelength
    I am sorry. I screwed up that previous post. It was supposed to read like this... And that is why I suggest watching use of the word "carrier." Even "wireless carrier" does not eliminate the ambiguity. AJ
  7. WiWavelength
    Is Sprint a 5 MHz FDD carrier? Or an operator/provider that has deployed a 5 MHz FDD carrier? Catch my drift? AJ
  8. WiWavelength
    Carrier or provider? Those are two different things. AJ
  9. WiWavelength
    Comparing the Nexus 5 to the HTC One max is like "throwing a hot dog down a hallway." AJ
  10. WiWavelength
    AJ
  11. WiWavelength
    Yes, I do frequently take charge. AJ
  12. WiWavelength
    You need to stop double, triple, quadruple cross posting these. Pick one thread, and put them there. AJ
  13. WiWavelength
    I doubt that the New York uptick is due to Spark so much as it is due to maturation of the Network Vision rollout and adoption of LTE capable devices. June 2011 - December 2013: AJ
  14. WiWavelength
    I am so glad that you quoted that entire lengthy post to respond with two lines. AJ
  15. WiWavelength
    Guys, please keep in mind that this Cincinnati thread is for local Sprint discussion. If you want to talk porting to other providers, you need to take it elsewhere. We have already had recent problems in this thread. Do not force staff to shut it down again because it will be gone for a long while. And members may be subject to corrective action. AJ
  16. WiWavelength
    I bet it does not provide even frequency response across the entire PCS G block. The slope of the lowpass filter may really be setting in by the upper end of the PCS G block, taking out some of the higher frequency Resource Blocks along with it. AJ
  17. WiWavelength
    Nope. The same is true of TD-LTE. Just like WiMAX, it is very much akin to powerful Wi-Fi. Your problem is that you are comparing a poor performing, outdated device to a much better performing, much newer device. Had WiMAX gained sufficient traction to be included in today's devices, the positive difference would be night and day. AJ
  18. WiWavelength
    To draw attention to the sector with uptilt, you should go pitch a tent underneath it. Then, when it gets fixed, you can get fixed, too. That should get rid of the uptilt for both it and you. AJ
  19. WiWavelength
    Guys, experimentation for the sake of knowledge is fine. Heck, we encourage it. But my spidey sense is tingling here. At least one of you is probably trying to get "unlimited" LTE data on a tri band hotspot by using your handset SIM card, which is provisioned for "unlimited" data. Know that is cheating the system, violating your Sprint Ts and Cs. If this discussion pushes the envelope, we will shut it down, and members may be subject to disciplinary action. AJ
  20. WiWavelength
    The iPhone can go get bent. Apparently, yes. AJ
  21. WiWavelength
    The higher allowed ERP/EIRP for <1 GHz bands generally does not enter the equation because mobiles do not take advantage of it. If anything, on the mobile side, <1 GHz bands (e.g. 15 dBm) tend to be designed for 5-10 dB lower ERP/EIRP than do >1 GHz bands (e.g. 23 dBm). AJ
  22. WiWavelength
    I expect so, though "enginerring" screens are often a bit loose and vague in their terminology. But EVRC-B -- of which EVRC-NW is basically an HD Voice extension -- allows a network controlled tradeoff between fidelity and capacity. When the network starts to run low on capacity, it can reduce the number of rate 1 frames allowed, forcing more rate 1/2 frames as the highest encoded bit rate, thereby improving Ec/Io but lowering voice quality. AJ
  23. WiWavelength
    Yes, your free space path loss math is correct, though for sake of simplicity, I usually calculate it like this: 20[log(F1/F2)]. As such, Cellular/SMR/700 has basically a 6-9 dB advantage in received power from the antenna aperture over the equivalent in PCS/AWS. But free space propagation is a good approximation only very close in with clear LOS to a site. Various empirical models have been developed to account for propagation over a non smooth, even obstructed, curved Earth. And those empirical models are likely to show closer to a 15-20 dB difference between the <1 GHz bands and >1 GHz bands. Of course, one other factor to keep in mind is antenna gain. This varies from handset to handset, but a common pattern is that the <1 GHz bands have slightly negative antenna gain (e.g. -2 dBi), while the >1 GHz bands have slightly positive antenna gain (e.g. 1 dBi). So, that can tilt the 15-20 dB difference back the other direction by 3 dB or so. AJ
  24. WiWavelength
    Nope. VZW bought out or ran out all other providers, then divested one property to AT&T. It is a bit like Walmart coming to town and wiping out the local businesses. AJ
  25. WiWavelength
    No, as I said previously, I am not buying it. AJ
×
×
  • Create New...