WiWavelength

The handset is idle, right? When actually transmitting, it will likely switch antennas. AJ

Yeah, you know who would like that, the "jizz-um" and "3G-pee-pee" fan boys. AJ

No, that is not how CDMA1X operates. It does not switch carrier channels simply because one has a greater signal strength than another. Once on a traffic channel, the only reason why a voice call might switch carrier channels is if the network directs it to do so. And that explains why a poor CDMA1X 800 carrier channel might get switched to a strong CDMA1X 1900 carrier channel upon traffic channel origination. For now, chalk up koiulpoi's inconsistent experience to using an engineered PRL and CDMA1X 800 not being officially launched yet. Carrier channel management and handoffs will get better. AJ

Bar none, cell sites are rather expensive to erect, lease, and/or operate. That is why expanding rural coverage can be a dicey proposition. AJ

No. You are missing the point. Read my article and the entire thread. The HTC One has two antenna arrays for a reason. If one is in a fade, it can switch to the other. AJ

I am only 35 miles away. I had my ringer silenced and must have missed the call to join the committee. Damn. AJ

That's what she said... AJ

CDMA1X will eventually be retired. But that is not likely until the end of this decade. VoLTE is not and will not be ready to replace the reliability of CDMA1X for many years yet. AJ

See above...the antenna above... AJ

Why should it work while you are roaming? Then, both you and Sprint are subject to not only roaming costs but also international dialing costs set by the roaming carrier. Complaints would ensue. AJ

Yep, I wrote about that in my article: http://s4gru.com/index.php?/blog/1/entry-342-updated-all-for-htc-one-htc-one-for-all/ Antenna 0 is on the bottom. Make a call so that the CDMA1X transmitter is active, and I would not be surprised to see the HTC One shift to antenna 1, which is on top. It is optimized for LTE, not CDMA1X, but it should certainly be in better position than the 25 dB fade experienced at antenna 0. AJ

AJ

Well, let us first break down rebanded SMR 800 MHz -- more specifically, the ESMR portion that Sprint controls. At its maximum bandwidth (e.g. outside of the Southeast and IBEZ), Sprint ESMR is 817-824 MHz x 862-869 MHz. See my graphic: The bandwidth is divided into 7 MHz uplink and 7 MHz downlink. This is what I generally refer to as 7 MHz x 7 MHz, or more succinctly, 7 MHz FDD. Now, technically speaking, the uplink and downlink could be unpaired so that TDD airlinks could operate in each. But this would require FCC approval. And TDD operation in the 862-869 MHz segment would likely prove problematic, as that segment is directly adjacent to the Cellular 850 MHz downlink at 869-894 MHz. TDD mobiles would be transmitting on a time division basis in 862-869 MHz, while nearby FDD mobiles would be receiving the Cellular 850 MHz downlink in 869-894 MHz. Adjacent uplink and downlink with nearby transmitters and receivers can cause interference due to spurious emissions. This is similar to the problem faced between LightSquared and GPS, as well as Dish S-band/AWS-4 and PCS/AWS-2 H block. AJ

FYI, jegillis was kind enough to start the HTC One user thread, so most discussion should shift over there now. This thread will remain open for the time being, but we may decide to close it in the near future. http://s4gru.com/index.php?/topic/3610-htc-one-user-thread/page__fromsearch__1 AJ

We know that the Field Trial.apk is still present via its dialer code (##33284#). Is the Testing.apk still accessible (*#*#4636#*#*)? It can be useful for forcing the handset to use specific airlinks (e.g. CDMA1X only, LTE only, etc.). AJ

For whatever reason, the 5 MHz FDD limitation affects Samsung devices. But from my series of FCC OET articles, I can say that HTC, Motorola, LG, and Apple devices are authorized for at least 10 MHz FDD configuration, too. AJ

The issue with WiMAX was not so much speed as it was coverage and battery life. In Atlanta, you have pretty good WiMAX site density, as do/did I in Kansas City. But how is your battery life? The problem is that WiMAX handsets all utilized multiple chipsets, and those chipsets were several generations prior to the ~28 nm process chipsets that we have now. Had WiMAX stayed relevant longer, we would have seen improvements in power management, just as we have with LTE handsets. Keep in mind that Atlanta is a SouthernLINC market; thus, Sprint has to share rebanded SMR 800 MHz with SouthernLINC. For that reason, there may be no LTE 800 in Atlanta. Or, if there is, it will likely be 3 MHz FDD bandwidth, as compared to the 5 MHz FDD bandwidth available outside of the Southeast and IBEZ. So, LTE 800 could help with coverage in Atlanta, but it would not likely help with speed. AJ

Indeed. FCC approval is just that -- approval to go forward. But it certainly does not consummate the deal. Let the FCC finish its review, say yea or nay, and then the Sprint board can consider its options. AJ

Ryan, you blinded me with science. Or maybe that was just the reflection off Dan's head. AJ

Thank you for supporting S4GRU, lilotimz and drir. I have matched both of your donations, and I see that you have already been upgraded to Premier status. Enjoy and learn! AJ

Let me make this a bit more interesting. Are you on the fence about becoming a Premier Sponsor? Well, here is an offer that you should not refuse. Donate $50, and I will match your $50 donation to get you over the hump. This is a one time deal and limited to the first two members to respond to Robert via PM. As for Premier status, if you are at all curious about the intricacies of the Sprint and Nextel networks, as well as Network Vision deployment schedule, Premier is worth it for the maps alone. Trust me. AJ

You use 4G (WiMAX) at home because Wi-Fi is "really slow"? Well, as more people do what you do, get ready for 4G (WiMAX or LTE) to become "really slow," too. Your solution turns into the problem. Foresight is key, but I find that many people do not care to or are not able to look beyond the here and now. AJ

Yeah, I want to try out a plastic dummy version of an aluminum handset. Although for Samsung handsets, the plastic dummy version should be highly representative of the real thing... AJ

Anecdotal evidence is just that -- anecdotal. And to be gauging the speeds that you are getting, you must be running a lot of speed tests. Tsk, tsk... AJ

Well, if you want to blow up the current system, then you can blow up spectrum licensing, too. The appropriate solution is not to license spectrum at all. It is a public resource. And it should be under the control of something along the lines of the "Wireless Network Corporation" -- a public entity that holds all spectrum and deploys all wireless infrastructure. Then, all wireless "carriers" operate as MVNOs by purchasing capacity from the public entity. The "carriers" can compete on price and service, but not on coverage as they do now, like some sort of irrational system of parallel private highways. So, if you want to talk pie in the sky, there it is. As for your other points, they overlook some important considerations. But I will have to address those later when I have more time... AJ