WiWavelength

Oh no, "loose 1900 MHz"? Now, I need to make yet another sign. AJ

Guys, no, the PRL influences only system acquisition while a handset is idle. The PRL is out of the loop when a handset is on a traffic channel. Then, inter band handover is entirely network dependent. AJ

Yes, that is AT&T W-CDMA 850 in Los Angeles. AJ

Wow, based on the response, this thread may eventually take over the site. Welcome to BBQRU. AJ

I bet the new signal strength dots are actually quantum dots. AJ

I find it oddly compelling that the link you cite for the Sprint Vital by ZTE is from fool.com. "A fool and his money are soon parted" -- that is about to happen to people who buy a cheap ZTE handset. AJ

I have been doing some TDD research over the past few days. For mobile WiMAX, the two most common downlink:uplink symbol ratios are 29:18 and 35:12. In its FCC construction requirement fillings, Clear states that it has utilized the 29:18 ratio. If we assume 2x2 MIMO and 64-QAM on the downlink but no MIMO and only QPSK on the uplink, then that symbol ratio calculates to a 348:36 bit ratio, which is reasonably close to 10:1. But that represents a best case scenario on the downlink, worst case scenario on the uplink. So, I suspect that Clear has implemented some throttling beyond just the downlink:uplink ratio to limit the uplink to 1 Mbps or 1.5 Mbps. AJ

Chicken-head...which I imagine you could find at the aforementioned brothel. AJ

All GNSS frequencies are greater than 1 GHz. So, there is no possibility of overlap or adjacency with 600 MHz spectrum. I would assume that Qualcomm must be concerned about harmonics at certain frequencies inside mobile devices that could disrupt GLONASS reception. But if GPS is primary, should GLONASS be a major concern? AJ

I would really enjoy knowing how old you are. You have a 13 year old brother. In that case, are you still a teen or just removed from your teen years? I would probably put my money on that bet. AJ

Nope, PCS and AWS share basically the same EIRP limits. PCS: base: 1640 W, 3280 W (county pop density < 100); mobile: 2 W AWS: base: 1640 W, 3280 W (county pop density < 100); mobile: 1 W Furthermore, few, if any base stations actually hit those power limits. And while AWS mobiles are limited to 3 dB lower EIRP than are PCS mobiles, nearly all CDMA2000, W-CDMA, and LTE devices do not output anything close to 1 W. Most are limited to around 200 mW (23 dBm). Thus, power limits are almost entirely non factors. Compared to PCS, AWS does have slightly worse free space path loss on the downlink, and some have stated that AWS experiences considerably greater environmental attenuation on the downlink. So, those could be limiting factors. As for T-Mobile, it has started constructing AWS W-CDMA only coverage in some rural areas. And we will not likely see any PCS W-CDMA only coverage or PCS W-CDMA only overlay on existing GSM coverage anytime soon because that would present two distinct problems. T-Mobile would have to distinguish between AWS W-CDMA and PCS W-CDMA in its coverage maps. And a huge chunk of T-Mobile's subs would not be able to utilize new or overlay PCS W-CDMA coverage in rural areas, as their devices do not support PCS W-CDMA. As such, I return to the backhaul explanation. Circa 2005-2008, I basically left T-Mobile for dead in ever legitimately getting back into the wireless data conversation. Having to wait for the AWS auction in 2006, then obtain infrastructure and deploy nationwide, put T-Mobile about four years behind VZW and Sprint, to a lesser degree, AT&T. I thought that would harm T-Mobile such that it would never catch up. But, during that time, T-Mobile was able to connect advanced backhaul to many of its urban sites. In that way, T-Mobile used its tardiness to leapfrog the other big three. However, as is well known around these parts, T-Mobile focused almost exclusively on urban areas, leaving most rural and highway coverage in the GSM stone age. Those sites did not receive advanced backhaul, and that is the big difference between T-Mobile and Network Vision enhanced Sprint. I would not go so far as to say rebuked. But consider yourself rebutted. AJ

Based on the updated thread title, instead of an iPhone, maybe you should have gotten your daughter a Gangsta Bitch Barbie. http://www.nbc.com/saturday-night-live/video/gangsta-bitch-barbie/n10728/ AJ

T-Mobile's problem is establishing sufficient backhaul to all of those rural sites. Commend Sprint for not taking the easy way out, for going the extra mile and extending next generation backhaul to its rural sites alongside all others in one Network Vision fell swoop. AJ

From the Google Play Store, it is T-Mobile Tower Spotter. AJ

Well, I am not sure why I did not think of this previously, but maybe the most salient objection to a TDD 600 MHz band plan is rural coverage. In a TDD airlink, since the uplink and downlink are not separated by frequency, they must be separated by time -- including a very important guard period in between all uplink and downlink time slots. Otherwise, transmitter and receiver operating at the same frequencies overlap, and the results are catastrophic. So, the guard period is the time in between slots that both transmitter and receiver shut down. Then, due to the speed of light, the length of the TDD airlink guard period determines the maximum coverage distance -- regardless of signal strength. For example, Clear WiMAX, which is a TDD airlink, is limited to a radius of 8.35 km. Now, that maximum coverage distance is arguably more than fine for BRS/EBS 2600 MHz spectrum. But a similar limitation would prove problematic for 600 MHz spectrum deployed in rural areas. AJ

Meh, globalism is just as bad, if not worse. It brings us such wonderful things as price dumping, offshoring, lax labor and/or environmental regulations, etc. Americans need to lose the love affair with cheaply made foreign products and pay a bit more for domestically made products. The end result would be a stronger economy with better wages at the lower end of the scale. But most American consumers are stupid and short sighted, cannot see the forest for the trees. So, a little bit protectionism -- economic planning from well educated people who actually know that they are doing -- is in order. Otherwise, "South Park" is right, and a huge percentage of this country is eventually going to find itself unemployed due to globalism. AJ

No, no, no, you are playing with revisionist history, Ryan. For background, read this article: http://en.wikipedia.org/wiki/APT_band_plan_in_the_700_MHz_band The FCC put the wheels in motion for 700 MHz mobile use fully 15 years ago. None of what is happening now -- as the Eurasians are just finally getting around to it -- could have been anticipated. Plus, much of the rest of the world differs greatly in its TV spectrum allocations. So, as I have said before, the rest of the world more often needs to follow the spectrum planning of still the most important country on the planet. But the Eurasians seem to like to wait and see, then stick it to the Americans. As for international roaming compatibility, I could basically not care less. It is a red herring for nearly all of the US population nearly all of the time. Not to mention, local differences can serve as protectionism that is good for the national economy. It served Japan with PDC for many years. And, for example, the Motorola/Google X phone is supposed to be built in the US. AJ

No. The level of detail here at S4GRU is not found anywhere else among the other big three operators. AJ

You just got "Rickrolled"! AJ

Use TmoMaps.com. AJ

On the serious side, yes, while the LTE 1900 and LTE 800 carriers will generally be the same 5 MHz FDD bandwidth, the LTE 800 carrier will probably provide moderately faster data speeds because of at least two factors: greater signal strength and lighter loading -- the latter due to fewer compatible devices initially. AJ

Is this the Dr. Ruth forum? AJ

Yes. The sectors are effectively like separate sites. But they just happen to be located on the same structure together. AJ

Yes, both the HTC and Motorola handsets support SVLTE but not SVDO -- as expected by this point. AJ

You mean Vital by ZTE. And, Josh, do you have any info on the Sprint variant Motorola handset that hit the FCC OET about two weeks ago? I encountered it earlier tonight. AJ