WiWavelength

Is she from Chattanooga? AJ

No, actually, it is not a myth. Qualcomm QSC family chipsets include both modem and radio transceiver on the same chipset, while other Qualcomm chipsets interface with a separate radio transceiver (e.g. WTR1605). That said, "radio" is often colloquially used synonymously with "modem," as separate radio transceivers do not get a lot of discussion. AJ

Par for the course, Josh. You just described practically every cellphone manufactured in the last 10 years. AJ

Negative. The EVO Shift is approved for CDMA1X 850/1900 + WiMAX 2600. AJ

fubka, the "CDMA 800" capability in that 10 year old Samsung is what we now refer to as CDMA 850. In other words, it is the Cellular band, not the SMR band. AJ

I would also add that I noted in a recent FCC filing that LTE band class 26 (superset of 800/850 MHz band classes 5, 6, 18, 19) has been ratified as of March 1. Sprint's initial batch of LTE handsets, though, were already locked in by that point. AJ

This is the most compelling hypothesis about LTE 800 device support (or lack thereof). And, to corroborate the hypothesis, the Sprint Network Vision roadmap has LTE 800 and LTE Advanced carrier aggregation coming online at approximately the same time. Coincidence or not? AJ

If it is on the ground, then it is no longer an RRU. AJ

You do everyone a disservice with your insistent pessimism about broadband operation within ESMR of the SMR 800 MHz band. On the contrary, the wheels are already in motion for FCC approval. Please see the article that we published a month ago, the FCC proposed rulemaking, and the two relevant FCC dockets: http://s4gru.com/ind...band-operation/ http://transition.fc...FCC-12-25A1.pdf http://apps.fcc.gov/...iew?name=11-110 http://apps.fcc.gov/...oro7&name=12-64 Take this to the bank: the FCC will approve ESMR broadband operation (which inherently includes LTE), and it will happen this year. AJ

Most/all LTE Advanced UEs will be carrier aggregation limited to two or three carriers. So, 40 MHz, maybe 60 MHz is likely to be the largest practical downlink. AJ

Wow, Ben measured himself to the hundredth of an inch. Now, that is precision. AJ

No, internal processing is not the purview of the FCC. The FCC is concerned primarily with external radiation. So, typical FCC OET filings make no mention of the the actual baseband radio. AJ

Does the EVO 4G LTE contain an unmentioned second Qualcomm modem so as to enable SVDO? Or does the S4 MSM8960 internally contain multiple radios, such that it can do SVDO by itself? Those are the greater questions right now. AJ

Note to self: never be houseguest of Josh. Might try to kill you. AJ

EV-DO 800 capability is already baked into the chipset, power amp module, and antenna configuration. Locking out the capability would require more work than simply letting it go unused. AJ

Are you being a good host? The least that you could do is play some music for them. AJ

Under good signal conditions, 13K QCELP is still the best sounding codec -- in my opinion. It does not utilize a higher sample rate (still 8 kHz), but its higher bit rate does seem to preserve more higher frequency information than does EVRC. That said, for many years now, few CDMA1X networks allow native subs to use 13K because network operators know that their native handsets are all EVRC capable. Roamers, however, generally get the benefit of the doubt, and the network will honor their specified codec preferences. For example, I have adjusted the codec selection on a VZW handset while roaming on Sprint. With each selection -- 8K QCELP, 13K QCELP, EVRC -- the Sprint network honored the codec preference and set up the call with desired Service Option (SO1, SO32768, SO3). AJ

The fair comparison would be in equivalent spectrum (both in propagation and in bandwidth). And 10 MHz x 10 MHz of Upper 700 MHz spectrum is certainly not equivalent to 10 MHz (or even 5 MHz) of BRS/EBS 2600 MHz spectrum. AJ

Scott, come on -- that is not even a remotely relevant comparison. Honestly, you should know better than that. AJ

That is probably not RSSI but RSRP (or another LTE specific signal strength measure). If RSRP, one conversion factor that I have encountered is to add 14 dB. AJ

It is important to note, however, that EVRC-NW "HD Voice" does not require Network Vision nor CDMA1X Advanced; EVRC-NW is based on the same 9.6 kbps Rate Set 1 as is EVRC. "HD Voice" comes from greater voice data compression, not from higher rate voice data. So, as long as the BSC/MSC has been updated to decode, transcode, or pass EVRC-NW as necessary, then "HD Voice" should be functional even in those markets that Network Vision has not yet reached. AJ

I am not quite sure what you are proposing ("7x3 and then 3x7 with the 7 being the downlink"), but the reality of the situation is that a 10 MHz x 10 MHz FDD block is a 10 MHz uplink paired with a 10 MHz downlink. In FDD operation, the uplink and downlink must be separated to avoid horrible adjacent channel interference that could lead to receiver overload. AJ

As has been stated many times, SVDO is not a network upgrade, so it does not add cost nor divert resources. Rather, SVDO is a device capability, typically enabled through separate modems for CDMA1X and EV-DO. AJ

Eric, do not take this the wrong way, but I think that you need to let this dream die. That Sprint could buy out and/or relocate SouthernLINC, other ESMR licensees, and (most importantly) public safety users is a pipe dream that has no chance of happening within the next 10 years. Public safety rebanding has been such an ordeal and is still ongoing that we will not see another 800 MHz reconfiguration effort for a long time. AJ

No, Sprint holds 14 MHz total -- max 7 MHz x 7 MHz ESMR in the reconfigured SMR 800 MHz band. And, in many markets, Sprint is licensed or has available considerably less than 14 MHz. AJ