Chris-
I have Sprint also. I haven't had any of the problems you are describing,
however, I am in upstate New York, which is not exactly a thriving
metropolis.
I have used my phone in Houston TX, Atlanta GA, and all along I-90 and
I-87 between New York City and Albany and between Buffalo and Boston with
no issues.
Nort of Albany, there is no signal, so the phone falls back to analog
service.
My bottom-line suggestion, get a different model of phone. I have used
the old Sony model (a relabeled Qualcomm QCP-1900) and the Sanyo SCP-3000.
If changing the phone does not change the situation, you may want to
consider going to a standard carrier. In any given market, there are
usually two standard cellular telcos. For example, here in
upstate new york, we have the following carriers:
Carrier                        Band                Mode
Verizon                        Standard        AMPS/CDMA
Cellular One                Standard        AMPS/TDMA
NexTEL                        Industrial        iDEN
Sprint                        PCS                CDMA
Omnipoint                PCS                GSM
AT&T                        PCS                TDMA
AMPS is the analog system. It is trunked FM, and can be heard on some
older scanners. Unencrypted.
CDMA is the system developed by Lucent and Qualcomm. It is spread
spectrum and encrypted.
TDMA is a system that exists for no reason I can see, but uses a single
channel, and the phone and cell take turns transmitting to multiplex that
channel. Encrypted.
GSM is similar to TDMA, but is compatible with phone systems elsewhere in
the world. It is the reason I feel TDMA need not exist, because GSM
existed for years first. Encrypted.
iDEN is proprietary to Motorola, similar to TDMA, but far more spectrally
efficient. It is unencrypted.
Having delivered the bottom line, I would like to suggest the following
items of mitigation:
1. This is still a new technology.
2. The band used by PCS phones is very short wavelength, and as such,
multipath distortion (what would be called echoes if we were dealing with
sound) is a big problem, along with the ease of placing an obstacle
between the phone and the cell.
3. The PCS band is also constrained to very low power. I think it is
50mW, vs 600mW for non-PCS handheld phones, and 3W for non-PCS bag/car
phones.
4. The PCS networks issued in a new age of competition, but at the same
time already lacked that competitive edge, because they were built in far
less time than the non-PCS networks.
On the other hand:
1. Sprint, using CDMA, can get a very high call density per cell.
2. Any cellular phone system, regardless of technology or band, is going
to choke given enough users.
3. Sprint's service has come a long way; I have been a customer of theirs
for four years.
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Glenn C. Lasher, Jr - Senior Engineer, Telecommunications/UNIX/Windows NT
Data Tech Associates, Ltd, 883 Broadway, Albany NY, 518.465.1190
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