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To: driftdiver
Then you should know cell phones have a tx and a rx. The post I was responding to was claiming iPhones have strong signals.

Where is your data? If you are claiming that Iphones don't have strong signals what is your evidence?

48 posted on 07/03/2010 9:29:12 AM PDT by LeGrande (Yes, I am an agent of Satan, but my duties are largely ceremonial.)
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To: LeGrande; TXnMA

“Where is your data? If you are claiming that Iphones don’t have strong signals what is your evidence?”

Hey IDIOTS, thats why I asked the question. The statement was made that iPhones have stronger signal strength. I asked for some kind of measurements. You liars try to turn it around once again attacking the messenger who threatens your precious little religion.

Cell phones have a receiver and a transmitter. The new iphone also has a external antenna which is affected by how you hold it. All the lies and twists of logic won’t turn that around.

Take you POS attitudes, personal attacks and hate and jump in a lake. Preferably one filled with run off from a pig farm.


51 posted on 07/03/2010 10:03:13 AM PDT by driftdiver (I could eat it raw, but why do that when I have a fire.)
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To: LeGrande; driftdiver
At 1900 MHz the FCC limits you to 1W maximum output; at 850 MHz it is 1.5W. Most cell phones will transmit up to that power level if required to maintain channel SNR (QOS measurements in-channel to determine required TX power levels or if another cell is better suited for use).

Now let's look at the receive signal attenuation again:

Theoretically, when held naturally, I could use 125mW output from the Nexus One and have the same total channel SNR (TX plus RX) as the iPhone 4 at 1W output, due to the attenuation of the iPhone 4's RX sensitivity. That is a not-inconsequential difference.

It's also interesting to note that the least sensitive phone has the antennas external; those with internal antennas have higher sensitivity. I wonder if this is because of the use of shielding against the front of the phone, creating a ground plane for enhanced directivity of the antennas?

I'd expect a 4-6 dB increase in RX sensitivity from a half-space measurement versus a full-space measurement, and that would be equivalent to an internal antenna with full ground plane behind versus an external antennas on edge without ground plane.

67 posted on 07/03/2010 7:00:36 PM PDT by PugetSoundSoldier (Indignation over the Sting of Truth is the defense of the indefensible)
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