Quote:
Originally Posted by junior1234
If this is what I think it is ,then actually the change from -81dbm to -84 dbm is actually representing that you just made your receiver twice as sensitive as before so a signal only half as large as what used to be the minimum threshold to make your receiver work is needed
|
I think the confusion here is what does Rx Power represent. Does it represent signal strength or sensitivity? By upping the gain we should by definition increase the power of the signal and, if Rx Power represents signal strength, see a stronger RX power in the debug interface. In this case what is being seen is actually a weaker signal (-84dBm).
However, if Rx Power is actually representing Rx sensitivity then I agree that a lower number will pick up a weaker signal (3dB weaker by definition). In this case we have increased "radio sensitivity" by boosting the power of the signal and will pick up weaker signals as indicated by the drop in Rx Power by 3dBm. I wouldn't call that twice as sensitive, but clearly more sensitive.
Quote:
Originally Posted by junior1234
its not a matter of enabling it you are changing the level at which it operates, and yes battery life would be affected think car amplifier turn up the gain to hear that really poor dubbing in your cd player and yes it will play louder at a lower volume setting on your deck but the reason is because youre overworking the amplifier...theres no such thing as free energy....energy cannot be created nor destroyed only change forms ...so if your phone is using more power its taking it from somewhere...the battery, in order to give you better reception.
|
If the NV_FM_AGC setting is not a 0/1 toggle then I am curious what valid values exist and what they correlate to. Clearly the implication was not that battery life would not be impacted if gain is boosted - rather it was an exploration of why a provider would possibly not enable it by default (as allowing gain to be dynamically adjusted would allow for the best battery by scaling down in areas of strong signal and quality of signal by boosting the signal in areas of low signal - seemingly #1 in both regards for providers).
For what it's worth this was apparently an issue for the Sprint Treo Pro dropping/missing calls (not the GSM version) and was resolved by *upping* the GAIN_OFFSET values all above 3000 from around the values that are being discussed lowering the settings to here.
http://treo.discussion.treocentral.c...d.php?t=180933