+- PINE64 (https://forum.pine64.org)
+-- Forum: PinePhone (https://forum.pine64.org/forumdisplay.php?fid=120)
+--- Forum: PinePhone Hardware (https://forum.pine64.org/forumdisplay.php?fid=122)
+--- Thread: Pinephone SAR (/showthread.php?tid=8131)
Pinephone SAR - vituous - 10-24-2019
I know the modem has already been picked out, that is was designed for machine to machine communication, and that it has a fairly large range of acceptable power input(not relatively but just by the numbers it seemed to me to be the case). I know lots of companies these days(Samsung and maybe LG) direct the radio waves away from the head(decreasing the head SAR ratings but seemingly increasing the body SAR ratings) and lower the power to the transmitter when the proximity sensor "senses" it is near to someone's head(seemingly as a way to get around FCC guidelines: bad stuff). My questions are simple and I hope there are answers.
1. How will the Pinephone radiation levels compare to popular phones today?
2. Does the chosen modem allow control over transmitter power levels?
3. Is there foreseen support for limiting transmit power in any of the supportive OSs?
4. Is there atleast foreseen support for disabling certain bands?
5. Is there atleast atleast foreseen support for disabling protocols(2G, 3G)?
6. This is a bonus question for anyone who can help me: why does it seem like phones who score well in the FCC SAR tests seem to do poorly on the EU SAR tests and vice versa?
Note: I would love control over the transmitter. As in a setting to stop trying to connect to cell towers if there is less than 'x' bars. This would be good for battery as well so the phone is not screaming areas with low coverage.
Note 2: I asked in Q1 how they compare because I know hard numbers are hard and that the US/CAN/AUS have different tests you have to do than in the EU(they both have head and body tests, but the watts/kg or whatever is different).
Note 3: My current laptop's touch-pad is such an EMF offender my fm radio picks up a horrid buzzing noise from 87.5 to ninety-something(if the antenna is close). Hopefully the PBP(or just a RockPro64) contains its current better and doesn't constantly make high pitched noises.
RE: Pinephone SAR - bcnaz - 10-29-2019
*
Using a directional transmitting antenna could Greatly Reduce the radiation emitted towards the user.
It would require the user to point the antenna at the tower, but it could also increase the useful range by a Great distance.
It might require some modification to the software, as your phone may need to turned for the antenna to be pointed at the tower to answer the call... todays phone and cell tower software requires duplex communications at all times to receive a call.
( > The old radio phones would let you know you had an incoming call, you would respond by hitting the transmit button. )
( Usually that was sufficient, but sometimes you would need to move to another position, or turn up 'your power' to complete the call. )
RE: Pinephone SAR - cicero - 04-26-2020
Now that there are FCC/CE certifications, are there SAR ratings (head/body) available for the PinePhone?
RE: Pinephone SAR - bcnaz - 04-30-2020
GREAT QUESTION !
Regardless if they are certified or not, I would HOPE they could give us some readings on this.. ?