🚀 go-pugleaf

On Tue, 13 Jul 2010 14:36:09 -0700, John Navas
<spamfilter1@navasgroup.com> wrote:

>On Tue, 13 Jul 2010 12:11:44 -0700, in
><o3ep36h0p80msjrgp2fs311at59hiu27he@4ax.com>, Jeff Liebermann
><jeffl@cruzio.com> wrote:
>
>>On Mon, 12 Jul 2010 13:54:04 -0700, nospam <nospam@nospam.invalid>
>>wrote:
>>
>>>In article <98L_n.737$o27.20@newsfe08.iad>, John Slade
>>><hhitman86@pacbell.net> wrote:
>>>
>>>>       Yea it's clear from Youtube videos and tests like the one 
>>>> from CR that the iPhone 4 has a hardware problem when it comes 
>>>> to the antenna.
>>>
>>>touch any phone's antenna, watch what happens.
>>
>>Did you actually try it?  I did with several phones that have
>>projecting antennas.  LG VX8000, VX8100, and VX8300 on Verizon
>>(900MHz).  Also, Motorola RAZR V3m.  I can wrap my hand around the
>>antenna and get maybe a -4dB drop (about 1 bar).  A 1900Mhz PCS phone
>>will probably have a larger drop.
>>
>>Might as well try it right now....  Going into field test mode, and
>>making a call.  Rx power = -75dBm.  Wrap my hand around the antenna,
>>and it drops to -78dBm (average).  Not much but enough to drop a call
>>if I'm in a marginal area.  Now, compare that to the iPhone 4 drop of
>>about 30dB.
>>
>>Try it:
>><www.wpsantennas.com/pdf/testmode/FieldTestModes.pdf>
>
>T-Mobile myTouch 3G 3.5mm Jack (aka HTC Magic, Android 1.6)
>No case. Signal strength unaffected by holding it in any
>way I can think of.

Are you using Bars or -dBm?

<http://mytouch.t-mobile.com/mytouch-3g-smartphone-overview>

Ok, go thee unto the Field Test Mode by dialing:
   *#*#7262626#*#*
<http://blog.marc-seeger.de/2008/12/29/android-field-test-mode/>
Find the GSM receive signal strength in -dBM.  Do the hand over the
antenna test.  If I had the FCC ID number, I could find the antenna
from the photos on the FCC ID web pile.  You may need to make a phone
call in order to get the signal levels to move.

Incidentally, dBm stands for "don't blame me" if you brick your phone.

-- 
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558
# http://802.11junk.com               jeffl@cruzio.com
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