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Science Forum Index » Electronics - Design Forum » Cellphone Reception/Transmission...
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| D from BC... |
 Posted: Wed Jun 25, 2008 10:00 pm |
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I had lots of dropped calls and blanks when I was using my cellphone
near the BC/US border.
I noticed that my phone would sometimes go into roam mode.
I guess a US cell tower and a BC cell tower were competing for my
phone.
I was told that if I faced away from the US border, my cellphone would
connect to the BC cell tower and not the US tower. I'm trying to avoid
roaming charges especially when I'm still on my side..
Are cell phones omnidirectional or have directivity?
D from BC
British Columbia
Canada |
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| Dave Platt... |
| Posted: Wed Jun 25, 2008 11:54 pm |
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Quote: Are cell phones omnidirectional or have directivity?
They're probably fairly close to omnidirectional, when in free space
(i.e. not shielded by other objects). Their actual pattern is
probably rather irregular and varies quite a bit from one phone to the
next.
Quote: I was told that if I faced away from the US border, my cellphone would
connect to the BC cell tower and not the US tower. I'm trying to avoid
roaming charges especially when I'm still on my side..
That's probably what's referred to as a "body fade". Since you're
holding the cellphone near your head, your head will shield the
cellphone to some extent from signals arriving from one direction.
--
Dave Platt <dplatt at (no spam) radagast.org> AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
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