Active Topics
-
[ANNOUNCE] MeeShop - new app store (8)
to Applications by Maemish - 4 hrs, 3 mins ago -
HTTP-401 Sfos-Builder when using /etc/ssu credentials (0)
to SailfishOS by insanelysexy - 8 hrs, 33 mins ago -
Longtime users: What device(s) are you using today? (54)
to General by ryu1 - 2 days, 13 hrs ago -
Registering (1)
to General by Halftux - 5 days, 6 hrs ago -
Applications Wishlist (55)
to Maemo 7 / Leste by sixwheeledbeast - 6 days, 8 hrs ago - more...
|
2010-11-27
, 06:58
|
|
Posts: 671 |
Thanked: 1,630 times |
Joined on Aug 2010
|
#32
|
https://svn.berlin.ccc.de/projects/airprobe/
__________________
Three n900s: One for stable working platform,
One fordevelopment testing Chopping Onions
One forsaltwater immersion power testing resurrected ! parts scavenging
My Mods for Wonko's Advanced Clock Plugin:
ISO8601 clock mod and Momental_IST clock mod
Printing your Email with the N900
Three n900s: One for stable working platform,
One for
One for
My Mods for Wonko's Advanced Clock Plugin:
ISO8601 clock mod and Momental_IST clock mod
Printing your Email with the N900
|
|
2010-11-27
, 07:09
|
|
Posts: 671 |
Thanked: 1,630 times |
Joined on Aug 2010
|
#33
|
Originally Posted by TiagoTiago
Not necessarily stronger - you get 10mw and 100mw for wifi
Is the GSM radio stronger than the WiFi radio both for transmitting and receiving?
and probably the same for GSM
The difference is that wifi is 2400mhz mostly Line of Sight
(think of signals reflected off of walls)
whereas
GSM has a band down at 900mhz which means the signal can
penetrate many more things. like leaves on trees, walls, etc.
I have stood in open areas and used my n900 wifi from
2km to one of our ubiquiti towers (bullet2hp with a 15db omni),
but I needed the 100mW setting to get a reliable connection
Compare that to getting a BTS signal at nearly 50km distance
GSM 900 is orders of magnitude better for getting long-range
communications.
It is looking like it is also orders of magnitude more difficult to hack.
Given the powerful potential in the world of having GSM phones
which could simply talk to each other without paying tribute
to the Telco overlords, it is easy to see why handphone
manufacturers are bribed and threatened away from putting
this simple feature in their handsets.
But hey, if it can be done at all, it could only be done on the n900.
It would be impossible to do it on any kind of Android machine, ever.
__________________
Three n900s: One for stable working platform,
One fordevelopment testing Chopping Onions
One forsaltwater immersion power testing resurrected ! parts scavenging
My Mods for Wonko's Advanced Clock Plugin:
ISO8601 clock mod and Momental_IST clock mod
Printing your Email with the N900
Three n900s: One for stable working platform,
One for
One for
My Mods for Wonko's Advanced Clock Plugin:
ISO8601 clock mod and Momental_IST clock mod
Printing your Email with the N900
| The Following User Says Thank You to theonelaw For This Useful Post: | ||
|
|
2010-11-27
, 08:31
|
|
Posts: 1,998 |
Thanked: 3,344 times |
Joined on Jun 2010
@ N900: Battery low. N950: torx 4 re-used once and fine; SIM port torn apart
|
#34
|
Originally Posted by theonelaw
One more link...
Not necessarily stronger - you get 10mw and 100mw for wifi and probably the same for GSM
The difference is that wifi is 2400mhz mostly Line of Sight
(think of signals reflected off of walls)
whereas GSM has a band down at 900mhz which means the signal can
penetrate many more things. like leaves on trees, walls, etc.
I have stood in open areas and used my n900 wifi from 2km to one of our ubiquiti towers (bullet2hp with a 15db omni), but I needed the 100mW setting to get a reliable connection
Compare that to getting a BTS signal at nearly 50km distance
GSM 900 is orders of magnitude better for getting long-range communications.
It is looking like it is also orders of magnitude more difficult to hack.
Given the powerful potential in the world of having GSM phones
which could simply talk to each other without paying tribute
to the Telco overlords, it is easy to see why handphone
manufacturers are bribed and threatened away from putting
this simple feature in their handsets.
But hey, if it can be done at all, it could only be done on the n900.
It would be impossible to do it on any kind of Android machine, ever.
http://en.wikipedia.org/wiki/MOTO_Talk
| The Following User Says Thank You to Wikiwide For This Useful Post: | ||
|
|
2010-11-27
, 09:04
|
|
Posts: 671 |
Thanked: 1,630 times |
Joined on Aug 2010
|
#35
|
Originally Posted by Wikiwide
Now that is what could be extremely useful.
One more link...
http://en.wikipedia.org/wiki/MOTO_Talk
Key points from the page:
... signals are sent directly from one handset to another, without using the cellular network. And it uses the 900 MHz ISM band...
That is what we are after
...The effective range can be in excess of 6 miles, but the frequencies used are line-of-sight and are blocked by structures and vegetation. Practical ranges are usually 1 to 2 miles...
That is possibly due to their use of FHSS
...It uses FHSS technology on the 900 MHz ISM band as an unlicensed transmitter...
And FHSS may not be as good as some other strategies
for dealing with noise and distance.
Depending on the radio we could see better or worse,
but this is definitely what we should be able to do
with the hardware, if it is capable and if we could only find the APIs.
It is for certain in nokia-binaries that this is to be found,
but I am not kitted up to hack into that right now.
__________________
Three n900s: One for stable working platform,
One fordevelopment testing Chopping Onions
One forsaltwater immersion power testing resurrected ! parts scavenging
My Mods for Wonko's Advanced Clock Plugin:
ISO8601 clock mod and Momental_IST clock mod
Printing your Email with the N900
Three n900s: One for stable working platform,
One for
One for
My Mods for Wonko's Advanced Clock Plugin:
ISO8601 clock mod and Momental_IST clock mod
Printing your Email with the N900
| The Following User Says Thank You to theonelaw For This Useful Post: | ||
|
|
2010-11-27
, 14:00
|
|
Posts: 1,522 |
Thanked: 392 times |
Joined on Jul 2010
@ São Paulo, Brazil
|
#36
|
There is hardly any "DRM" out there that can't be beat, why is it taking so long for the blobs in the N900 to be twisted to our will?
__________________
NOKIA N900: IT'S OVER NINE THOUSAND
How to use HotspotShield in the N900
Google Voice from outside the US + Free international calls: LEARN HOW HERE!!!
NOKIA N900: IT'S OVER NINE THOUSAND
How to use HotspotShield in the N900
Google Voice from outside the US + Free international calls: LEARN HOW HERE!!!
| The Following User Says Thank You to TiagoTiago For This Useful Post: | ||
NOKIA N900: IT'S OVER NINE THOUSAND
How to use HotspotShield in the N900
Google Voice from outside the US + Free international calls: LEARN HOW HERE!!!