nissan wireless cars - Page 2

mr_wlan · 06-10-2002

mmmmm, someone said that they loose the ability to chat over wlan at 50mph - well I routinely run a wlan sniffer in the car when driving on motorways at 70+ MPH and I pick up the same 50 or 60 ap's that are within range. Admittedly I'm using a amplified receive only antenna with kismet / WSA but that shouldnt make much difference.

regards,

mr_wlan

jeffrowe · 06-11-2002

Exactly what rules apply to dishes for specific frequencies?

I am wondering what diameters of collapsable strainer woudl be needed for a proper 2.4 dish... or would the size of the dish part be less an issue than the size/etc of the feeder part?

I am thinking of modifying one of these with a Servo and some mods so it is self opening and such. Have the ability to change its focus ratio or close it all together... then give it rotation up and down and, say be modified X10 Ninja pan/tilt... could be interesting...

Thorn · 06-11-2002

jeffrowe,
Get the ARRL antenna book. The feed horn size is critical, I think, but the dish size does make some difference.

blazer34i · 06-24-2002

Quote:

Originally posted by Madhadder
On the way up the Hannover for CEBIT 2002, my friends
and I tried this out...

Now we had been told that WLAN connections will work
on moving cars at up to 40-50mph but loose the signal
after that. Well It got me thinking that maybe they were
correct IF the AP was fixed at a certain location, but what
would happen if both the AP and the clients were moving
at 40-60mph or faster.....

I guess as long the AP's were the same distance from each other, you were going slower than the speed of light and in a vacuum it wouldn't matter how fast you were going..

lullabud · 06-24-2002

curious... how can 2 things not be the same distance from each other?

blackwave · 06-24-2002

Quote:

Originally posted by lullabud
curious... how can 2 things not be the same distance from each other?

Perhaps we are talking about AP_1 at the event horizon and AP_2 approaching the singularity.

lullabud · 06-25-2002

at any given time the distance from point a to point b is not different from point b to point a. it's the same distance reguardless of how many dimensions you're measuring in.

blackwave · 06-25-2002

Quote:

Originally posted by lullabud
at any given time the distance from point a to point b is not different from point b to point a. it's the same distance reguardless of how many dimensions you're measuring in.

Using this:
AP_1 at the event horizon and AP_2 approaching the singularity

if AP_1 were at location X, and AP_2 were at location Z, it is possible that AP_1 would be reporting back a distance of U,
while AP_2 would be reporting back a distance of V, where U!=V.

I haven't tried this myself... yet, so take it for face value.

lullabud · 06-25-2002

distance is absolute no matter how you measure it.

blackwave · 06-26-2002

Quote:

Originally posted by lullabud
distance is absolute no matter how you measure it.

You keep saying that, so I am guessing you are being serious. I on the otherhand am not.

06-10-2002	#16 (permalink)
mr_wlan Registered Member Join Date: Apr 2002 Posts: 40	network detection at speed mmmmm, someone said that they loose the ability to chat over wlan at 50mph - well I routinely run a wlan sniffer in the car when driving on motorways at 70+ MPH and I pick up the same 50 or 60 ap's that are within range. Admittedly I'm using a amplified receive only antenna with kismet / WSA but that shouldnt make much difference. regards, mr_wlan

06-11-2002	#17 (permalink)
jeffrowe Registered Member Join Date: Apr 2002 Location: Northern Suburbs, Chicago, IL Posts: 142	hmm, back to the Strainer Dish thing Exactly what rules apply to dishes for specific frequencies? I am wondering what diameters of collapsable strainer woudl be needed for a proper 2.4 dish... or would the size of the dish part be less an issue than the size/etc of the feeder part? I am thinking of modifying one of these with a Servo and some mods so it is self opening and such. Have the ability to change its focus ratio or close it all together... then give it rotation up and down and, say be modified X10 Ninja pan/tilt... could be interesting... __________________ -Jeffrowe

06-11-2002	#18 (permalink)
Thorn Did you do the math? Join Date: Apr 2002 Location: Villa Straylight Posts: 10,084	jeffrowe, Get the ARRL antenna book. The feed horn size is critical, I think, but the dish size does make some difference. __________________ Thorn "I'm The Doctor. I'm a Time Lord. I am from the planet Gallifrey in the constellation Kasterborous. I'm 903 years old and I am the man who is going to save your lives and all 6 billion people on the planet below... You got a problem with that?"

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06-24-2002	#20 (permalink)
lullabud Registered Member Join Date: Apr 2002 Location: Silicon Valley Posts: 261	curious... how can 2 things not be the same distance from each other?

06-25-2002	#22 (permalink)
lullabud Registered Member Join Date: Apr 2002 Location: Silicon Valley Posts: 261	at any given time the distance from point a to point b is not different from point b to point a. it's the same distance reguardless of how many dimensions you're measuring in.

06-25-2002	#24 (permalink)
lullabud Registered Member Join Date: Apr 2002 Location: Silicon Valley Posts: 261	distance is absolute no matter how you measure it.