[Land-speed] IN Car Communications

[Larry Mayfield]

Mike, come on, now, Ya'll are pullin' my leg, aint ya? My N router runs 
it's carrier at either 2.4 GHz or 5 GHz (maybe it is 5.8 GHz)  So the 
lambda for the frequency (I think that is the tern for length of the 
wave) would be at 2.4 GHZ  is 0.40982 ft. At 70 mph the distance in on 
elambda is 0.000000004 ft. Add that to the base lambda to see the 
frequency shift or doppler effect  and the new wave length in ft is 
0.40982004 ft.  The frequency shift is so small that it barely moves, 
even out to at least 4 decimal places.

Now, I gotta be honest. I really do not know what I am doing here with 
this, so have you calculated the actual doppler shift to see how much of 
a change it really is?

Was anything else going on at the same time?Or is it like usual, I have 
my head up my anal orifice, lol...

mayf


______________________________
drmayf
Worlds Fastest Sunbeam, period.
204.913 mph flying mile
210.779 mph exit speed


On 1/19/2012 11:25 AM, Meierle, Michael D (Mike) wrote:
> WiFi doesn't work at over 70 MPH.
>
> Had a Train application for downloading the manifest as it rolled into a yard using WiFi, The Doppler changes to the frequency as the train approaches a access point, passes it,  and then goes away from it, is too much variation over a short time to accurately recover the data.
>
> Sitting still, It works fine.
>
> MIKE MEIERLE
> SR. SYSTEMS ENGINEER
> ALCATEL-LUCENT
> 7751 Windsor Drive
> Dublin, Ohio 43016
> (614) 284-6229
> mike.meierle at alcatel-lucent.com
>
> -----Original Message-----
> From: land-speed-bounces at autox.team.net [mailto:land-speed-bounces at autox.team.net] On Behalf Of Skip Higginbotham
> Sent: Thursday, January 19, 2012 1:47 PM
> To: drmayf at mayfco.com; land-speed at autox.team.net
> Subject: Re: [Land-speed] IN Car Communications
>
> How about using the WIFI that Jon (I think) has in the salt plan for next
> year and communicate that way. I have a fairly good (20 db) WIFI antenna on
> my RV that has about a 3 mile range with little or no interference. It is
> really useful at RV parks with limited/no connectivity. I wonder how it
> would work if positioned mid course. Could transmit data, video and voice?
>
> How to set it up??????
>
> Skip