Re: [amsat-bb] Aircraft Doppler?

["jmfranke" <jmfranke@xxxxxxx>]

I have sent the calculation for when the transmitter and receiver are 
located at the same point.  The case is different if the receiver and 
transmitter are not co-located.  The solution is more complex, but the 
process is the same, compute the change in distance in mph and apply the 
factor of 0.429 Hz/mph for a 144 MHz signal.

John WA4WDL

----- Original Message ----- 
From: "KT2Q" <dxdx@optonline.net>
To: <AMSAT-BB@amsat.org>
Sent: Saturday, November 19, 2005 12:55 PM
Subject: [amsat-bb] Aircraft Doppler?


> All:
>
> What is the maximum aircraft doppler shift expected on 2 meters from an 
> aicraft moving at 200, 300 and 500 mph with the aircraft posistion at a 
> distance of 5, 10 and 20 miles?
>
> An example of the calculation would be appreciated.
>
> Thanks,
>
> Tony KT2Q
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