[time-nuts] Using GPSDO as a Refrence for Protable Amateur Radio Microwave Operations

jimlux jimlux at earthlink.net
Thu Dec 22 21:10:25 EST 2016

On 12/22/16 5:06 PM, Scott Stobbe wrote:
> The other interesting aspect, is that if the transceiver is mobile, even at
> a lazy pedestrian walking speed of 1 m/s, the resulting Doppler shift is 3
> E-9 deltaF.

I always visualize this as "how many wavelengths per second".. so if 
you're at 10 GHz, 3cm wavelength, 1 m/s is 33 Hz.

to 1 sig fig, 1 m/s = 2 mi/hr

if it's a radar (2 way path) the shift is doubled.

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