[TowerTalk] Fwd: 15m monster finally up - EME and Video

Jim Lux jimlux at earthlink.net
Wed Feb 6 10:41:25 EST 2013


On 2/6/13 7:01 AM, Tõnno Vähk wrote:
> There was no noticable shift. I guess that is the case on HF.
>
> 73
> tonno
>
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Hans Hammarquist
> Sent: Wednesday, February 06, 2013 5:51 AM
> To: towertalk at contesting.com
> Subject: [TowerTalk] Fwd: 15m monster finally up - EME and Video
>
> How much was the frequency shift due to the moon's movement?


Looking at the horizon, the moon is mostly moving normal to the line of 
sight.  The primary Doppler source is likely to be the rotation of 
Earth, which at the equator is about 0.5km/sec

0.5 km/s /300,000 km/s * 21E6 Hz = 35 Hz...

Tonno is not quite at the equator(!), so the Doppler is likely less



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