[amsat-bb] Re: ARISSat over UK - 23.46utc Pass
david.barber at dbelectronics.co.uk
Wed Aug 3 17:42:53 PDT 2011
Using a vertically polarised beam here.
Deep double nulls.
Occurring approximately every 4 to 5 seconds.
Duration probably no more than 1.5 seconds.
I do have a wave file if you want it but it is 16mB in size.
From: Phil Karn [mailto:karn at philkarn.net]
Sent: 04 August 2011 01:27
To: david.barber at dbelectronics.co.uk
Cc: amsat-bb at amsat.org
Subject: Re: [amsat-bb] ARISSat over UK - 23.46utc Pass
On 8/3/11 5:11 PM, David Barber wrote:
>>From the sound of the signal the satellite would appear to be tumbling
Are there any deep nulls in the fading? If so, how long are they?
I designed the interleaving to tolerate deep fades of up to about 1-1.5
seconds as long as they don't occur more often than about once every 15
sec or so. Shorter fades can be tolerated more often.
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