[amsat-bb] Re: Arissat-1 Commanding?
lucleblanc6 at videotron.ca
Fri Aug 5 13:54:59 PDT 2011
On 5 Aug 2011 at 14:03, Burns Fisher wrote:
Date sent: Fri, 05 Aug 2011 14:03:56 -0400
From: Burns Fisher <burns at fisher.cc>
Subject: [amsat-bb] Arissat-1 Commanding?
To: amsat-bb at amsat.org
> I saw on one of the NASA announcements that the snarffled 70cm antenna would
> mean no commanding of the bird. (This was probably before it was realized
> that that receive actually seems to work). But the question I have is
> whether there IS some commanding of the bird possible. I guess you have to
> be able to turn it off to satisfy the FCC (true?) but can other things be
> done? I assume/home that the command channel is encrypted, so disclosing
> its existance is not compromising the bird.
> 73, Burns W2BFJ
As per my and other linear transponder test signal pass through but they are not too strong even if some report seems to confirm 1 watt
power their EIRP is unknown assuming the command channel is on UHF but you know the word "assume" definition:)
Luc Leblanc VE2DWE
DSTAR urcall VE2DWE
WAC BASIC CW PHONE SATELLITE
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