[amsat-bb] Re: The Mode B tradition, was Re: The Eagle has died.
John B. Stephensen
kd6ozh at comcast.net
Thu Sep 14 14:35:40 PDT 2006
All phase 3 satellites have had computers onboard the so this is not a new
issue. AMSAT-NA tests processors that it uses by irradiating them to prove
that they will be reliable in orbit. Also, a series of components connected
on a semiconductor die is much more reliable than a series of components
connected on a PCB.
----- Original Message -----
From: <G0MRF at aol.com>
To: <brobertson at mta.ca>; <amsat-bb at amsat.org>
Sent: Thursday, September 14, 2006 21:04 UTC
Subject: [amsat-bb] Re: The Mode B tradition, was Re: The Eagle has died.
> In a message dated 14/09/2006 15:56:15 GMT Standard Time, broberts at mta.ca
>> 73" de
>> i8CVS Domenico
> Happily, two of the three birds you mention above, AO-7 and VO-52, are in
> exactly the mode that analog Eagle users will be using, U/V. As I
> understand it, the plan is to have this link working 24/7. (Yes it will
> primarily use a software-driven transponder, but that will be transparent
> to the analog user.) In this regard, I can't see how the design
> team can be accused of unnecessarily innovating.
> 73, Bruce
> Hello Bruce / Dom.
> I agree, the UV on Eagle will be apparently analog (ue) to the casual
> But be aware Bruce that it's not "primarily" a software driven
> It is in fact TOTALLY software driven. There is no linear IF, just DSP
> the core. Or from another viewpoint 100,000 single point failures just
> waiting to happen.
> David G0MRF
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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