[amsat-bb] Re: FUNcube telemetry performance?
jfitzgerald at alum.wpi.edu
Sun Apr 20 19:53:26 PDT 2014
Yes, Domenico, but AO-40 gets better in my memory with each passing year.
Perhaps that is why it _seems_ like some of the frames I hear from Funcube
should decode when they don't.
> Hi John, W0JAB
> On AO40 you should remember mostly the fading due of
> spin modulation...... WOW..........WOW.............WOW......
> because of rotation of the satellite over the Z axis ! !
> 73" de
> i8CVS Domenico
> ----- Original Message -----
> From: "John Becker" <w0jab at big-river.net>
> To: <amsat-bb at amsat.org>
> Sent: Sunday, April 20, 2014 12:42 AM
> Subject: [amsat-bb] Re: FUNcube telemetry performance?
>> I guess I was lucky I dont recall any fading with AO 40.
>> On 4/19/2014 4:33 AM, Phil Karn wrote:
>> > I haven't done anything with AO-73, but I understand it's transmitting
>> > the FEC format I originally designed for AO-40.
>> > How well is it working? What fraction of the frames are successfully
>> > decoded? How bad is the fading? I designed my format specifically for
>> > the spin fading on AO-40, and if the fading due to the tumbling of a
>> > cubesat is too slow my format won't be able to fix it.
>> > Phil
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