Hi John, W0JAB

On AO40 you should remember at least the spin fading due to the tumbling of AO40 i.e. the 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@big-river.net To: amsat-bb@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