Hi Domenico,
I could be wrong but I think your budget is correct for a regenerative transponder but for a bent pipe transponder we need to add the uplink noise to the downlink noise where C/N (total) = 1/((1/C-Nup)+(1/C-Ndn)) which in this case would be about 6.7 dB. Still pretty good, but would probably be better even at the lower microwave freqs. If we used PSK31 exlusively, even 2.5 KHz many simultaneous QSO's. Howie AB2S _________________________________________________________________ Insert movie times and more without leaving Hotmail®. http://windowslive.com/Tutorial/Hotmail/QuickAdd?ocid=TXT_TAGLM_WL_HM_Tutorial_QuickAdd_062009 _______________________________________________ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
