I observed the 2.4GHz frequencies from AO-40 and UO-11.

[26 May 2002]

AO-40 (2401.323MHz)
UTC        IF         Observed    Shifted     Predicted   Differed
01:35:00   145.3424   2401.3424   2401.3434   2401.3386   +4.8kHz
01:36:00   145.3425   2401.3425   2401.3435   2401.3387   +4.8
01:37:00   145.3426   2401.3426   2401.3436   2401.3388   +4.8
02:40:00   145.3483   2401.3483   2401.3493   2401.3443   +5.0
02:41:00   145.3484   2401.3484   2401.3494   2401.3444   +5.0
02:42:00   145.3485   2401.3485   2401.3495   2401.3445   +5.0

UO-11 (2401.500MHz)
UTC        IF         Observed    Shifted     Predicted   Differed
04:56:30   145.5513   2401.5513   2401.5523   2401.5508   +1.5kHz
04:57:30   145.5487   2401.5485   2401.5495   2401.5480   +1.5
04:58:30   145.5435   2401.5435   2401.5445   2401.5430   +1.5
04:59:30   145.5340   2401.5340   2401.5350   2401.5335   +1.5
05:00:30   145.5175   2401.5175   2401.5185   2401.5173   +1.5

where,  Shifted  = Observed + Audio_frequency(ie, 1kHz USB)
        Differed = Shifted  - Predicted_frequency

These predicted frequencies are calculated by using WinTrak (Paul E.Traufler)
for US use, and Calsat32 (Masanori Aida / JR1HUO) for JPN use.
These predicted frequencies contain some Doppler shift.

(US)  http://home.hiwaay.net/~wintrak/
(JPN) http://www.geocities.co.jp/Technopolis-Mars/8632/


[3rd Jun 2002]

AO-40 (2401.323MHz)
UTC        IF         Observed    Shifted     Predicted   Differed
03:09:00   145.3635   2401.3635   2401.3645   2401.3577   +6.8
03:10:00   145.3637   2401.3637   2401.3647   2401.3579   +6.8
03:11:00   145.3639   2401.3639   2401.3649   2401.3581   +6.8
03:12:00   145.3641   2401.3641   2401.3651   2401.3582   +6.9
03:13:00   145.3643   2401.3643   2401.3653   2401.3584   +6.9

UO-11 (2401.500MHz)
UTC        IF         Observed    Shifted     Predicted   Differed
04:49:00   145.5507   2401.5507   2401.5517   2401.5500   +1.7
04:50:00   145.5479   2401.5479   2401.5489   2401.5472   +1.7
04:51:00   145.5432   2401.5432   2401.5442   2401.5425   +1.7
04:58:00   145.4549   2401.4549   2401.4559   2401.4532   +2.7
04:59:00   145.4519   2401.4519   2401.4529   2401.4502   +2.7
05:00:00   145.4502   2401.4502   2401.4512   2401.4485   +2.7

where,  Shifted  = Observed + Audio_frequency(ie, 1kHz USB)
        Differed = Shifted  - Predicted_frequency

and I calculated these predicted frequencies by using Calsat32
for JPN use.

Consequently it seems like the MB frequency from AO-40 is about
2401.327 MHz.

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