[amsat-bb] Re: AO-40 frequency chart

[Yoshihiro Imaishi <imaishi@xxxxxxxxxxxx>]

Hello this is yoshi.

At 2000/12/03 14:13:58 Larry Toulch wrote:
> I notice on VHF there is 150 kHz
> of bandwidth and on UHF there is
> 250 kHz of bandwidth. shouldnt
> both bands have the same tuning
> range ?

  Maybe it is depend on the mode.

            Analog Uplink                Analog Downlink
15m     21.210 -   21.250  (40KHz)             none
12m     24.920 -   24.960  (40KHz)             none
2m     145.840 -  145.990 (150KHz)    145.805 -   145.955 (150KHz)
70cm   435.550 -  435.800 (250KHz)    435.475 -   435.725 (250KHz)
23cm  1269.250 - 1269.500 (250KHz)             none
      1268.325 - 1268.575 (250KHz)
13cm  2400.350 - 2400.600 (250KHz)   2400.225 -  2400.475 (250KHz)
      2446.450 - 2446.700 (250KHz)   2401.225 -  2401.475 (250KHz)
6cm   5668.550 - 5668.800 (250KHz)             none
3cm             none                10451.025 - 10451.275 (250KHz)
1.5cm           none                24048.025 - 24048.275 (250KHz)

  The band 70cm and above have 250KHz passband width, but at
15,12,2m there is not enough space. I do not know which edge
will be used for converting - bottom or high. 

  We should wait for future information.

  I hope that the IF matrix system have ability that can arrenge
convertions like this below. It is just joke. :-)

  Uplink      Downlink
  21.210  ->  435.475      * put 3 bands uplink together
    ::           ::          into 1 wide band downlink
  21.250  ->  435.515        at the same time.
                 ::   
  24.920  ->  435.525 
    ::           ::   
  24.960  ->  435.565 
                 ::   
 145.840  ->  435.575 
    ::           ::   
 145.990  ->  435.725 


Yoshihiro Imaishi JF6BCC/KH2GR
mailto:imaishi@aa.mbn.or.jp  
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