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Re: AO 7 Technical data



I might be way off  in my assumption here, but why would it be illegal for us (USA) to uplink to AO-7 in the 432.125-.175 Mhz
portion of the band?
Seems like it would be a same situation as the RS birds using the 15m band for uplinking.  Many of those 15m Ops have no idea
that they are indeed uplinking to a Satellite! 

73 de Mike
KA2AEV/V26R




In a message dated Sun, 23 Jun 2002 1:16:09 PM Eastern Standard Time, MDAVIDOFF@ccbcmd.edu writes:

> 
> 
> AMSAT-OSCAR 7
> 
> Beacons
>      29.502 MHz (200 mw) Used in conjunction with Mode A
>    145.972 MHz (200 mw) Used in conjunction with Mode B and C [low
> power Mode B]
>    435.100 MHz (intermittent problem -- switches between 400 mw and 10
> mw)
>    2304.1   MHz (40 mw) Must be commanded on.  Auto off after 15
> minutes.
>        Requires STA to operate.
> 
> Transponder I:  Mode A  (2m/10m)
>    type: linear, non-inverting
>    uplink passband:   145.850 - 145.950 MHz
>    downlink passband:  29.400 -  29.500 MHz
>    translation equation:  
>        downlink (MHz) = uplink (MHz) - 116.450 MHz +/- Doppler
>    output power: 1.3 watts PEP (start of life)
> 
> Transponder II:  Mode B (70cm/2m) and Mode C (low power)
>    type; linear, inverting
>    uplink passband:   432.125 - 432.175 MHz  *See Note
>    downlink passband: 145.975 - 145.925 MHz
>    translation equation:
>        downlink (MHz) = 578.100 - uplink (MHz) +/- Doppler
>    output power: 8 watts PEP Mode B (start of life!), 2.5 watts PEP
> Mode C
>    *Note: Due to changes in Radio Amateur Service and Radio
>        Amateur Satellite Service there are questions as to
>        legality of US Amateurs transmitting to AO-7 on this
> frequency.
> 
> Keep those reports coming!
> 
> 73 de K2ubc (Martin Davidoff)
> 
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