[amsat-bb] Linear Transponder Up and Down link frequency calculator

[Hasan al-Basri]

The error is in CAS-4B, 4A is missing...too many things going on here,
sorry about that.
73, N0AN
Hasan


On Sun, Apr 28, 2019 at 7:00 AM Hasan al-Basri <hbasri.schiers6 at gmail.com>
wrote:

> Two other points. There is a 1200 Hz error on CAS-4A....a few hundred Hz
> is predictable, but I think an additional 1000 Hz may have crept in there,
> so check your calcs.
>
> Notice all others are no more than a few hundred Hz...which is as it
> should be.
>
> The reference freq are for USB, perfect voice tone and fully doppler
> corrected.  The Rx are FunCube Pro+ SDRs, that have been calibrated to
> within 0.356 Hz @ 10 MHz and checked against 6 meters to be accurate within
> 3 Hz. (Compared to GPS Discipline Oscillator)
>
> 73, N0AN
> Hasan
>
>
> On Sat, Apr 27, 2019 at 8:41 PM Wendy and Terry Osborne via AMSAT-BB <
> amsat-bb at amsat.org> wrote:
>
>> Hi Folks,
>>
>> With the number of Linear Transponder Satellites that are operational or
>> in the pipeline,
>> I thought a simple program to convert uplink to downlink frequencies was
>> worth writing.
>> I’ve written one for Windows.
>> You can find it here:
>> https://www.dropbox.com/sh/4o375h6bygjxkzr/AABi9Ck9Wc6ODrhXwIVHxI-_a?dl=0
>> I’ve put the exe file and the same file in zip format.
>> I have put all the current birds plus the ones that have launches pending.
>> Just select the satellite of interest from the “Satellite” drop down
>> menu,
>> put your frequency into the text box and hit the Up or Dn calculate
>> button.
>>
>> Let me know if you think this is useful.
>>
>> 73,
>> Terry Osborne ZL2BAC
>> _______________________________________________
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>