[Ground-station] Please vote - Ambasat sensor

[KENT BRITAIN]

 A pass directly at you or directly away from you.
8 km second
800,000 cm/second/(3 cm) = 266000 cycles per second.   Or 266 kHz
An overhead pass would be 266 kHz coming, 266 kHz leaving.   or 500 KHz in round numbers.
LEO pass is typically about 5 min.  or 300 seconds
500/300 or just under 2 kHz per second.
A lot of rounding and a lot of unknowns on orbit height, pass angles, etc.but this should give you a starting point at worse case.
73 Kent WA5VJB



    On Monday, September 30, 2019, 5:13:55 PM CDT, Ron Economos via Ground-Station <ground-station at lists.openresearch.institute> wrote:  
 
 What magnitude of Doppler shift would be expected at 10.4 GHz? Total 
shift, and more importantly, rate of shift.

I've done some preliminary testing with a DVB-S2 receiver, and it can 
handle 30 kHz/second no problem.

Ron W6RZ

On 9/29/19 09:32, Leffke, Zachary via Ground-Station wrote:
> Carrier/Beacon at 10G? atmega328 to handle CW IDing every so often?  Obviously less operational ground stations, but might encourage the construction of 10G ground stations (Ku PLL LNB, bias-t, FCDPP or RTLSDR), which fuels the five/dime drive.  Baby steps toward 10G amateur satellite spectrum use?  Doppler at 10G from LEO should be fun.  Antenna would be compact, maybe a patch on one side of a 4-layer board and components on the other....room for the solar cells?
>
> This looks like the big brother of the Kicksats.....hardest part looks like power from the solar cells....2.2V @ 80mA according to their website.  They do specifically say in their FAQs that you can't add another radio.....but sounds like they could be convinced.
>
> Good stuff.  I'd be interested in ANY beacon on ANY band, Doppler is fun.
>
> -Zach, KJ4QLP
>

  
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