[amsat-bb] Re: ISS HamTV Frequencies
ko6th.greg at gmail.com
Sun May 12 15:45:35 PDT 2013
Right. But what is that in terms of what normally gets described? For
example, I have a Digital TV card for my computer (Pinnacle PCTV HD).
It says it does "ATSC digital TV (HDTV up to 1080i, and SDTV)" and
"Clear QAM (unencrypted digital cable)".
Am I even close?
> HAMTV stream will be transmitted at 1.3 MSym/s or at 2.0 MSym/s.
> Technical specs of the set-top box indicate the range of the decoded
> stream. Generally this range is from 2 to 45 MSym/s, therefore if you
> need to buy it, you should select one that can guarantee a range from
> 1 to 45 MSym/s.
> Emanuele I0ELE
> Il 13/05/2013 0.15, Greg D ha scritto:
>> For the digital TV challenged, what means "Any DVB-S Decoder which
>> can decode a 1.3 MSym/s TV signal"? How would I know if I have such
>> a thing, or what I would need to get if I don't.
>> Greg KO6TH
>> I0ELE wrote:
>>> You can find the nominal link budget on
>>> http://www.amsat.it/HAMTV_Link-budget-IARU.pdf and all the relevant
>>> information http://www.amsat.it/Amsat-Italia_HamTV_brochure.pdf.
>>> * Recommended Antenna gain > 25 dB
>>> * RHCP
>>> * Low noise down converter i.e. Kuhne LNC 25 or LNC 25 TM NF 0.7 dB
>>> * Any DVB-S Decoder which can decode a 1.3 MSym/s TV signal
>>> 73, Emanuele, I0ELE
>>> President AMSAT Italia
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