[amsat-bb] Upcoming HamTV ???

Zach Leffke zleffke at vt.edu
Sat May 7 16:14:09 UTC 2016

Hello Everyone,

I noticed that the Monday, 20160509, 0926 UTC planned ARISS contact with 
The Kings School in the UK says to watch for the HamTV transmitter.  
Does anyone know any more details about the HamTV side of this?  More 
specifically, it looks like just before the UK contact (descending pass) 
there will be a good pass over the Eastern US (ascending pass).  What 
are the chances that the HamTV transmitter will be active during the 
pass over the US?  Do they turn the HamTV transmitter on early?  Also, I 
know they have 4 downlink frequency options and two operating modes.  
Does anyone know which frequency and which mode will be selected on 
Monday? In the same vein, does anyone know of a good webpage or other 
resource for determining the operating schedule of the HamTV transmitter 
or is the upcoming contacts page on the ARISS site the best place?

We recently got our 3.0m Dish and S-Band receiver systems installed in 
the VTGS and I was hoping to get up early Monday morning and attempt to 
record the HamTV transmission as ISS passes over the US on its way to 
the UK for the planned ARISS contact. Hopefully, if I can get a clean IQ 
recording of the HamTV transmission, we can use the recording to begin 
developing our GNU Radio DVB-S demodulators to extract the video stream.

Any and all info would be appreciated.


-Zach, KJ4QLP

Research Associate
Ted & Karyn Hume Center for National Security & Technology
Virginia Polytechnic Institute & State University
Work Phone: 540-231-4174
Cell Phone: 540-808-6305

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