Good explanation Jonathan,

My experience has been to listen to the downlink frequencies when there is a 
pass over our area. The majority of the time the ISS packet station is 
operating. See http://www.ariss.net/  If the time is during the off-duty window 
mentioned previously, I alternately listen to the voice downlink frequency for 
a signal.  I haven't made a contact  with them since they went back to the 
Ericsson radio which is only an HT. Hope that helps 

Scott , nt5sm


> On May 9, 2016, at 10:40, Jonathan Guthrie via BVARC <[email protected]> wrote:
> 
>> On 5/7/2016 4:27 PM, Dwayne Jones via BVARC wrote:
>> Anyone know if the astronauts still talk on the ham radio that is on the 
>> International Space Station? Just for fun I would like to try to talk to 
>> them. I have done it once.
>> 
>> Dwayne
>> KB5YTA
> 
> I've been kind of waiting for someone to show up with specific knowledge of 
> the operations.  The ARISS (Amateur Radio on the International Space Station) 
> is controlled in Houston, and so there is local knowledge about how much of 
> that goes on.  Failing to hear from someone who actually knows, here is my 
> understanding:  ARISS schedules contacts with schools.  If you're not helping 
> one of those schools set up their equipment for a schedule, you're not going 
> to be able to guarantee a contact because whether or not an astronaut uses 
> the ARISS radios to make contacts during their own time depends on how much 
> interest the individual astronaut has in making contacts.  Some have a lot of 
> interest, some don't have much interest at all.  If you're interested in 
> making Q's with the ISS, you'll need to figure out when that works.  The 
> astronauts on the ISS are on UTC, and they have personal time an hour or so 
> after waking and an hour or so before going to sleep, with more time on the 
> weekends.  So, if you've got an ISS pass between 0600-0700Z or 2100Z-2200Z 
> you might give a listen on the published frequencies. They are making 
> contacts with schools, but my understanding they were mostly doing British 
> Commonwealth schools because Timothy Peake (an English astronaut) is 
> currently aboard.  That's the impression I got from my Twitter feed, anyway.
> 
> Here's a Web page with more information about ARISS: 
> http://www.ariss.org/contact-the-iss.html
> 
> -- 
> Jonathan Guthrie KA8KPN
> 
> 
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