Barb, please remind us what SSTV mode is used on NO104?
Sent from my iPhone
> On Jul 19, 2021, at 18:28, Robert Bruninga <bruninga@usna.edu> wrote:
>
> The only downside is that its orbit is at a 28 degree latitude and so is
> low on the southern horizon for northern states. Though the elevation
> goes up and down over a two week period by several degrees.
>
> Let me know that it is working. Oh, also, the pass has to be in the sun
> for power and for live images.
> bob
>
>> On Mon, Jul 19, 2021 at 4:03 PM David Spoelstra <davids@mediamachine.com> wrote:
>>
>> @WB4APR I didn't know that! When I read about the satellite initially I thought that you only got an SSTV image if someone was transmitting one. I didn't realize that it constantly transmitted what was in it's memory (at least I'm guessing that). I'm going to try that ASAP and let my club know too.
>> Thanks!
>> -David, N9KT
>>
>>> On Mon, Jul 19, 2021 at 1:43 PM Robert Bruninga <bruninga@usna.edu> wrote:
>>>
>>> We have both. To receive SSTV, the APRS PSAT2 satellite supports it full time
>>> with an SSTV image once every 4 minutes full time 24/7/365.on 435.350 MHz.
>>>
>>> In addition, users can also uplink their own images to the SSTV transponder
>>> on 29.481 MHz. See how on http://aprs.org/psat2.html
>>>
>>> The transponder is also available for PSK31 users. - Bob, WB4APR
>>>
>>> On Mon, Jul 19, 2021 at 1:13 PM GMM via AMSAT-BB <amsat-bb@amsat.org> wrote:
>>>> Best Project first:
>>>> If you have multiple projects and limited resources, you need to choose the project that will be the most successful or Get the best bang for the buck.
>>>> What are you goals for an Amateur-Radio project for ISS?
>>>>
>>>> #1, Generate interest in Amateur radio capabilities.
>>>> #2, Encourage Non-Amateur-radio people to possibly get-into the Amateur-Radio or SWL Hobby.
>>>> #3, Get more people excited about the ISS and is open programs that can allow the average person to participate.
>>>> #4, Provide the ISS crew with some entertaining and excitement about their projects.
>>>> #5, Language universal projects work best.
>>>>
>>>> The APRS project has a low following and does not generate much excitement or newspaper coverage.
>>>> SSTV does great and all 5 of the listed categories.
>>>> Why is SSTV better the APRS?
>>>> SSTV is a project that will cross over between two hobbies,
>>>> Short-wave-listening and Amateur radio. Most Short-wave-listening and
>>>> Amateur operators are capable of receiving and decoding SSTV signals.
>>>> With 10's of millions of SWL+AR stations receiving these signals month after
>>>> month, you will see a huge interest in the abilities of Amateur Radio on ISS.
>>>>
>>>> You must have heard the saying "A picture is worth a thousand words".
>>>> When MarexMG was running the SSTV Program in Space Station Mir, out SSTV
>>>> images were showing up in magazines and newspapers around the world.
>>>>
>>>> When was the last time you saw a New paper or magazine story
>>>> [Non-ham] talking about APRS from ISS? Never!
>>>>
>>>> The MarexMG SSTV project was a huge hit. Schools around the world
>>>> were setting up receiving stations to receive the images. I remember seeing
>>>> a new story showing how the Great-Lakes ices was changing week after week,
>>>> based on images from Mir SSTV.
>>>>
>>>> If we want to build up a large amount of support for existing and future
>>>> Amateur radio projects on ISS, then we need to put our best project front and center.
>>>>
>>>> I am not talking about turning on SSTV for 1 or two weekend per year.
>>>> I am talking about turning it on for a FULL 6 consecutive months in a row 24 hours a day, 7-days a week.
>>>
>>>> Image cycle duration:
>>>> Let's keep is Simple and Safe.
>>>> Recommended format:
>>>> To provide the greatest access and reduce Heat stress on the radio,
>>>> I recommend using SSTV format Robot-36.
>>>>
>>>> The reason for the low-quality Robot-36, is because the transmitting time
>>>> is only about 36 seconds for each image. I know this is the lowest quality
>>>> image format, but since it’s the shortest, we can keep the radio cooler.
>>>>
>>>> All transmitters run MUCH hotter in Zero Gravity!
>>>> And if the ISS Air pressure is turned down from 14 psi to 10 psi [Usually
>>>> during space walks], the radio will also run hotter at 10 psi, than at 14 psi.
>>>>
>>>> Maximum number of ISS-transmitted images per hour.
>>>> 1 image every 5 minutes or 20 per hour. And depending on heatsink
>>>> temperature and cooling fan status, we may need to reduce the
>>>> number of pictures per hour to keep the radio cool.
>>>>
>>>>
>>>> My goal is to expand the presence of Amateur Radio on ISS and other
>>>> satellites and the best tools we have on ISS today is Slow Scan TV.
>>>> Let's generate some worldwide excitement and make this hobby grow.
>>>>
>>>> Turn off APRS!
>>>>
>>>> Turn ON SSTV for a FULL 6 consecutive months in a row 24 hours a day, 7-days a week.
>>>>
>>>> And then start watch the publicly generated by Marex SPACE-CAM1
>>>>
>>>> by Miles, WF1F
>>>
>>>
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