New UHF ISS Digipeater!
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- Опубликовано: 14 дек 2016
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Recently, the old VHF Ericsson handheld used for the digipeater on the ISS died and it was replaced with an equivalent UHF one. This is my first time digipeating through it.
I also tried to make my first contact through it. I successfully sent a message to the digipeater for another ham, but he didn't receive it from the ISS. He did however receive one of my beacon packets and you can see me on his map.
The "Programming TH-D72 for ISS Digi" video will be uploaded next week.
I made this recording on November 2nd, 2016, shortly after the UHF digipeater was activated.
The music at the end is Cybotron - Clear, a classic electro track.
Thanks for watching!
73, John Brier KG4AKV 
Наука
I think the correct answer to "What are you tracking" would be Extra-Terrestrial Humans or space ships.
It s will be most funny !
Just passed my General Class Exam, John!!! :)
Haha seconds ago I just asked on the thread on the other video! Congrats Kees! I got my Technician license in 1998 and it took me until 2012 or so to upgrade to General! You are moving fast!
Damn NASA trying to act cool not talking to you
Great video @Space Comms - I had a quick voice QSO with NA1SS back in the early 2000s when I first got my ticket - sitting in a driveway in a Chevette(my 1st car) with an FT-5200 into a 5/8 Mag mount. Still one of the highlights of my geek career! 73 de VA3BFW
Thanks Brent!
I have never had a voice QSO with the ISS. It is one of my biggest goals. When I do it will be the highlight of my ham career, I am sure.
73, John Brier KG4AKV
Now I really wanted a Kenwood TH-D72
They are out of production and hard to get now :-/
Thanks for posting this video. I wasn’t sure how to do that. I did find instructions on the internet called APRS through the ISS with Kenwood TH-D72a radio written by Algis Salys. Nice to see things in action by your video and to know about ISS switch to a UHF radio. de K6KNS in CA
petbytes i
You need to use Satellite AR on your smartphone to tell you azimuth and elevation. You can point the phone towards the satellite, and that gives you an indication of where to aim the antenna.
Nice video, I try to post daily.
how do you know which angle to hold the antenna at while the station goes overhead?
I wrote an article to explain how to track direction and elevation. Here is the passage on how to track elevation:
To estimate the elevation of the satellite remember that 0 degrees is flat and 90 degrees is straight up. 45 degrees is in the middle of 0 and 90.
A rule of thumb is if you make a fist and hold your arm flat, the top of your fist is 10 degrees above the horizon. Move your fist up one “fist length” and now you’re at 20 degrees. Raise it one more fist length and now you’re at 30 degrees, and so on and so forth.
While one first length at 10 degrees may not seem like a high elevation, it is easy and common to underestimate how high 10 degrees is. I think if you look far off into the distance at an object, as the 10 degree angle continues to rise you might realize 10 degrees is surprisingly high.
If you go up four fist lengths you’re almost at 45 degrees, As I implied earlier 45 degrees is easy to estimate because it’s in the middle of 0 and 90. If you look at that angle by holding your arm out you’ll see 45 degrees is pretty high, so if 10 degrees is almost a quarter of 45 degrees (remember it’s four fists lengths to almost 45 degrees), 10 degrees is pretty high too.
Here is the article (and a video) on how to track direction:
spacecomms.wordpress.com/how-to-track-satellites-with-a-compass/
73, John Brier KG4AKV
I love my TH-D72A but one downside is I've never been able to see my own packets on the radio after hitting a digipeater like my VX-8DR does. I always have to go to the internet to see if I made it to the network.
hamradiocomms You can't see your digipeated packets in the stations list but they do pop up when they're received as "My Position" or "My Message."
I liked how the car transforms from the red to a dark grey @ 2:06 :-)
That might not have been an accidental edit ;-)
@@SpaceComms that came out brilliant!!!! Good video by the way.
@@venusnair thanks!
I have the Kenwood TH-D74 APRS radio, and I’ve used APRS quite a bit. I never knew there was a digipeater on the ISS. I’ll have to give this a try. What power are you running? I’m surprised an HT can reach the ISS, but I’m sure that yagi helps a lot as long as it’s aimed properly.
5 watts. It is back on VHF now. 145.825 MHz. Check ariss.net to see if packets have been gated recently. The equipment is on the fritz. They also turn it off for space walks and vehicle docking/undocking.
I caught 3 or 4 packets today with the UV-5R stock antenna, it's still quite unheard of as it's new, on the VHF system I could get 20+ packets per pass.
Standard Science Nice! What APRS decoder did you use?
Unfortunately none.
As wierd as it sounds, I just like listening to the APRS itself. I've tried using APRSdroid, but without great hardware I didn't get the best of results. Hopefully more people begin to use the UHF system. For Christmas I shall treat myself to a Pryme AL-800 long whip, nothing to a yagi (I ain't got that money) but it should give me some boost of reception (and transmittion of course when I get licenced.) Getting any new fancy equipment for Christmas John?
Ah, I have done that many times before, especially while the ISS is visible. It adds an interesting element to be able to hear it while you can see it.
I hope you enjoy the big antenna. I'm sure it will help a lot over whatever rubber duck type antenna you're using now.
I don't have any new equipment Christmas presents planned... But that doesn't mean my parents won't get me anything :-)
That now just begs the question... Has anyone discuised an antenna as a Christmas tree? :D
Merry Christmas and keep up the awesome content!
Haha! I'm *sure* that has been done.
Happy holidays to you too!
73, John Brier KG4AKV
I just started playing with NO-84, Does the D72 not process incoming packets while you are looking at the list?
No it does, you can still hear it beep as it decodes them. I think you can set whether they pop up regardless of whether or not you are in a menu or reading messages/list. I probably have it set so it doesn't take over the list. In fact if you are scrolling and a new packet is decoded the number of the messages change.
Very good video friend. What path did you use? 73 from Brazil. PU2PYC
Jefferson Grilo Thank you!
The path is just "ARISS"
It really helps to have some canned messages ready to send. I'm experimenting with an auto reply right now. I see that someone has already pointed out the ignore DCD setting. I'll look out for you, 73 K5PAV
Paul Vizard Yeah, I have also configured saved messages since I made this video and use them regularly.
Brother, what are the latest UHF frequencies ISS Ham repeater has been using now ?
Did you mean 145.990 MHz transmitting frequency towards ISS no longer in use either?
This is an old video. Go to ariss.org for all the current frequencies.
RUclips took me to the 1000 subscriber video, and then I saw this. Reminds me to try to do something with ISS UHF APRS, something I haven't done. Good kick in the behind for me, I needed this. Assuming its on ? now ?
californiakayaker N6GRG Digipeater is offline indefinitely.
Does this include the VHF ? digipeater ?
@@SpaceComms I could hear the aprs iss from a d710ga apparently today, and haven't tried the uhf one. The web site I looked at said the uhf wasn't on all the time ? You did well, but I didn't get through with a 710 here also. Still learning , didn't try changing freq for Doppler . A lot of other stations were coming through.
@@californiakayaker it likely won't be on UHF ever again. It was only on UHF as their old VHF Ericcson was dying and they had a UHF Ericcson they swapped in temporarily. Make sure you have your PATH set to ARISS.
@@SpaceComms Yes, did not take any time to check things like "PATH" as it was my first very hap hazard attempt. Yes, I'll be looking into the details now, thanks.
PS by the way, they are still saying that "very infrequently" they may use the uhf aprs. I wish they would set up something for 9600 aprs, or perhaps packet ?
Do you need a general license to do this or can you do it with a technician license?
HaCk3d __ Technician is fine.
Space Comms thanks 😄
Any idea what KM4SYN was using for antenna etc? And you said it went througha. hop, meaning it was someone else's APRS repeater that actually sent it up?
In email he said he was using an FT-60R and on his QRZ profile it says he uses an Elk 2M/440 antenna.
No, my packet only went through RS0ISS, not another repeater.
In the video I made after this, "I made CONTACT! UHF ISS Digipeater," I did try to send a message to someone I received through a terrestrial APRS digipeater, which of course wouldn't work.
They were in my stations list and I got confused thinking they were from the ISS because they were only the second person on the list, and by that time I had received several packets. I think the reason there were no other stations in the list from the ISS was because all he "several" packets I received were from the same station.
In the future I am going to clear out all my saved stations and messages before the pass so I will know anyone in there is from the current ISS pass, not local through 144.39, or not from a previous pass.
heh, I'm literally watching "contact" now.
I thought the other person's packet went through a digipeater, not yours. Cool though. This motivates me to want to do it too.
Oh, no no one's else went through a different/additional digipeater than the ISS digipeater.
Yah, if you have an APRS capable HT or something, it's not hard to at least get digipeated through it.
I have a mobilinkd and have used it with local stuff. The ISS stuff would be fun, of course, and I like APRS because I don't need to ragchew or anything. Need a yagi though.
Also want to think about how to set up cables to record (zoom h2) and monitor like you are. Not really necessary for local/digipeater stuff, but pretty much required to do satellite stuff.
Ted Timmons Yeah I really like the digipeater because it seems efficient. It might also be because it's new/unique/different. For me it's a bit more of a challenge than SO-50 voice for example.
Hit iss on 2m but not on 70cms next times it on uhf mode I'll try that nice thanks for sharing 👍👍👍
It's not on UHF anymore. It's either one or the other and it was only UHF because the VHF radio was not working for a while. It should be on VHF if it's on at all.
Space Comms that explains it I've know it's listed as one of the frequencies used but never heard it normally I do use vhf so thanks for the info 👍👍👍
You would be able to se d and receive much faster using l laptop or your phone than the 16 key pad on the ht. I have the same radio and like to use the radio,s tnx with uiview for Contacts via ISS.
That is true. Thanks for commenting.
73, John Brier KG4AKV
Like to learn how to do this in the UK
Do you have your ham radio license yet? If not look up the Radio Society of Great Britain and AMSAT UK (Amateur Radio Satellite Corporation).
rsgb.org/
amsat-uk.org/
what frequency is the digit repeter on?
It is back on VHF. It is 145.825 but it usually isn't working at all and when it is, it doesn't hear well. They are working to upgrade the equipment but need more funds. Check ariss.org for details.
73, John Brier KG4AKV
Hey Bro I Have UV-5R Walkie Talkie With 174 MHz Range Can I Listen To The ISS And Transmit Messages?
You can listen but not transmit without an amateur radio license. If you look into getting you license you will learn a lot of what you need to know to listen. Frequencies are posted on ARISS.org.
@@SpaceComms OK Thank You :)
@@lakshaynarayan1853 You're welcome friend.
cool. wanna try frm JA.
Kazuhiko OHO Good luck!
what's antena name?
Arrow II arrowantennas.com/arrowii/146-437.html