Date   

FINDING the ISS

Clint Bradford
 

A few ISS-tracking programs and sites ...

For Apple iOS phones: GoSatWatch in the Apple Store. $9.95
 
VISIBLE PASSES - Call 1-844-N2YO-COM (1-844-629-6266) and 
enter your Zip Code! For VISIBLE passes.
 
VISIBLE PASSES via Text Messages - N2YO.com again! - 
https://www.n2yo.com/info/?a=22
 
Get notified when your chosen satellite breaks the horizon via 
text message - https://www.n2yo.com/info/?a=15 - requires you 
to register with N2YO … but painless.
 
For Android phones: ISS Detector in the Google Play Store.
 
For Mac home computers: MacDoppler Pro.
 
For Windows home computers: Orbitron (oldie but goodie).
 
Links at https://www.work-sat.com/tracking.html  - including the Registration 
Code for now-Shareware Orbitron!
 


Re: ISS Repeater Success

David Spoelstra
 

Well, I go out every night and make contacts. However, I can only get the birds about 25 degrees above the horizon since I've got trees and houses around me and I'm standing in my backyard. Five steps has always been more than enough. I've never lost contact. And thinking back, I've probably only used about three steps. That's why I'm now starting to experiment more. YMMV.
-David, N9KT


On Thu, Sep 3, 2020 at 4:34 PM Brad Smith via groups.io <corlissbs=aol.com@groups.io> wrote:
David, you are correct about the powerful stations taking over the FM birds and stepping on anyone they choose. It is a sad commentary on ham radio etiquette. Because they can, they do.
 
Personally, I do not believe that 3 steps would be very effective for HT's. I think you would lose contact with the bird between steps. Maybe Clint might offer an opinion on this. I personally think that more steps (7) would make better contact with the bird, but that is not possible on radios that I use because of the minimum step available.
 
Brad KC9UQR


Re: ISS Repeater Success

Brad Smith
 

David, you are correct about the powerful stations taking over the FM birds and stepping on anyone they choose. It is a sad commentary on ham radio etiquette. Because they can, they do.
 
Personally, I do not believe that 3 steps would be very effective for HT's. I think you would lose contact with the bird between steps. Maybe Clint might offer an opinion on this. I personally think that more steps (7) would make better contact with the bird, but that is not possible on radios that I use because of the minimum step available.
 
Brad KC9UQR


Re: ISS Repeater Success

David Spoelstra
 

I was in my backyard with an Arrow and HT surrounded by trees, so I wasn't able to acquire the ISS just above the horizon either. I need to experiment more too. For my table, I just did the calculations. Three steps might be better for most people with an Arrow or Elk. It will also take less hands!

I was also on PO-101 at 3am ET and not a sole was on it and I was loud and clear into it! Unfortunately, it wasn't a great pass. I'd really like to get a great pass with no one on it so I can tweak in the frequencies for most people with an Arrow and HT.
PO-101Tone 141.3RXTX
16AOS145.900437.490
17AOS 60 degrees437.495
18Overhead437.500
19LOS 60 degrees437.505
20LOS437.510

I'm thinking there should be two lists - one for the average person with an HT and Arrow/Elk that has three frequencies for each satellite, and other would be for a base station that can acquire the birds at a much lower elevation and it would have five frequencies. What do you think?

Also, there are supposed to be three new FM repeaters launched September 15, 2020 - CAS-5A, CAS-7A, and CAS-7C! We're going to have a ton of FM repeaters to play with!

Lastly, a tip for everyone on this mail list that is using a Arrow/Elk and HT. Your best bet is to work off hours. I find that I have a hard time competing with base stations during the day. I can do it, but I consider myself lucky. After about 11pm local time, I can get on a bird and make 4-6 contacts per pass. It's probably the same in the early morning, but I'm a night owl so someone else will have to try that!

-David, N9KT




On Thu, Sep 3, 2020 at 3:04 PM Clint Bradford via groups.io <clintbradford=mac.com@groups.io> wrote:
Outstanding information!

I was "stuck" mobile ... and definitely agree with the Doppler accommodation 
on the 440 downlink. 

ACQUIRE ABOVE - Acquire the satellite/ISS' 440 signal ABOVE the transmitted 
frequency.

I just published this, too, on my freq chart. I just went out one "step" -  

AOS - 437.805
ISS   - 437.800
LOS - 437.795

Need to experiment more ... For now - with HTs and not necessarily working 
at 5-10 degrees elevation - I think I'll stick with the three freqs. DEFINITELY, 
though, use your plan for satellite base stations!

Clint K6LCS


Re: ISS Repeater Success

Clint Bradford
 

Outstanding information!

I was "stuck" mobile ... and definitely agree with the Doppler accommodation 
on the 440 downlink. 

ACQUIRE ABOVE - Acquire the satellite/ISS' 440 signal ABOVE the transmitted 
frequency.

I just published this, too, on my freq chart. I just went out one "step" -  

AOS - 437.805
ISS   - 437.800
LOS - 437.795

Need to experiment more ... For now - with HTs and not necessarily working 
at 5-10 degrees elevation - I think I'll stick with the three freqs. DEFINITELY, 
though, use your plan for satellite base stations!

Clint K6LCS


ISS Repeater Success

David Spoelstra
 

I made three contacts on the ISS repeater last night! It's very loud and clear. Better than even my local repeaters!

Here's the frequencies I used:
ISSTone 67.0TXRX
21AOS145.990437.810
22AOS 60 degrees437.805
23Overhead437.800
24LOS 60 degrees437.795
25LOS437.790

TX stays the same, RX adjusts.

-David, N9KT


ISS now in FM Voice repeater mode

Roger Hackler
 

First Element of ARISS Next Generation (Next-Gen)
Radio System 
Installed in ISS Columbus Module

ARISS News Release                                                                                                  No.   20-13      

 
September 2, 2020—The ARISS team is pleased to announce that set up and installation of the first element of our next generation radio system was completed and amateur radio operations with it are now underway. This first element, dubbed the InterOperable Radio System (IORS), was installed in the International Space Station Columbus module. The IORS replaces the Ericsson radio system and packet module that were originally certified for spaceflight on July 26, 2000.
 
Initial operation of the new radio system is in FM cross band repeater mode using an uplink frequency of 145.99 MHz with an access tone of 67 Hz and a downlink frequency of 437.800 MHz. System activation was first observed at 01:02 UTC on September 2. Special operations will continue to be announced.
 
The IORS was launched from Kennedy Space Center on March 6, 2020 on board the SpaceX CRS-20 resupply mission. It consists of a special, space-modified JVC Kenwood D710GA transceiver, an ARISS developed multi-voltage power supply and interconnecting cables. The design, development, fabrication, testing, and launch of the first IORS was an incredible five-year engineering achievement accomplished by the ARISS hardware volunteer team. It will enable new, exciting capabilities for ham radio operators, students, and the general public. Capabilities include a higher power radio, voice repeater, digital packet radio (APRS) capabilities and a Kenwood VC-H1 slow scan television (SSTV) system.
 
A second IORS undergoes flight certification and will be launched later for installation in the Russian Service module. This second system enables dual, simultaneous operations, (e.g. voice repeater and APRS packet), providing diverse opportunities for radio amateurs. It also provides on-orbit redundancy to ensure continuous operations in the event of an IORS component failure. 
 
Next-gen development efforts continue. For the IORS, parts are being procured and a total of ten systems are being fabricated to support flight, additional flight spares, ground testing and astronaut training. Follow-on next generation radio system elements include an L-band repeater uplink capability, currently in development, and a flight Raspberry-Pi, dubbed “ARISS-Pi,” that is just beginning the design phase.  The ARISS-Pi promises operations autonomy and enhanced SSTV operations. 


ARISS in FM Repeater Mode

Roger Hackler
 

First Element of ARISS Next Generation (Next-Gen)
Radio System Installed in ISS Columbus Module


ARISS News Release                                                                                                  No.   20-13      

 
September 2, 2020—The ARISS team is pleased to announce that set up and installation of the first element of our next generation radio system was completed and amateur radio operations with it are now underway. This first element, dubbed the InterOperable Radio System (IORS), was installed in the International Space Station Columbus module. The IORS replaces the Ericsson radio system and packet module that were originally certified for spaceflight on July 26, 2000.
 
Initial operation of the new radio system is in FM cross band repeater mode using an uplink frequency of 145.99 MHz with an access tone of 67 Hz and a downlink frequency of 437.800 MHz. System activation was first observed at 01:02 UTC on September 2. Special operations will continue to be announced.
 
The IORS was launched from Kennedy Space Center on March 6, 2020 on board the SpaceX CRS-20 resupply mission. It consists of a special, space-modified JVC Kenwood D710GA transceiver, an ARISS developed multi-voltage power supply and interconnecting cables. The design, development, fabrication, testing, and launch of the first IORS was an incredible five-year engineering achievement accomplished by the ARISS hardware volunteer team. It will enable new, exciting capabilities for ham radio operators, students, and the general public. Capabilities include a higher power radio, voice repeater, digital packet radio (APRS) capabilities and a Kenwood VC-H1 slow scan television (SSTV) system.
 
A second IORS undergoes flight certification and will be launched later for installation in the Russian Service module. This second system enables dual, simultaneous operations, (e.g. voice repeater and APRS packet), providing diverse opportunities for radio amateurs. It also provides on-orbit redundancy to ensure continuous operations in the event of an IORS component failure. 
 
Next-gen development efforts continue. For the IORS, parts are being procured and a total of ten systems are being fabricated to support flight, additional flight spares, ground testing and astronaut training. Follow-on next generation radio system elements include an L-band repeater uplink capability, currently in development, and a flight Raspberry-Pi, dubbed “ARISS-Pi,” that is just beginning the design phase.  The ARISS-Pi promises operations autonomy and enhanced SSTV operations. 

 

 

 


Re: Upcoming Zoom Satellite Presentations

Clint Bradford
 

THAT was a great 2-1/4 hours!

I am referring to presenting my satellite show to the GARDEN STATE AMATEUR RADIO ASSOCIATION ...

https://www.gsara.club/

Their September newsletter ...

https://www.gsara.club/wp-content/uploads/2020/08/SEPTEMBER-2020-PROPAGATOR.pdf

What made the presentation great was their wonderful Q&A afterward. THEY made the show!

(And I just KNEW that a club that had in its membership a rabbi and a Roman Catholic priest 
would enjoy my wife's favorite joke - inserted in an appropriate spot:

A priest, a minister, and a rabbit walk into a bar. The rabbit says, "I think I'm a typo."
 
Next presentations  September 14 and October 27 (the October one is almost full).

And the Q&A turned into a general conversation. NO politics. Just a bunch o' hams 
chatting about what they are doing in their region, and the amateur and commercial
radio industries.

Clint
909-999-SATS 



Re: ISS FM Repeater

AF7ZA
 

Thanks for the heads up Clint
Bill

On Sep 2, 2020, at 10:48 12AM, Clint Bradford via groups.io <clintbradford@...> wrote:

New
The ARISS team is pleased to announce that set up and installation of the first element of our next generation radio system was completed and amateur radio operations with it are now underway. 

This first element, dubbed the InterOperable Radio System (IORS), was installed in the International Space Station Columbus module. 


The IORS replaces the Ericsson radio systemand packet module that were originally certified for spaceflight on July 26, 2000.


Initial operation of the new radio system is in FM cross band repeater mode using an uplink frequency of 145.99 MHz with an access tone of 67 Hz and a downlink frequency of 437.800 MHz. 

System activation was first observed at 01:02 UTC on September 2. Special operations will continue to be announced.


The IORS was launched from Kennedy Space Center on March 6, 2020 on board the SpaceX CRS-20 resupply mission. 

It consists of a special, space-modified JVC Kenwood D710GA transceiver, an ARISS developed multi-voltage power supply and interconnecting cables. 

The design, development, fabrication, testing, and launch of the first IORS was an incredible five-year engineering achievement accomplished by the ARISS hardware volunteer team. It will enable new, exciting capabilities for ham radio operators, students, and the general public. 

Capabilities include a higher power radio, voice repeater, digital packet radio (APRS) capabilities and a Kenwood VC-H1 slow scan television (SSTV) system.


A second IORS undergoes flight certification and will be launched later for installation in the Russian Service module. This second system enables dual, simultaneous operations, (e.g. voice repeater and APRS packet), providing diverse opportunities for radio amateurs. It also provides on-orbit redundancy to ensure continuous operations in the event of an IORS component failure.


Next-gen development efforts continue. For the IORS, parts are being procured and a total of ten systems are being fabricated to support flight, additional flight spares, ground testing and astronaut training. Follow-on next generation radio system elements include an L-band repeater uplink capability, currently in development, and a flight Raspberry-Pi, dubbed “ARISS-Pi,” that is just beginning the design phase. The ARISS-Pi promises operations autonomy and enhanced SSTV operations.



ARISS–Celebrating 20 years of continuous amateur radio operations on the ISS!


info by ARISS team .


73 de IW2BSF - Rudy


Re: Upcoming Zoom Satellite Presentations

Clint Bradford
 

Please send me a quick email to ...

k6lcs@...

... and just say “Zoom” ... it will send you to a quick Survey Monkey survey ...


Re: Upcoming Zoom Satellite Presentations

noslracgl@...
 

Hi, Clint...

I attended your last presentation, but I had to leave midway to take my exam for my Amateur Extra license (I passed).

I would like to try again for the September 14 presentation. Please send me the details.

Thank you,

Larry, N6LGC

On Thu, Aug 27, 2020 at 10:57 PM Clint Bradford via groups.io <clintbradford=mac.com@groups.io> wrote:
Need to shut down accepting additional attendees for the September 2 
presentation ...
 
But still accepting requests to attend either of these two dates:
 
- September 14
- October 27

If you might be interested in attending either of these Zoom presentations, 
please send me a private email for exact times and Zoom meeting number! 
 
And don't not forget to update your Zoom app regularly - ONLY by going 
directly to their Web site or using the app's drop-down option, "Check for 
updates."

Clint Bradford K6LCS
909-999-SATS (7287)
k6lcs@...
 


ISS FM Repeater

Clint Bradford
 
Edited

 
The ARISS team is pleased to announce that set up and installation of the first element of our next generation radio system was completed and amateur radio operations with it are now underway. 


This first element, dubbed the InterOperable Radio System (IORS), was installed in the International Space Station Columbus module. 


The IORS replaces the Ericsson radio systemand packet module that were originally certified for spaceflight on July 26, 2000.


Initial operation of the new radio system is in FM cross band repeater mode using an uplink frequency of 145.99 MHz with an access tone of 67 Hz and a downlink frequency of 437.800 MHz. 

System activation was first observed at 01:02 UTC on September 2. Special operations will continue to be announced.


The IORS was launched from Kennedy Space Center on March 6, 2020 on board the SpaceX CRS-20 resupply mission. 

It consists of a special, space-modified JVC Kenwood D710GA transceiver, an ARISS developed multi-voltage power supply and interconnecting cables. 

The design, development, fabrication, testing, and launch of the first IORS was an incredible five-year engineering achievement accomplished by the ARISS hardware volunteer team. It will enable new, exciting capabilities for ham radio operators, students, and the general public. 

Capabilities include a higher power radio, voice repeater, digital packet radio (APRS) capabilities and a Kenwood VC-H1 slow scan television (SSTV) system.


A second IORS undergoes flight certification and will be launched later for installation in the Russian Service module. This second system enables dual, simultaneous operations, (e.g. voice repeater and APRS packet), providing diverse opportunities for radio amateurs. It also provides on-orbit redundancy to ensure continuous operations in the event of an IORS component failure.


Next-gen development efforts continue. For the IORS, parts are being procured and a total of ten systems are being fabricated to support flight, additional flight spares, ground testing and astronaut training. Follow-on next generation radio system elements include an L-band repeater uplink capability, currently in development, and a flight Raspberry-Pi, dubbed “ARISS-Pi,” that is just beginning the design phase. The ARISS-Pi promises operations autonomy and enhanced SSTV operations.



ARISS–Celebrating 20 years of continuous amateur radio operations on the ISS!


info by ARISS team .


73 de IW2BSF - Rudy


Satellite Re-entry

Clint Bradford
 

I found this webpage and thought you might like it  ...

https://www.space.com/ogo-1-satellite-reentry-coming.html


Re: AO-92 - Battery Situation

Clint Bradford
 

From AMSAT News -

AO-92 has been experiencing low battery voltage during many night time passes over the last several weeks.


While the satellite is in eclipse 
voltage has been dropping low enough (3.6v IIRC) to cause an automatic shift to safe mode. It emerges from eclipse toward the end of night passes over North America and the transponder will then switch on, usually with a minute or two remaining in the pass. As we move to winter in the northern hemisphere, the end of the eclipse should shift over the pole and to the beginning of the descending part of the orbit, and this issue should change for at least the northern hemisphere ops.

[ANS thanks Andrew Glasbrenner, KO4MA, AMSAT VP Operations, and Nate White, N5LEX, for the above information]


Re: PO-101 and SO-50 with an Elk and Baofeng UV-5X3

Ramesh SA
 

I use  a Woxun with a Nagoya whip antenna and can access the AO91 and A092 sats perfectly...I am from India...So51 has always been a problem ...


Re: Upcoming Zoom Satellite Presentations

Clint Bradford
 

Need to shut down accepting additional attendees for the September 2 
presentation ...
 
But still accepting requests to attend either of these two dates:
 
- September 14
- October 27

If you might be interested in attending either of these Zoom presentations, 
please send me a private email for exact times and Zoom meeting number! 
 
And don't not forget to update your Zoom app regularly - ONLY by going 
directly to their Web site or using the app's drop-down option, "Check for 
updates."

Clint Bradford K6LCS
909-999-SATS (7287)
k6lcs@...
 


Re: PO-101 and SO-50 with an Elk and Baofeng UV-5X3

Brad Smith
 

Arup:
 
Read what Clint uses for a radio. It is cheap and works very well. Great to start out with. I used a cheap Yaesu FT-60 (Just an older model of the same) for 7 years and worked many many passes.
 
Brad KC9UQR


Re: PO-101 and SO-50 with an Elk and Baofeng UV-5X3

Arup
 

Hi Clint - 

I tried using a Nagoya whip about a week ago and was not able to hear even AO91 or AO92 (but this was during the working hours around 1500 UTC so the birds may have been quiet).

Over the weekend I splurged and bought an Elk LPDA. Even with the Elk I was not able to hear PO-101 today (which has a 2M downlink).

Since I'm not able to even hear the downlinks at times I have not yet attempted to talk over the birds. I contacted the person who gave a satellites talk at QSO Today virtual expo and he seemed to think my radio is partly to blame. I just wanted some more opinions to decide if I need to get a better radio.

Arup
KE8OTP


PO-101 and SO-50 with an Elk and Baofeng UV-5X3

Arup
 

Good day - and WELCOME to the group!

YES - The 2M downlinks from AO-91/92 are MUCH stronger than a LEO's 440mHZ 
similar-TX-power downlinks.

And - depending upon time of day - you might just have been one of a very few 
Listening" for SO-50 ... In which case you need to transmit a 74.4 tone for a few 
seconds to turn its 10-minute timer ON. THEN others (who may not know that!) 
might be there for you.

What antenna(s) are you using? The 2M downlinks are able t be heard with 
stock ducks - although you really need some gain to properly work the 
satellites.

Clint K6LCS


------------------------
I was able to listen to either AO-91 or AO-92 on Monday with my set-up at about 20:00 or 20:30 UTC, though not very well. Today I tried to listen to both SO-50 and PO-101 at about 18:45 UTC and heard neither. On the AMSAT website SO-50 was heard at about 18:45 UTC from FM19. I'm in FN01 and was on top of a parking garage today with a clear view of the sky in all directions. 

Are my issues stemming from the cheap radio or was no one on the birds when I tried to listen? At first I reasoned that I could not hear SO-50 as the downlink is 70cm. When I couldn't hear PO-101 I started to scratch my head a bit. I've seen youtube videos where folks are successful with the baofengs, but I have yet to find success. Anyone have thoughts?

Arup

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