2018-08-22 Meeting notes with NKOM

Date

22 Aug 2018

Attendees

• Unknown User (eeide)

• Nils Torbjörn Ekman
• Unknown User (rogerbi)

• Målen Frode

• Andersen Hæge
• Unknown User (garaq)

Notes

• Egil updated on MASSIVE status. 
  
  • Launch scheduled for 2019-2020
• S-band frequency bands. 
  • Uplink: 2025-2110 MHz. 
  • Downlink: 2200-2290 MHz.
• UHF
  • • Frode has been investigated what they did in the past.
    • It's up to the administration if it's fine to file an application for amateur band.  Frode is a bit reluctant to do this because of interference and safety.
    • From 432-438 there's also the Earth Exploration Satellite Service. It says active so it's to uplink data from sensors in the ground. So that's why TTC shouldn't be here because you can ruin other low power EESS sensors.
    • So we should aim from 400.15-402. NKOM has filed another EO satellite in this band. It could also be 402-403 but there is more interference.
    • Power density or spectrum mask for this? Don't think so. You file the application stating power limits and so on. This is published so that other administrations will complain. You have to find a way to coexist.
    • Do we have to come up with a frequency? Yes, ITU will only publish it. We should file the entire band and then will narrow it down after comments from administrations.
    • Satellite operators send NKOM the files created by Spacecom. 
    • Requested info for Spacecom. Book number 2 Appendices. Appendix 4. Link: http://search.itu.int/history/HistoryDigitalCollectionDocLibrary/1.43.48.en.102.pdf
    • NKOM will look into the TIES account. Maybe they can pay for it.
    • Spacecom files with frequencies will be sent to NKOM. NKOM will check it and send it to ITU with a fax. In a few weeks it'll be published. NKOM will get comments from administrations (this will last 3 months).
    • What's the timeline of getting there? You will never get here, but we can launch and as long as we don't harm anyone it'll be fine. In the unlikely case that someone complains about it after it's launched, NKOM will tell us to turn the satellite off.
    • We don't know exactly the orbit we will be in. But we just write an approximate one (best guess). Put in something that is close to where we want to be.
    • Some experiments for communication to Arctic nodes. We could demonstrate to do this at these frequencies. Uplink sensor data to satellite, it's an active sensor on the ground. 401-402. Or we could file in 432-438.
       for the sensors.
    • Feeder link? Can we do 2-way link in 401-403 and 432-438? 401-403 just uplink. You have to comply with table 5 in frequency table so it'll say direction. 400.15-401 will be complicated but we can use it, or 402-403. Space operations would not include 2 way comm for sensors. NKOM assumes it's both directions in 432-438 as EESS, so it'd be to operate sensors both ways.
    • Can we use all the way from 432-438 for sensors? It depends on what interference we want to accept. NKOM will talk to their supplier to see if there are other satellites using spread spectrum.
    • NKOM suggests to talk to satellite supplier to see if we can operate in 401.
    • For ground station filing it's easier. We can take a look at previous filings.
    • Filing fees. NKOM usually invoices customers but will look into how much it'll be.

Action items

• NKOM  will investigate required ITU fees for TIES account.
• NKOM will send a link to radio regulations, NKOM fees and ITU fees for filing.
• We will look into requested information for API in Radio Regulations (Book 2 Appendices, Appendix 4).
• We will start creating the file with Spacecom software.
• Next meeting in two weeks.