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ISS Fram2Ham SSTV Simulation

On: 1 febrero, 2025

ISS Fram2Ham SSTV Simulation

Rabea Rogge LB9NJ / KD3AID – Photo credit DLR

The ARISS Chair has released details of the International Space Station Fram2Ham Slow Scan TV (SSTV) simulation that will take place February 13-17 on 437.550 MHz FM.

During the Fram2 mission, planned for Spring 2025, astronaut Rabea Rogge LB9NJ / KD3AID, will be sending amateur radio SSTV images from the SpaceX Dragon spacecraft as part of a high school and university student competition. These SSTV images will also be available to be received by the general public during her mission.

From Discord: FRAM2 Ham Radio Competition Announcements Channel:

ARISS_Chair — Today [Feb 1] at 12:08 AM
Fram2Ham SSTV Simulation on ISS
Hi @everyone

The ARISS international team is planning an SSTV event to help all participating to be as proficient as possible in acquiring images from Fram2Ham and submitting them in the SSTV gallery. Like previous SSTV events, ARISS will provide special commemorative certificates for those who upload images to the gallery. Certificates will be delivered after the completion of both the Fram2 simulation event and the Fram2 mission.

SSTV Simulation details:
Hardware: ARISS radio transmitter set to low power (5 watts vs. 25 watts for previous SSTV events). This is to simulate the challenges and unknowns of a new radio system on a Dragon capsule that might be in an unfavorable attitude in some parts of the mission flight path.

Operations Frequency: 437.550 MHz. Using the SSTV (public downlink) planned for Fram2Ham, ground users can practice the more challenging 70 cm Doppler correction.

SSTV Mode: PD120. The longer image capture for this simulation (120 seconds, vs. 36 seconds for Fram2Ham’s Robot 36 SSTV mode) will allow ground users to hone their signal polarization switching skills (manually and electronically) as well as precise antenna pointing.

Operations Duration: February 13 (World Radio Day) to February 17, 2025. This long duration, over a weekend, will allow users multiple passes to practice, learn lessons, make corrections, and try again.

Summary:
There are several challenges like low transmit power, variations of antenna orientation, and a short, 3-day mission duration, with only a limited time assigned for the SSTV operation. These challenges require operating proficiency and the use of the best attainable radio station and this simulation shall give the possibility to exercise this. Are you up for the challenge?

Fram2Ham https://fram2ham.com/

Join Fram2Ham on Discord https://discord.com/invite/GYQzmSh5sp

Follow Rabea Rogge LB9NJ / KD3AID on X https://x.com/rprogge

Get The Details…

Editor

AMSAT-UK

Telebridge ISS Contact with Essex School Students

By: admin

On: 19 octubre, 2024

In: AMSAT

Tagged: AMSAT, communication

Telebridge ISS Contact with Essex School Students

Amateur Radio on the International Space Station (ARISS) has received schedule confirmation for an ARISS radio contact between an astronaut aboard the International Space Station (ISS) and students at the Robert Drake Primary School located in Essex, UK.

ARISS conducts 60-100 of these special amateur radio contacts each year between students around the globe and crew members with ham radio licenses aboard the ISS.

The Robert Drake Primary School (with about 313 students) is located in Benfleet, Essex about 30 miles east of London along the Thames estuary.

This will be a telebridge Contact via Amateur Radio allowing students to ask their questions of astronaut Sunita Williams, amateur radio call sign KD5PLB. The downlink frequency for this contact is 145.800 MHz and may be heard by listeners that are within the ISS-footprint that also encompasses the telebridge station.

The ARISS amateur radio ground station (telebridge station) for this contact is in Greenbelt, Maryland, U.S. The amateur radio volunteer team at the ground station will use the callsign K6DUE, to establish and maintain the ISS connection.

The ARISS radio contact is scheduled for October 21, 2024 at 10:42 am BST (UK) (9:42 UTC, 5:42 am EDT, 4:42 am CDT, 3:42 am MDT, 2:42 am PDT).

Follow ARISS for updates on
X: https://x.com/ARISS_Intl
Facebook: facebook.com/ARISSIntl
_______________________________

As time allows, students will ask these questions:

1. What do I need to learn to be an astronaut?

2. What do you do to have fun in space?

3. How long has the international space station been in space?

4. Is time different in space?

5. Do you watch TV? If yes, what do you watch?

6. What do you eat and how do you eat it?

7. What advice would you give kids like me who may want to be an astronaut in the future?

8. How do people drink on the space station?

9. How do you get food and water in space?

10. What is your favourite part of Earth to fly over and why?

11. Have you ever walked in space?

12. What is your favourite part of being an astronaut on the space station?

13. Does it take long to get use to gravity back home?

14. Do you get chance to speak to family in friends and how do you do it?

15. Have you seen any shooting stars or comets whilst on the space station?

About ARISS:

Amateur Radio on the International Space Station (ARISS) is a cooperative venture of international amateur radio societies and the space agencies that support the ISS. In the United States, sponsors are the American Radio Relay League (ARRL), Amateur Radio Digital Communications (ARDC), Radio Amateur Satellite Corporation (AMSAT), NASA’s Space Communications and Navigation program (SCaN) and the ISS National Lab—Space Station Explorers.

The primary goal of ARISS is to promote exploration of science, technology, engineering, the arts, and mathematics topics. ARISS does this by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students. Before and during these radio contacts, students, educators, parents, and communities take part in hands-on learning activities tied to space, space technologies, and amateur radio. For more information, see http://www.ariss.org/