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 Kenwood TM-D710GA 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
Participation and registration in competition
Teams should be composed of 3 to 5 educational institutions, ideally distributed internationally to maximize the chances of receiving all segments of SSTV images. Registration is open until February 10, 2025.
For more details on how to participate, the PDF guide can be downloaded from https://fram2ham.com/wp-content/uploads/2025/01/amapay_user_manual_v1.pdf