Dear @fredy ,
Thank you for your reply.
Following your recommendation, I will create a new transmitter entry.
I will also mark the 436.750 MHz transmitter entry as invalid. Although transmissions on this frequency were planned during the early stages of the project, the design was later changed, and the satellite that was actually launched does not have the capability to transmit on 436.750 MHz.
73,
Kazuki NISHIOKA, JF6FYI
Nothing heard from KOSEN-2R on a nearly overhead pass here across the Eastern U.S. around 0810utc on 465.360.
Would you expect it to transmit in full eclipse?
Should it be transmitting world-wide?
Thanks!
Dear @fredy,
Thank you very much for your prompt approval of the additions and modifications to the KOSEN-2R transmitter entries.
73,
Kazuki NISHIOKA, JF6FYI
Dear @K4KDR Scott,
The operations team has not yet been able to acquire the signal either, so the satellite appears to be largely silent regardless of its illumination conditions.
In addition, they have limited the downlink modes to AFSK and GMSK in order to reduce power consumption. These transmissions are intended to be sent in response to commands from the ground station. Therefore, even if the satellite is functioning normally, it is likely that such downlinks can only be observed when the spacecraft is within range of the operators’ ground station in Japan, and may not be detectable from other regions.
73,
Kazuki NISHIOKA, JF6FYI
Thank you for the reply!
In the past, many Teams with non-responsive satellites have provided the Amateur Community with details on how to send a specific uplink command to their satellite in one last attempt to establish communications.
Instead of ONE ground station attempting to reach KOSEN-2R, now you have stations all around the world transmitting on your behalf.
Please let us know if we can multiply your efforts in this case!
Dr. Shiwa’s answer to me on April 24th:
“FSI-SAT2 is preparing to provide RGB and NR band images of the Earth available for download via SSTV. We will contact you again when the SSTV images become available.”
Dr. Mitsuharu SHIWA
By the way, please use this SatNOGS DB entry (98326). Your linked entry seems to be not in use.
Dear @K4KDR Scott,
Thank you for your offer to help, and I apologize for my delayed reply.
However, the KOSEN-2R uplink frequencies are limited to 401 MHz and 921 MHz. Since these frequency bands are not allocated to the amateur satellite service, I believe that only a very limited number of stations would be able to legally transmit uplink commands to the satellite.
73,
Kazuki NISHIOKA, JF6FYI
Dear @fredy ,
Regarding WASEDA-SAT-ZERO-II, only the temporary TLE is currently assigned, which prevents the satellite from being tracked properly on SatNOGS.
Since CelesTrak identifies the satellite as NORAD ID 68797, I recently submitted a proposal to set the Followed NORAD ID accordingly.
If there are no issues with this change, I would greatly appreciate it if you could apply the update when convenient.
Thank you for your time and support.
73,
Kazuki NISHIOKA, JF6FYI
No problem!
Note that in the U.S. we do have access to 902 MHz to 928 MHz which is categorized as one of the ‘ISM’ bands.
So, if any circumstance ever arises that someone in this part of the world can be of any assistance, we are available!
(for anyone stumbling across this post, that frequency range is an Amateur Radio allocation in the U.S. as well)