SpaceX F9: Fram2: 2025-04-01 01:46:50 UTC (Fram2Ham)

fredy · March 31, 2025, 6:09pm

I’m opening this thread for updates about this launch. A previous thread with some info, especially around the “Fram2Ham SSTV Simulation on ISS” experiment can be found in FRAM2 HAM - SSTV experiment.

SSTV Transmissions are expected ~24h after launch, will be SSTV Robot36 at 437.550MHz

We have added that payload in SatNOGS DB with the temporary NORAD ID 98609.

Initial TLE from KEPS - ARISS at 2025-04-01 01:46:50 UTC launch time:

Fram2
1 90000U 25090A   25091.17708220 -.00012090  00000-0 -25444-3 0    64
2 90000  90.0015 318.6050 0001128  47.8434 312.3114 15.45593922    34

or by using the tempoary NORAD ID in DB:

Fram2
1 98609U 25090A   25091.17708220 -.00012090  00000-0 -25444-3 0    67
2 98609  90.0015 318.6050 0001128  47.8434 312.3114 15.45593922    37

Some sources about this launch:

fredy · March 31, 2025, 10:53pm

With the latest info from https://www.ariss.org/ there will be a voice transmission and maybe some SSTV transmissions during the first 24h:

Fram2 News–Voice Contact Planned

March 31, 19:30 UTC–TU Berlin Alumna Rabea Rogge To Broadcast From Space on Fram2 Mission
A unique radio experiment is being planned by the amateur radio club of Technische Universität Berlin (AFuTUB): On 1 April 2025, TU Berlin alumna Rabea Rogge, who will be the first German woman to launch into space, plans to make contact with Earth – directly from a SpaceX Dragon spacecraft on orbit. This is a milestone for German space travel. A TU Berlin livestream will broadcast the event directly from the University’s radio room.
For more information: TU Berlin Alumna Rabea Rogge To Broadcast From Space on Fram2 Mission
The radio contact with Rabea Rogge is currently scheduled for 1 April 2025, starting at 09:28 AM. The livestream will begin at 09:20 AM (CET)–Berlin time.
Livestream link: https://www.youtube.com/live/qaL-D4d5Txg

fredy · April 1, 2025, 1:01am

1724 SSTV and 81 FM observations have been scheduled between 2025-04-01 01:55 UTC and 2025-04-03 01:01 UTC.

Many of them are expected to not receive any transmission, as officially the event starts around at 2025-04-02 01:46:50 UTC (T+24h).

K4KDR · April 1, 2025, 3:43am

Unless I did something 1000% wrong, something was not right about that preliminary TLE for the Fram2 mission.

Space-Track just added an object (# 63427) that looks like a very likely candidate to be declared Fram2. As you can see below, the prelim TLE was one entire orbit off.

Fram2
1 63427U 25066A   25091.13562238  .00000291 -92113-6  00000+0 0  9992
2 63427  90.0051 318.4936 0157861  92.0495  34.6835 15.88239845    02

vu3tyg · April 1, 2025, 4:59am

The altitude of the Dragon is supposed to be 430 kms. I see the current altitude as 300 kms. Will they increase the altitude or we may have to wait for the right keps.

73, Nitin VU2JEK

EU1SAT · April 1, 2025, 5:02am

From Jonathan McDowell:

https://x.com/planet4589/status/1906931182341591100

“First Space Force orbit data for Fram-2 out , showing it in a 202 x 413 km x 90.01 deg orbit”

“Its catalog number is 63427”

HS318 · April 1, 2025, 7:46am

Voice transmission just heard over the UK on a 17 degree pass. 07:34:50UTC

fredy · April 1, 2025, 7:47am

This TLE (63427) seems to be too off related to the preliminary, check here the ikhnos results on the FM transmission:

63427 TLE:

Preliminary TLE:

So, for now we will remain and fit the preliminary TLE.

EDIT: fixed the typo on NORAD ID from “63247” to the right “63427”, the image was based on the right NORAD ID (63427)

fredy · April 1, 2025, 7:49am

Maybe the object 63427 is part of the rocket and not the Fram2.

EDIT fix typo, similar to the previous post

jomjom79 · April 1, 2025, 7:50am

Backup voice frequency is around 437.920.

Jomjom79

HS318 · April 1, 2025, 7:54am

audio recording can be found here, it just over 1 min long just one half of the conversation.

Audio recording

fredy · April 1, 2025, 9:08am

An updated TLE based on the FM transmissions, thanks @PE0SAT for his help:

Fram2
1 98609U 25090A   25091.31543312  .00000000  00000-0 -25444-3 0    03
2 98609  90.0015 318.4250 0001128  47.8434   2.3016 15.45593922    01

fram2_091_v2.dat (1.2 KB)
sites.txt (10.6 KB)

Note: this TLE has a negative B* value, which may affect the future observations, however when we get more data we will fit it accordingly to something more meaningful.

stefanp · April 1, 2025, 11:00am

Audio recording with the preliminary TLE - 18.5dBi yagi, 20dB LNA, IC-9700, Signal was S9 +10dB. So this TLE appears to be pretty accurate. I’ll take the updated TLE from PE0SAT for the evening pass.

vu3tyg · April 1, 2025, 2:22pm

Thanks Using this TLE. Nothing heard during the 14.21 UTC pass (5 degree elevation).

73, VU2JEK

fredy · April 1, 2025, 3:27pm

There is an updated TLE from space-track about object 63427:

0 TBA - TO BE ASSIGNED
1 63427U 25066A   25091.56541742  .00007229  00000-0  14950-3 0  9994
2 63427  90.0019 318.4986 0004210  73.8379 286.3344 15.45665190    75

This TLE seems to fit the FM transmissions of Fram2, so we are going to start following this object for Fram2 in SatNOGS DB and Network.

fredy · April 1, 2025, 3:30pm

Here is a comparison of the first TLE set of 63427 OBJECT (Fram2 Old) and the latest ones (in image are all the SatNOGS, ARISS and 63426 latest):

EU1SAT · April 1, 2025, 4:35pm

There is an updated TLE from celestrack about object 63427:

FRAM2                   
1 63427U 25066A   25091.64578502  .00006574  00000+0  13585-3 0  9991
2 63427  90.0015 318.4993 0004442  78.8825   8.2170 15.45675476    84

dl7ndr · April 1, 2025, 7:37pm

Received it unattended in good quality.

Also only 1 minute, only two answers.

2025-04-01T07:34:05 ‘LBN9J’ (Rabea Rogge) to TU-Berlin (DK0TU).mp3.zip (1.0 MB)
[Just remove .zip from the end.]

Rabea misspelled her callsign as LBN9J.

To hear the questions, watch https://www.youtube.com/live/qaL-D4d5Txg

I’ve used the TLE from ARISS.

1 90000U 25090A   25091.17708220 -.00012090  00000-0 -25444-3 0    64
2 90000  90.0015 318.6050 0001128  47.8434 312.3114 15.45593922    34

jomjom79 · April 1, 2025, 7:58pm

I got most of it. Including when they changed to the backup voice channel as i baseband recorded about 2 MHz just to be sure.

Rabea Rogge FRAM2 transmission

Jomjom79

fredy · April 1, 2025, 9:05pm

Fram2 is now identified in space-track.org and we can also confirm the TLE based on the good FM observations earlier. Its NORAD ID is 63427.