STRF bandscan results

ENSFNM · July 23, 2024, 1:44am

The NORAD ID matches the ISS, coincidentally 2265 MHz is the Return Link from the ISS to TDRS. (NASA’s relay satellite system)

pe2bz · July 23, 2024, 8:51am

Thank. Would this mean the return link was locked to a ground station making it unmatchable with the ISS TLE ? And, the signal to the left appears to be another signal, any ideas on that ?

michal.drzal · August 5, 2024, 9:36pm

michal.drzal · December 10, 2024, 7:29pm

2024-12-09T06:09:16_401.130_9990_59062.dat (1.4 KB)
2024-12-09T06:09:16_401.130_9990_59062.txt (128 Bytes)
2024-12-09T01:23:47_400.055_9990_60745.dat (2.7 KB)
2024-12-09T01:23:47_400.055_9990_60745.txt (126 Bytes)
2024-12-09T04:41:57_401.100_9990_59061.dat (2.0 KB)
2024-12-09T11:39:23_400.551_9990_60577.dat (4.0 KB)
2024-12-09T11:39:23_400.551_9990_60577.txt (124 Bytes)
2024-12-09T09:54:21_400.455_9990_57582.dat (1.8 KB)
2024-12-09T11:10:40_400.581_9990_60579.dat (2.8 KB)
2024-12-09T04:41:57_401.100_9990_59061.txt (127 Bytes)
2024-12-09T11:10:40_400.581_9990_60579.dat (2.8 KB)

michal.drzal · December 10, 2024, 7:32pm

2024-12-09T11:10:40_400.581_9990_60579.txt (128 Bytes)
2024-12-09T11:10:40_400.581_9990_60579.dat (2.8 KB)
2024-12-09T11:39:23_400.551_9990_60577.dat (4.0 KB)
2024-12-09T11:39:23_400.551_9990_60577.txt (124 Bytes)

michal.drzal · December 10, 2024, 8:01pm

2024-12-09T10:56:19_401.700_9990_58264.dat (2.0 KB)

2024-12-09T12:59:35_401.580_9990_52174.dat (1.9 KB)

michal.drzal · December 11, 2024, 11:06pm

2024-12-10T22:45:46_400.264_9990_57792.dat (2.4 KB)

TIANQI 21
Launch date: September 5, 2023
Source: People’s Republic of China (PRC)
Launch site: Yellow Sea Launch Area, China (YSLA)
Frequency: 400.264 MHz

michal.drzal · December 12, 2024, 12:01am

2024-12-10T22:34:46_401.050_9990_55084.dat (3.5 KB)

GAMA-ALPHA
Launch date: January 3, 2023
Source: Lithuania (LTU)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)
Frequency: 401.050 MHz

michal.drzal · December 15, 2024, 1:42pm

Search for Pico1 sats on 450MHz.
Frequencies file: frequencies_pico1.txt (142 Bytes)

NORAD: 60570

NORAD: 60566 or 60568 (too close together to tell)

NORAD: 60564

NORAD: 60571

Confirmed: 60571, 60564, 60570
Not sure: 60566, 60568
Not found: 60572

michal.drzal · December 16, 2024, 11:54pm

2024-12-16T17:17:54_401.205_9990_59917.dat (378 Bytes)

OBJECT A
NORAD ID: 59917
Launch date: May 30, 2024
Source: People’s Republic of China (PRC)
Launch site: Jiuquan Satellite Launch Center, China (JSC)
Frequency: 401.205 MHz

2024-12-16T16:35:09_401.612_9990_58555.dat (756 Bytes)

OBJECT C
NORAD ID: 58555
Launch date: December 8, 2023
Source: People’s Republic of China (PRC)
Launch site: Jiuquan Satellite Launch Center, China (JSC)
Frequency: 401.162 MHz

michal.drzal · December 19, 2024, 12:21pm

TIANQI 25,26,27,28
NORAD ID: 59909,59910,59911,59912
Launch date: May 29, 2024
Source: People’s Republic of China (PRC)
Launch site: Yellow Sea Launch Area, China (YSLA)
Frequency: 400.265 MHz

look like LORA signals

michal.drzal · December 19, 2024, 12:27pm

2024-12-18T13:12:53_400.006_9990_59812.dat (3.1 KB)
OBJECT C
NORAD ID: 59812
Launch date: May 21, 2024
Source: People’s Republic of China (PRC)
Launch site: Jiuquan Satellite Launch Center, China (JSC)
Frequency: 400.005 MHz

michal.drzal · December 19, 2024, 2:25pm

Confirmed LoRas @ 400.450Mhz

TIANQI 25
NORAD ID: 59909
Launch date: May 29, 2024
Source: People’s Republic of China (PRC)
Launch site: Yellow Sea Launch Area, China (YSLA)

TIANQI 21
NORAD ID: 57792
Launch date: September 5, 2023
Source: People’s Republic of China (PRC)
Launch site: Yellow Sea Launch Area, China (YSLA)

OBJECT B
NORAD ID: 61196
Launch date: September 20, 2024
Source: People’s Republic of China (PRC)
Launch site: Xichang Space Center, China (XSC)

OBJECT F
NORAD ID: 54687
Launch date: December 9, 2022
Source: People’s Republic of China (PRC)
Launch site: Yellow Sea Launch Area, China (YSLA)

OBJECT A
NORAD ID: 61195
Launch date: September 20, 2024
Source: People’s Republic of China (PRC)
.Launch site: Xichang Space Center, China (XSC)

OBJECT C
NORAD ID: 61197
Launch date: September 20, 2024
Source: People’s Republic of China (PRC)
.Launch site: Xichang Space Center, China (XSC)

OBJECT D
NORAD ID: 61198
Launch date: September 20, 2024
Source: People’s Republic of China (PRC)
Launch site: Xichang Space Center, China (XSC)

michal.drzal · December 19, 2024, 10:36pm

week signals on 401.032 MHz, potentially interesting

michal.drzal · December 21, 2024, 2:19pm

while looking for CTC-0

pe2bz · July 31, 2025, 6:01pm

For 3 days, on all 33105 passes, where the bottom curve is the original Jason 2 frequency from the DB, I notice another signal, following exactly the time for 33105. The tle is one day old.

The higher frequency was added 3 days ago to check if the received signal does follow

no info about 33105 locking to groundstation

Bit clueless

michal.drzal · August 29, 2025, 6:36pm

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60916.739917 2209176000.000000 11.502384 9990
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