To facilitate HAM radio operators who wish to use FM satellite repeaters for QSOs, this table has been compiled and created for reference. The data is current as of May 28, 2023.
Author: BH8PHG, 2023/05/28 MD Version 1
Table of Contents
AO-91 (RadFXSat)SO-50 (SaudiSat-1C)PO-101 (Diwata-2B)ISS (ARISS/ZARYA)CAS-3H (LilacSat-2 / 紫丁香二号)CAS-5AUVSQ-SATTevel 1-8
1. AO-91 (RadFXSat)
| Stage | Ascending frequency | Downward frequency | Subsonic | Frequency difference |
|---|
| AOS-1 | 435.2400 | 145.9650 | 67.0 | 289.2750 |
| AOS-2 | 435.2450 | 145.9625 | 67.0 | 289.2825 |
| AO-91 | 435.2500 | 145.9600 | 67.0 | 289.2900 |
| LOS-1 | 435.2550 | 145.9575 | 67.0 | 289.2975 |
| LOS-2 | 435.2600 | 145.9550 | 67.0 | 289.3050 |
2. SO-50 (SaudiSat-1C)
| Stage | Ascending frequency | Downward frequency | Subsonic | Frequency difference |
|---|
| OPEN-1 | 145.8450 | 436.8050 | 74.4 | -290.9600 |
| AOS-1 | 145.8450 | 436.8050 | 67.0 | -290.9600 |
| AOS-2 | 145.8475 | 436.8000 | 67.0 | -290.9525 |
| OPEN-2 | 145.8500 | 436.7950 | 74.4 | -290.9450 |
| SO-50 | 145.8500 | 436.7950 | 67.0 | -290.9450 |
| LOS-1 | 145.8525 | 436.7900 | 67.0 | -290.9375 |
| LOS-2 | 145.8550 | 436.7850 | 67.0 | -290.9300 |
3. PO-101 (Diwata-2B)
| Stage | Ascending frequency | Downward frequency | Subsonic | Frequency difference |
|---|
| AOS-1 | 437.4900 | 145.9050 | 141.3 | 291.5850 |
| AOS-2 | 437.4950 | 145.9025 | 141.3 | 291.5925 |
| PO-101 | 437.5000 | 145.9000 | 141.3 | 291.6000 |
| LOS-1 | 437.5050 | 145.8975 | 141.3 | 291.6075 |
| LOS-2 | 437.5100 | 145.8950 | 141.3 | 291.6150 |
4. ISS （ARISS/ZARYA）
| Stage | Ascending frequency | Downward frequency | Subsonic | Frequency difference |
|---|
| AOS-1 | 145.9850 | 437.8100 | 67.0 | -291.8250 |
| AOS-2 | 145.9875 | 437.8050 | 67.0 | -291.8175 |
| ISS-FM | 145.9900 | 437.8000 | 67.0 | -291.8100 |
| LOS-1 | 145.9925 | 437.7950 | 67.0 | -291.8025 |
| LOS-2 | 145.9950 | 437.7900 | 67.0 | -291.7950 |
5. CAS-3H (LilacSat-2 / Purple Lilac No. 2)
| Stage | Ascending frequency | Downward frequency | Subsonic | Frequency difference |
|---|
| AOS-1 | 144.3450 | 437.2100 | N/A | -292.8650 |
| AOS-2 | 144.3475 | 437.2050 | N/A | -292.8575 |
| CAS-3H | 144.3500 | 437.2000 | N/A | -292.8500 |
| LOS-1 | 144.3525 | 437.1950 | N/A | -292.8425 |
| LOS-2 | 144.3550 | 437.1900 | N/A | -292.8350 |
6. CAS-5A
| Stage | Ascending frequency | Downward frequency | Subsonic | Frequency difference |
|---|
| AOS-1 | 145.9200 | 435.6100 | N/A | -289.6900 |
| AOS-2 | 145.9225 | 435.6050 | N/A | -289.6825 |
| CAS-5A | 145.9250 | 435.6000 | N/A | -289.6750 |
| LOS-1 | 145.9275 | 435.5950 | N/A | -289.6675 |
| LOS-2 | 145.9300 | 435.5900 | N/A | -289.6600 |
7. UVSQ-SAT
| Stage | Ascending frequency | Downward frequency | Subsonic | Frequency difference |
|---|
| AOS-1 | 145.9000 | 437.0300 | 67.0 | -291.1300 |
| AOS-2 | 145.9050 | 437.0250 | 67.0 | -291.1225 |
| UVSQ-SAT | 145.9050 | 437.0200 | 67.0 | -291.1150 |
| LOS-1 | 145.9075 | 437.0150 | 67.0 | -291.1075 |
| LOS-2 | 145.9100 | 437.0100 | 67.0 | -291.1000 |
8. Tevel 1-8
| Stage | Ascending frequency | Downward frequency | Subsonic | Frequency difference |
|---|
| AOS-1 | 145.9650 | 436.4100 | N/A | -290.4450 |
| AOS-2 | 145.9675 | 436.4050 | N/A | -290.4375 |
| Tevel 1-8 | 145.9700 | 436.4000 | N/A | -290.4300 |
| LOS-1 | 145.9725 | 436.3950 | N/A | -290.4225 |
| LOS-2 | 145.9750 | 436.3900 | N/A | -290.4150 |
Appendix: Other commonly used downlink frequencies for satellites
| Satellite | Downward frequency |
|---|
| ISS-SSTV&Voice | 145.8000 |
| ISS-Digipeater | 145.8250 |
| NOAA-15 | 137.6200 |
| NOAA-18 | 137.9125 |
| NOAA-19 | 137.1000 |
| IO-117 (GreenCube) | 435.3100 |
Note:
- In the "Offset" column, a "-" indicates that the offset is set downwards. All frequency units, except for sub-audio frequencies, are in.
MHz (Megahertz)。
- This table applies toFM satellite, according toU-section ±10 kHz, V-section ±5 kHzProduction.
SO-50The OPEN phase of the satellite is used to activate the repeater. If the repeater has already been activated, this phase can be skipped. The two OPEN phases correspond to the occurrence of SO-50 and exceeding the limit; you can use them as needed to activate the sub-sonic transmission.CAS-3HAndPO-101Please follow the schedule for enabling the forwarder, and refer to the official release schedule and startup plan.ISS-FMTo activate the relay, please stay updated on the latest developments and be aware ofActivities such as SSTV events and astronaut extravehicular activity （CSS）May be turned off in certain situations.AO-91Currently, the satellite can only operate in sunlight due to a battery failure, and its status is unstable, potentially shutting down unexpectedly.- The China Space Station (CSS) has completed coordination of amateur radio frequencies, but as of now, the CSS's amateur radio payloads are still...It has not yet been put into use.Please refer to the latest updates. To save space, the Markdown frequency table will be added to this table after CSS is officially enabled for amateur radio payloads.
UVSQ-SATCurrently, the satellite is primarily used for scientific research purposes. Please stay updated on the latest news regarding when it will be opened for public use.TevelDue to the large number of satellites and their identical parameters, the plan involves selectively enabling the transponders of some satellites at specific times. Please refer to the latest information to determine which satellite transponders are available at any given time.- In this table, the units for sub-audio frequencies are:
Hertz (Hz)。If the table contains sub-audio annotations marked as N/A, indicating that this satellite transponder can be used without sub-audio frequencies.
Acknowledgments
Thank you to the following HAMs for providing information about this table's updates.
- BI7MPS
CAS-3H, CAS-5A
- BG7XWF
UVSQ-SAT
- BH7GUL, BI4IVM, BG7XWF
Tevel 1-8
After your new FM repeater satellite has been launched, please contact the author BH8PHG to update the frequency table.
Changelog
2023/05/28 MD Version 1The original Excel frequency table was cluttered and poorly formatted. Therefore, I have completely restructured the entire frequency table using Markdown. Future updates will provide both Excel and PDF versions, allowing you to use whichever format is most convenient for your needs.
Thank you for using this form. We appreciate your feedback and would be grateful if you could point out any errors or omissions.
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