AMSAT and ARRL Field Day are this upcoming weekend (June 26-27). Satellites that should be available for communication, along with frequency information, are listed below.
FM Satellites
Please make only one QSO on an FM satellite. Additional QSOs on FM satellites do not count for points in ARRL or AMSAT Field Day.
| AO-91 (RadFxSat / Fox-1B) | |||
| Uplink FM (67 Hz CTCSS) |
Downlink FM | Comments | |
| AO-91 (RadFxSat / Fox-1B) | 435.250 MHz | 145.960 MHz | Due to battery status, please do not attempt to access while in eclipse (nighttime passes). Satellite may cut out at times during daytime passes due to low battery voltages. |
| FROM AMSAT OPERATIONS – PLEASE DO NOT ATTEMPT TO USE ON NIGHTTIME PASSES | |||
| SO-50 (SaudiSat-1C) |
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| Uplink FM (67 Hz CTCSS) |
Downlink FM | Comments | |
| SO-50 (SaudiSat-1C) | 145.850 MHz | 436.795 MHz | Operational |
| Likely to be available for all passes during Field Day. SO-50 also has a 10 minute timer that must be armed before use. Transmit a 2 second carrier with a CTCSS tone of 74.4 Hz to arm the timer. | |||
| PO-101 (Diwata-2) | |||
| Uplink FM (141.3 Hz CTCSS) |
Downlink FM | Comments | |
| PO-101 (Diwata-2) | 437.500 MHz | 145.900 MHz | Operational |
| Check https://twitter.com/Diwata2PH for schedule updates. Likely to be available at least for daytime passes during Field Day. PO-101 is very easy to hear but does need a decent amount of uplink power to reliably access. | |||
| CAS-3H (LilacSat-2) | |||
| Uplink FM | Downlink FM | Comments | |
| CAS-3H (LilacSat-2) | 144.350 MHz | 437.200 MHz | Operational, but rarely active |
| The FM transponder is on no set schedule and may or may not be on for Field Day. For real time updates about which mode the satellite is in, see the AMSAT Live OSCAR Satellite Status Page | |||
| IO-86 (LAPAN-A2) | |||
| Uplink FM (88.5 Hz CTCSS) |
Downlink FM | Comments | |
| IO-86 (LAPAN-A2) | 145.880 MHz | 435.880 MHz | Operational |
| Satellite is in a low-inclination low earth orbit and not visible north of about 30 degrees north or south of 30 degrees south. Should be usable if active from southern regions of Texas and Florida. FM transponder operations are by schedule only. See https://twitter.com/lapansat for the latest schedule. | |||
| AO-27 | |||
| Uplink FM | Downlink FM | Comments | |
| AO-27 | 145.850 MHz | 436.795 MHz | Operational |
| AO-27 is only active for approximately four minutes on ascending and descending passes over mid-latitudes of the Northern Hemisphere | |||
| ISS Crossband Repeater | |||
| Uplink FM (67 Hz CTCSS) |
Downlink FM | Comments | |
| ISS Crossband Repeater | 145.990 MHz | 437.800 MHz | Operational |
| The ARISS team intends for the crossband repeater to be active during Field Day. See ARISS Status for status information | |||
| © 2021 AMSAT | |||
Linear Transponder Satellites
Make as many QSOs as possible. Note that for ARRL Field Day, you may only contact the same station once on any satellite for points. For AMSAT Field Day scoring, you may contact any station once per mode on each satellite, so you may work the same station up to two times on each satellite (once in voice and once in CW).
| AO-7 Mode B – U/v Inverting Analog SSB/CW | |||
| Uplink LSB | 432.125 MHz | through | 432.175 MHz |
| Downlink USB | 145.925 MHz | through | 145.975 MHz |
| Active only in sunlight. Beacon 145.975 MHz. May flip into Mode A or off due to high utilization. | |||
| AO-73 (FUNcube-1) – U/v Inverting Analog SSB/CW | |||
| Uplink LSB | 435.130 MHz | through | 435.150 MHz |
| Downlink USB | 145.950 MHz | through | 145.970 MHz |
| 1k2 BPSK 145.935 MHz telemetry. Currently in full-time transponder mode and should be active for Field Day. See FUNcube Data Warehouse for current status. Note that the AO-73 transponder frequency is not stable and you may have to tune a significant amount away from the nominal frequency. | |||
| XW-2A (CAS-3A) – U/v Inverting Analog SSB/CW | |||
| Uplink LSB | 435.030 MHz | through | 435.050 MHz |
| Downlink USB | 145.665 MHz | through | 145.685 MHz |
| CW Beacon 145.660 MHz. Digital Telemetry 145.640 MHz 9.6/19.2kbps, GMSK | |||
| XW-2B (CAS-3B) – U/v Inverting Analog SSB/CW |
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| Uplink LSB | 435.090 MHz | through | 435.110 MHz |
| Downlink USB | 145.730 MHz | through | 145.750 MHz |
| CW Beacon 145.725 MHz. Digital Telemetry 145.705 MHz 9.6/19.2kbps, GMSK | |||
| XW-2C (CAS-3C) – U/v Inverting Analog SSB/CW |
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| Uplink LSB | 435.150 MHz | through | 435.170 MHz |
| Downlink USB | 145.795 MHz | through | 145.815 MHz |
| May be intermittent (2 seconds on, 5 seconds off) and difficult to use. CW Beacon 145.790 MHz. Digital Telemetry 145.770 MHz 9.6/19.2kbps, GMSK | |||
| XW-2D (CAS-3D) – U/v Inverting Analog SSB/CW |
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| Uplink LSB | 435.210 MHz | through | 435.230 MHz |
| Downlink USB | 145.860 MHz | through | 145.880 MHz |
| May be intermittent (2 seconds on, 5 seconds off) and difficult to use. CW Beacon 145.855 MHz. Digital Telemetry 145.835 MHz 9.6/19.2kbps, GMSK | |||
| XW-2F (CAS-3F) – U/v Inverting Analog SSB/CW | |||
| Uplink LSB | 435.330 MHz | through | 435.350 MHz |
| Downlink USB | 145.980 MHz | through | 146.000 MHz |
| CW Beacon 145.975 MHz. Digital Telemetry 145.955 MHz 9.6kbps, GMSK | |||
| EO-88 (Nayif-1 / FUNcube on Nayif-1) – U/v Inverting Analog SSB/CW |
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| Uplink LSB | 435.015 MHz | through | 435.045 MHz |
| Downlink USB | 145.960 MHz | through | 145.990 MHz |
| FUNcube on Nayif-1 1.2kbps BPSK telemetry 145.940 MHz. Transponder only operational when satellite is in eclipse. Likely only usable in the southern parts of North America for Field Day. | |||
| CAS-4A – U/v Inverting Analog SSB/CW | |||
| Uplink LSB | 435.210 MHz | through | 435.230 MHz |
| Downlink USB | 145.860 MHz | through | 145.880 MHz |
| CW Beacon 145.855 MHz. Digital Telemetry 145.835 MHz 4.8kbps GMSK | |||
| CAS-4B – U/v Inverting Analog SSB/CW | |||
| Uplink LSB | 435.270 MHz | through | 435.290 MHz |
| Downlink USB | 145.915 MHz | through | 145.935 MHz |
| CW Beacon 145.910 MHz. Digital Telemetry 145.890 MHz 4.8kbps GMSK | |||
| JO-97 (JY1Sat) – U/v Inverting Analog SSB/CW |
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| Uplink LSB | 435.100 MHz | through | 435.120 MHz |
| Downlink USB | 145.855 MHz | through | 145.875 MHz |
| Transponder currently active full-time | |||
| TO-108 (CAS-6) – U/v Inverting Analog SSB/CW | |||
| Uplink LSB | 435.270 MHz | through | 435.290 MHz |
| Downlink USB | 145.915 MHz | through | 145.935 MHz |
| Transponder currently intermittent, operating for a few minutes at a time. CW Beacon 145.910 MHz. 4.8k GMSK telemetry 145.890 MHz. Beacons currently carrier only. | |||
| RS-44 – V/u Inverting Analog SSB/CW | |||
| Uplink LSB | 145.935 MHz | through | 145.995 MHz |
| Downlink USB | 435.610 MHz | through | 435.670 MHz |
| Significant fading is expected as the satellite is attached to the upper stage of the launch vehicle, but should be very reliable for Field Day use. CW Beacon 435.605 MHz | |||
| FO-99 (NEXUS) – V/u Inverting Analog SSB/CW | |||
| Uplink LSB | 145.900 MHz | through | 145.930 MHz |
| Downlink USB | 435.880 MHz | through | 435.910 MHz |
| Scheduled to be activated for 30-45 minutes at 22:55 UTC and 00:28 UTC on Saturday evening for Eastern North America. The activation at 22:55 UTC will primarily benefit the northeast United States and Maritime provinces. The 00:28 UTC activation should provide service for most of Eastern North America. The schedule can be found at https://www.jamsat.or.jp/wordpress/wp-content/uploads/2021/05/nexus202106.jpg | |||
| © 2021 AMSAT | |||
Digital Satellites
NO-84 and NO-104’s HF-to-UHF PSK31 transponders should be available for Field Day use. Their digipeaters may also be available. For more information, visit http://aprs.org/psat.html for NO-84 information and http://aprs.org/psat2.html for NO-104 information.
FalconSAT-3 is currently offline.
GRBAlpha has a 9k6 unproto digipeater at 437.025 MHz simplex and could be used for Field Day QSOs. Digipeat via OM9GRB.