Diwata-2 Designated Philippines-OSCAR 101 (PO-101)

On October 29, 2018, the Diwata-2 microsatellite was launched on a H-IIA launch vehicle from the Tanegashima Space Center, Tanegashima, Japan. Diwata-2 was developed by the University of the Philippines Dillman (UPD) and the Advanced Science and Technology Institute of the Department of Science and Technology (DOST-ASTI) under the PHL-Microsat program (now succeeded by the STAMINA4Space program), and in cooperation with Tohoku University and Hokkaido University.  The project was funded by the Department of Science and Technology (DOST) and monitored by the DOST-Philippine Council for Industry, Energy and Emerging Technology Research and Development (DOST-PCIEERD). The satellite carries an amateur radio payload that has been tested and is now ready for service.

At the request of the STAMINA4Space program, AMSAT hereby designates Diwata-2 as Philippines-OSCAR 101 (PO-101). We congratulate the owners and operators of PO-101, thank them for their contribution to the amateur satellite community, and wish them continued success on this and future projects.


Drew Glasbrenner, KO4MA
AMSAT VP Operations / OSCAR Number Administrator


Fox-1Cliff Launch Membership Drive: Free Digital Copy of “Getting Started with Amateur Satellites” for New or Renewing Members

The next AMSAT Fox-1 satellite, Fox-1Cliff, is scheduled to launch on Spaceflight’s SSO-A mission on a SpaceX Falcon 9 from Vandenberg Air Force Base.

Fox-1Cliff carries the Fox-1 U/v FM repeater as well as AMSAT’s L-Band Downshifter.

Uplink: 435.300 MHz FM voice (67.0 Hz CTCSS tone) / 1267.300 MHz FM voice (67.0 Hz CTCSS tone)
Downlink: 145.920 MHz FM voice; AFSK digital data up to 9600 bps
Transmit power: 600 mW nominal

As part of the preparations for the launch of Fox-1Cliff, AMSAT is making the “Getting Started With Amateur Satellites” book available for a limited time as a download with any paid new or renewal membership purchased via the AMSAT Store. This offer is only available with purchases completed online, and for only a limited time. A perennial favorite, Getting Started is updated every year with the latest amateur satellite information, and is the premier primer of satellite operation. The 186 page book is presented in PDF format, in full color, and covers all aspects of making your first contacts on a ham radio satellite.

Please take advantage of this offer today by visiting the AMSAT store at https://www.amsat.org/shop/ and selecting any membership option. While there, check out AMSAT’s other items, including the M2 LEOpack antenna system, Arrow antennas, AMSAT shirts, and other swag. Be sure to view your cart before going to checkout. If you add a membership and then go directly to checkout, you’ll never see an option to add your free gift.

Fox-1Cliff carries the flight spare of the AO-85 Vanderbilt University Low Energy Proton (LEP) radiation experiment, and the standard Fox-1 Penn State University–Erie gyroscope experiment. Virginia Tech provided a VGA camera which is the same as AO-92 but will provide images at a higher 640 x 480 resolution. These non-SSTV images will be decoded in the FoxTelem software.

Fox-1Cliff, unlike the other three Fox-1 FM spacecraft, does not have an active AFC (Automatic Frequency Control) on the uplinks.

Fox-1Cliff’s Data Under Voice (low-speed telemetry) will be the same as for AO-85, AO-91, and AO-92. It will be supported by the same FoxTelem software already released.

As with AO-92, a high-speed mode will be used to support the Virginia Tech VGA camera experiment. This mode will be active for 40 minutes by ground command before reverting to standard U/v repeater voice operation.

Fox-1Cliff is named in honor of long-time AMSAT member, contributor, and benefactor Cliff Buttschardt, K7RR (SK), who passed away in 2006. Cliff’s contributions to AMSAT and other amateur satellite programs, including serving as an adviser during the initial development of the CubeSat specification at California Polytechnic State University, earned him the Lifetime Achievement Award from Project OSCAR in 2006.

CAMSAT Submits Frequency Coordination Requests for 3 Satellites Scheduled for September 2018 Launch

CAMSAT, the Chinese Amateur Satellite Group, has submitted requests to the IARU for frequency coordination for three new amateur satellites.

CAS-5A is a 6U CubeSat with several amateur transponders: A 30 kHz wide 15 meter to 10 meter linear transponder, a 15 kHz wide 15 meter to 70 cm linear transponder, a 30 kHz wide 2 meter to 70 cm linear transponder, and a 2 meter to 70 cm FM repeater. The satellite also has 10 meter and 70 cm CW beacons as well as a 70 cm 4.8k / 9.6k GMSK telemetry downlink.

CAS-5B is a 90 mm L x 80 mm W x 50 mm H 0.5 kg femtosatellite with a 70 cm CW beacon.

CAS-5A and CAS-5B are scheduled to launch in September from Jiuguan Launch Center into a 539 km x 533 km 97.5 degree inclination orbit.

CAS-6 is an amateur payload aboard a 50 kg microsatellite with a 20 kHz wide 70 cm to 2 m linear transponder, a VHF CW beacon, and a 4.8k GMSK telemetry downlink. Launch is planned from a Sea Launch Pad from the China Academy of Launch Vehicle Technology in September into a 579 km x 579 km 45 degree inclination orbit.

CAS-5A coordination request: http://www.amsatuk.me.uk/iaru/formal_detail.php?serialnum=619

CAS-5B coordination request: http://www.amsatuk.me.uk/iaru/formal_detail.php?serialnum=620

CAS-6 coordination request: http://www.amsatuk.me.uk/iaru/formal_detail.php?serialnum=622


AO-92 Commissioned, Open for Amateur Use

On the 03:25 UTC pass on January 26, 2018, AMSAT Vice President – Engineering Jerry Buxton, N0JY, announced that AO-92 had been commissioned and formally turned the satellite over to AMSAT Operations. AMSAT Vice President – Operations Drew Glasbrenner, KO4MA, then declared that AO-92 was now open for amateur use. Audio of the handover and first operational pass can be heard here:


Initially, the U/v FM transponder will be open continuously for a period of one week. After the first week, operations will be scheduled among the U/v FM transponder, L-Band Downshifter, Virginia Tech Camera, and the University of Iowa’s High Energy Radiation CubeSat Instrument (HERCI).

Schedule updates will appear in the AMSAT News Service Weekly Bulletins and will also be posted to the AMSAT-BB, AMSAT’s Twitter account (@AMSAT), the AMSAT North America Facebook group, and the AMSAT website at https://www.amsat.org/satellite-schedules/

AO-92 was launched on the PSLV-C40 mission from Satish Dhawan Space Centre in Sriharikota, India on January 12, 2018. For the past two weeks, the AMSAT Engineering and Operations teams have been testing the various modes and experiments on board. Testing has shown that both the U/v FM transponder and L-Band Downshifter work very well. The Virginia Tech camera has returned stunning photos and data from HERCI has been successfully downlinked.

AMSAT thanks the 178 stations worldwide that have used FoxTelem to collect telemetry and experiment data from AO-92 during the commissioning process. The collection of this data is crucial to the missions of AMSAT’s Fox-1 satellites. Please continue to collect data from AO-85, AO-91, and AO-92.

Radio Programming Charts

AO-92 Doppler Shift Correction (Mode U/v)


Your Transmit Frequency

(With 67 Hz Tone)

Your Receive Frequency

Acquisition of Signal (AOS) 435.340 MHz 145.880 MHz
Approaching 435.345 MHz 145.880 MHz
Time of Closest Approach (TCA) 435.350 MHz 145.880 MHz
Departing 435.355 MHz 145.880 MHz
Loss of Signal (LOS) 435.360 MHz 145.880 MHz

AO-92 Doppler Shift Correction (Mode L/v)


Your Transmit Frequency

(With 67 Hz Tone)

Your Receive Frequency

Acquisition of Signal (AOS) 1267.320 MHz 145.880 MHz
Approaching 1 1267.325 MHz 145.880 MHz
Approaching 2 1267.330 MHz 145.880 MHz
Approaching 3 1267.335 MHz 145.880 MHz
Approaching 4 1267.340 MHz 145.880 MHz
Approaching 5 1267.345 MHz 145.880 MHz
Time of Closest Approach (TCA) 1267.350 MHz 145.880 MHz
Departing 1 1267.355 MHz 145.880 MHz
Departing 2 1267.360 MHz 145.880 MHz
Departing 3 1267.365 MHz 145.880 MHz
Departing 4 1267.370 MHz 145.880 MHz
Departing 5 1267.375 MHz 145.880 MHz
Loss of Signal (LOS) 1267.380 MHz 145.880 MHz