I’ve received 6 SSTV images from the International Space Station (ISS) from August 3-4, 2019, from my amateur radio station in Bacoor, Cavite, using a DIY antenna and a portable radio. The app Robot 36 was used to decode the SSTV transmissions. For participating in the SSTV event, I was awarded a certificate.
To learn how to receive SSTV images from the ISS, click here.
I was invited to conduct a live satellite demo at the Philippine Navy as part of the exit presentation of DOST-Balik-Scientist CDR Leo Almazan USN (ret) at the Pascual Ledesma Naval Station in Cavite, Philippines. We’ve accessed DIWATA2 (PO-101) and had successful contact with JA6PL (Japan), DV2JHA (Pangasinan), and DU1ELT (Cotabato).
The ability to operate off-the-grid is a huge advantage when hunting satellites. Coupled with a portable antenna, this battery-operated radio setup can be easily carried to any remote DX location while requiring only very minimal prep time (5 minutes). Simply connect a satellite antenna, turn the radio on, select the pre-programmed uplink and downlink frequencies, and you are ready to make contact!
The portable satellite radio setup consists of the following:
1. Kenwood TMV71A full-duplex VHF-UHF radio with microphone 2. 12V 8AH lead-acid battery pack with volt meter 3. Sony recorder 4. Headset 5. Other accessories (not shown) such as SWR meter, patch cable, compass, flashlight, notebook, pencil, etc.
This setup has been used recently in a satellite demo at a local hamfest. Since only 5 watts of power is needed to access the FM satellites, this setup lasts for one week of use (about 50 satellite contacts) in a single charge, perfect for DX-peditions!
CQ satellite! I’ve conducted a live demo of a satellite QSO at District 1 Pakulo 2019, a local hamfest held in Tagaytay, Philippines on May 11, 2019. The demo showcased a satellite repeater’s capability to relay signals and enable two-way communications to any point in the Philippines, as well as nearby countries, using inexpensive ham radio equipment.
To the following stations I’ve worked with during the AO-91 pass: JS6DRQ, DU6DKL, DU2XXA, DU4PGS, 7J1ADJ/JR6, and JA6PL—you are all 5-9, thanks for the contact, 73!
To learn how to access satellite repeaters, click here.
Here are the Slow Scan Television (SSTV) images I’ve received from the International Space Station (ISS) from February 15-17, 2019, using a Yaesu FT60 hand-held tranceiver and a smartphone with Robot 36 app as decoder. The audio output of the radio is tapped directly to the microphone input of the smartphone for improved signal decoding.
Transmission received from the International Space Station
The International Space Station (ISS) has been transmitting images since October 28 and will continue to do so in the next few days. It transmits in SSTV format—the same format used to send images to Earth during the Apollo missions. The transmissions can be received with any radio tuned at 145.8 MHz, and a decoder app such as Robot 36 (try installing that app and decode this recording).