Adjusting the Antenna’s Orientation

As a satellite such as the International Space Station (ISS) orbits the Earth, the orientation of its transmitting antenna changes with respect to the Earth. It could have an orientation anywhere from horizontal to vertical. To get a good signal, the Earth-based receiving antenna must match the orientation of the ISS’s transmitting antenna, especially when using only a hand-held tranceiver with stock antenna. An antenna with a pair of elements placed at right angles with each other (such as a cross Yagi or a cross dipole) is best suited for satellite work, because elements at right angles can receive signals from both horizontally and vertically-oriented antennas. In this video, I have demonstrated this effect and shown how changes in antenna orientation affects the strength of the signal received.

To learn more about receiving SSTV images from the ISS, click here.
To learn more about my progress in amateur radio, click here.

Related link: Receiving SSTV Transmissions from the International Space Station

To subscribe to this site, click here.
© Anthony Urbano (Manila, Philippines)

 

Advertisements

Receiving SSTV Transmissions from the ISS

Here’s a short demo on how I used a two-way radio and a smart phone to receive Slow Scan Tele-Vision (SSTV) images from the International Space Station (SSTV) as it orbits the Earth at a height of about 400 km. The transmission was received on February 9, at around 8 am local time, from Bacoor City, Cavite.

Equipment: Yaesu FT60
Decoder app: Robot 36
ISS locator app: ISS Detector
Frequency: 145.8 MHz

To learn more about receiving SSTV images from the ISS, click here.
To learn more about my progress in amateur radio, click here.

Related link: Receiving Transmissions from Space

To subscribe to this site, click here.
© Anthony Urbano (Manila, Philippines)

SSTV Image from the ISS (October 29, 2018)

SSTV October 29, 2018, 241 am 4G1AWN
SSTV image received and decoded from the International Space Station (ISS) as it passes over the Philippines on October 29, 2018, around 2:41 local time

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).

To learn more about receiving SSTV images from the ISS, click here. To learn more about my progress in amateur radio, click here© Anthony Urbano (Manila, Philippines)