Broadcasting SSTV-TV with the ISS
SSTV or Slow-scan television is the transmission of images over narrow-band radio channels in the HF or VHF bands. Transmission of one frame can take up to several minutes and, of course, it is difficult to call it usual TV, rather it is a fax. Nevertheless, amateurs are quite active in this form of communication.
This Saturday, April 11, 2015, from 13.00 (10:00 UTC) and until 0:00 (21:00 UTC) Moscow, the SSTV will be transmitted from the ISS to commemorate the 54th anniversary of Y. Gagarin’s flight.
Transmissions from the ISS occur regularly and you can look at the images previously taken by radio amateurs in this gallery . The transmission will use the high resolution SSTV in PD180 mode (resolution 640x496 pixels). Transmissions will be broadcast at a frequency of 145.800 MHz. The previous time, 12 different photos were sent with a pause of 3 minutes between transfers. To receive an image, you need a radio receiver with an antenna for a 2 meter range and a program that converts sound into an image.
The method of receiving SSTV is not different from that described in the article " Satellite - it is very simple " using RTL SDR. For this task, the reception kit is supplemented with software for image decryption - this is free software MMSSTV .
And the solution of the problem is reduced to the previous one.
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Those who have neither antenna, nor RTL SDR can try to use Web SDR - a radio with a web interface located southwest of London (Latitude: 51.23, Longitude: -0.82).
This Saturday, April 11, 2015, from 13.00 (10:00 UTC) and until 0:00 (21:00 UTC) Moscow, the SSTV will be transmitted from the ISS to commemorate the 54th anniversary of Y. Gagarin’s flight.
Transmissions from the ISS occur regularly and you can look at the images previously taken by radio amateurs in this gallery . The transmission will use the high resolution SSTV in PD180 mode (resolution 640x496 pixels). Transmissions will be broadcast at a frequency of 145.800 MHz. The previous time, 12 different photos were sent with a pause of 3 minutes between transfers. To receive an image, you need a radio receiver with an antenna for a 2 meter range and a program that converts sound into an image.
The method of receiving SSTV is not different from that described in the article " Satellite - it is very simple " using RTL SDR. For this task, the reception kit is supplemented with software for image decryption - this is free software MMSSTV .
And the solution of the problem is reduced to the previous one.
')
Those who have neither antenna, nor RTL SDR can try to use Web SDR - a radio with a web interface located southwest of London (Latitude: 51.23, Longitude: -0.82).
Source: https://habr.com/ru/post/365373/
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