How wide is an SSTV signal?
How wide is an SSTV signal?
A literal term for SSTV is narrowband television. Analog broadcast television requires at least 6 MHz wide channels, because it transmits 25 or 30 picture frames per second (in the NTSC, PAL or SECAM color systems), but SSTV usually only takes up to a maximum of 3 kHz of bandwidth.
How do I tune my SSTV?
All you need to do to receive SSTV pictures direct from the space station is to connect the audio output of a scanner or amateur radio transceiver via a simple interface to the soundcard on a Windows PC or an Apple iOS device, and tune in to 145.800 MHz FM.
Is SSTV USB or LSB?
Slow-Scan Television (SSTV)
| Frequencies | 3 MHz,450 MHz |
| Frequency Range | 3 MHz – 450 MHz |
| Mode | USB, LSB, NFM |
| Modulation | FM |
| ACF | Line per minute |
What frequency is the ISS on?
145.80 MHz
A ground station contains a device capable of both transmitting and receiving radio waves near the 145 megahertz frequency. The ISS radio transmits signals at 145.80 MHz and receives signals at either 144.49 or 145.20 MHz, depending on its orbital location.
What is the most common SSTV mode?
The most popular modes of SSTV are Robot, Scottie, and Martin.
- A technical term for SSTV is narrowband television.
- Sync is 1100 to 1300 Hz; channel information is 1500 to 2300 Hz.
- SSTV Robot was developed by Robot Research Corporation.
What is the ISS repeater frequency?
145.800 MHz
Amateur Radio on the ISS
| ISS Amateur Radio Frequencies | |
|---|---|
| Mode V APRS (Worldwide APRS Digipeater) Most common operating mode. | |
| Downlink | 145.800 MHz FM |
| Mode V/U FM Voice Repeater Worldwide | |
| Uplink | 145.990 MHz FM |
How do I contact CQ SSTV?
You can call CQ by sending the image in the desired SSTV mode. The image must contain code CQ. It is good practice to place CQ test to the bottom of a picture, so a station that tunes to the frequency later finds what is going on.
What is the bandwidth required for SSTV?
The narrow baseband bandwidth of approximately 3 kHz width SSB transceivers needs to accommodate the SSTV transmission. Unlike the regular broadcast TV that has the luxury of 5-6 MHz channel bandwidth over VHF/UHF, amateur SSTV has its limitations.
What is SSTV (slow scan television)?
Slow Scan Television (SSTV) is a ham radio operating mode in which pictures are transmitted over radio, via tones of 1500-2300 Hz with synchronization pulses at 1200 Hz. I.e., it uses the same bandwidth as voice communications, rather than video bandwidth (several MHz).
What is the frequency of SSTV picture signal?
The frequency of SSTV picture signal varies from black through gray shades to white. The base bandwidth needed for SSTV transmission varies in the range of 1.0 to 3.2 kHz. It also depends on the SSTV mode, and transmission speed and also to some extent on image content.
What is an SSTV Cam?
● My SSTV Cam. Slow Scan Television (SSTV) is a ham radio operating mode in which pictures are transmitted over radio, via tones of 1500-2300 Hz with synchronization pulses at 1200 Hz. I.e., it uses the same bandwidth as voice communications, rather than video bandwidth (several MHz).