Category: Space and HAM radio

SSTV – Slow Scan Television is a type of digital radio transmission, that sends pictures using a radio station and

I inserted few minutes of recording from the ARISS YouTube Channel at the beginning of the transmission, since I didn’t

An Arduino controller for home-made or commercial antenna rotators. Displays on LCD the target and antenna azimuth and elevation, reads

 I used some minutes of recording from ARISS YouTube Channel, to make it more comprehensible. I also inserted the

Bad news first: Meteor M2-2 no longer transmits Earth images on 137 MHz. Meteor M N2-2 is a Russian weather

Rotator de antenă cu Arduino – Partea 1 EN: I started this project out of curiosity and ambition to learn

The bottom line is that in VHF, both antennas perform very well, with SWR close to 1: 1. In UHF,

This 5W portable from Baofeng (China) has been setting the internet on fire for years, and has fans and haters

EN On April 6, 2019, one era of global positioning system ended and another began, an event that affected some

EN December was even more productive in terms of transmissions from the International Space Station. I do not know if

VOX (voice activated transmission) activates the station’s transmission (press PTT) when it detects sound (modulation signal) at the microphone or

METEOR-M2 (and M2_2) are two Russian satellites, which send images of earth from space, like the Americans NOAA-15, 18 and