The other day I found myself getting up unusually early to attend a ham radio market. 50% off everything really makes me do the most unlikely things. the haul ended up being 3 “METEOSAT Wefax” decoders and a Cisco 2950. Now, 2 of those decoders ended up being broken; in
Noaa-2 aka ITOS-D is a very old decommissioned Satellite launched in 1972. Almost 50 years after launch it was discovered that it was still transmitting a modulated signal! So I waited for a nice pass, took my helicone antenna and recorded the pass. The satellite transmits at 1697.5 MHz and
Yes, I did the thing from the Posy video. TLDR; he uses a polarizing filter and some clear plastic to selectively color only polarized light. By putting some cheap plastic in front of the filter, the polarization of some wavelengths changes. The polarizing filter then filters away those wavelengths. And