QO-100, also known as Es’hail-2 is a geostationary amateur radio satellite. It can be used by large parts of the world, including Europe, Africa, (parts of) South America and Asia. The satellite works as a linear transponder. It receives a specific range in the 2.4 GHz (13cm) band and sends it back to earth on 10 GHz (3cm). In order to generate such a 2.4 GHz signal and transmit it to the satellite conventional radio technology with transverters could be used. I chose a different route and ...| KittenLabs
One of the rarest ThinkPads is the ThinkPad PowerSeries 820, running a Power PC 603e at 100 MHz. It’s code name is Wiltwick, the type designator (used in Windows) is 6040. It uses an 800x600 TFT, WD90C24A/G10 graphics and has a 1.2 GB SCSI HDD. 48 MiB RAM is the maximum configuration.| KittenLabs
There’s a number of different ways to distribute an ethernet signal throughout a building. The most common types being: twisted pair wiring fiber optic cable WiFi (2.4 GHz, 5GHz) powerline (also called PLC, IEEE 1901) In my application, running cables wasn’t easily possible, so twisted pair and fiber connections were out of the game. PLC-based networking is absolutely unacceptable as a ham radio operator, because these devices produce lots of interference and noise. The distance is a bit ...| KittenLabs
