Prototype HSWR22 Hambuilder HF SWR meter using 2.2 inch TFT

*. ATMega128 Microcontroller
*. 2.2 Inch TFT LCD (ILI9341)
*. 3x FT50-43 Toroid as directional coupler
*. FWD, REF, SWR reading plus reflected coeficien, return loss(db) and match loss
*. Adjusting FWD display scale 200W, 100W 50W
*. Adjusting REF display scale 100W, 150W, 25W
*. Adjusting SWR display scale 25, 12 and 6

 

 

 

Hambuilder Team