Project ............ SWR meter
POWER /SWR with built-in frequency counter. Practical implementation: once the instrument has been procured (they can be found at various electronics exhibitions), the implementation requires more mechanical than electrical skill. In fact, as can be seen from the extremely simple electrical diagram, no problems should arise: in the photo on the right you can see the detail of the SWR connections: the dimensions as well as the diameter of the wires are specified in the electrical diagram. The central connection on the left goes to the switching relay because, as can be seen on the front panel, it is used to switch from the HF antenna to the VHF (50 MHz): naturally the frequency meter is optional and can easily be omitted, however it is described in the PIC Freq section .