The P-2 SWR meter provides accurate readings of standing wave ratio and relative forward power . . . supplying a reliable and inexpensive indicator for adjusting antenna coupler, antenna or transmitter for maximum power transfer to the antenna. Easy to build and convenient to use, the P-2 SWR meter can be permanently installed in the transmission line for continuous monitoring . . . thanks to its high power capability (one kilowatt) and its negligible insertion loss.