15 watt QRP HF L-match for portable operations. Peter VK3YE published a QRP 7 MHz to 52 MHz (40m to 6m) L-network ATU project and circuit diagram in VK’s Amateur Radio magazine , Edition 5, May 2017. I have constructed the L-match ATU and added a 5th inductor L5 4uH for matching on 3.6 MHz…