How to find out if your common mode current choke really works

What is common mode current? It is the current that flows along the outer surface of your coax shield from your antenna back towards your radio. It can cause SWR problems, erratic behaviour of radio equipment and even RF shocks when you touch metal parts of your rig. A coax cable has three conductors! Due … Continue reading How to find out if your common mode current choke really works

How to Turn a 20+ Year Old Yaesu FT-817 into a CW Mean Machine

It was my very first HF radio. A Yaesu FT-817; the original vintage before the ND version was introduced. I was very excited; it was the perfect solution to serve my passion for getting outdoors into the Big Blue Sky Shack to play radio. I had a lot of success. My outdoor antenna was a … Continue reading How to Turn a 20+ Year Old Yaesu FT-817 into a CW Mean Machine

How to Design and Build a Field Expedient End-Fed Half-Wave Antenna for 20m, 40m and 80m

Field expedient antennas differ from home-based, permanent antennas. At a home QTH there is often plenty of room to install a larger, higher antenna. In the home shack, the radio is often capable of putting out a much more powerful signal than a field radio. Out in the field, for example at a campsite, space … Continue reading How to Design and Build a Field Expedient End-Fed Half-Wave Antenna for 20m, 40m and 80m

Why I Quit QRP (and maybe shouldn’t have)

For many years I was a dedicated QRP operator. I even took my "Portable QRP Operation" show-and-tell out on the road for presentation at ham clubs in my area. Then along came the dark, gloomy depths of the solar cycle minimum. My forays out into the Big Blue Sky Shack became a series of disappointments. … Continue reading Why I Quit QRP (and maybe shouldn’t have)