QRP has a growing place within our hobby. My first experience came in the 1950's when I made my first 6AQ5 transmitter to go along with a much modified World War II receiver. Of course it wasn't really called QRP but it was my station and combined with a long wire from the roof line of our home in West Orange, New Jersey to a stately cedar tree far in the back yard provided a great medium for communications. In the late 1960's Ten-Tec came out with their first manufactured QRP unit and I purchased one. It worked well in a little apartment we rented in Old Bridge, New Jersey.
Now, in my golden years (not sure what that term really means other than the fact that it takes a lot of gold to survive in our economy) I have again fallen in love with QRP. My favorite rig is the HB-1A Mark II three band, 4 watt, light weight CW transceiver.
Right now on my plate for QRP is doing an analysis on the TJ6A - 6 band, 10 Watt CW and SSB rig. See write up on this rig.