Mine was catapulted over the roof at this QTH. It goes out of the ground-floor shack window, straight up, over the roof and then down to the end of the garden where it is tied off with fishing line, leaving the end about 10 ft high. The counterpoise goes off at 90 degrees (see illustration).
At the last QTH it went 50ft up into an oak tree. It is very stealthy and a firm favourite of the QRP fraternity.
It consists of an 85ft wire fed against a 17ft counterpoise. Some books say that you don’t use the counterpoise at all on 10m. Others say that you use a 6.5ft counterpoise on 20m. You do need an ATU though.
Some even say that you should feed it as a balanced antenna through a balun, rather than as an end fed with the counterpoise connected to the earth terminal.
I have tried it both ways and it seems to work either way. The tuning is slightly twitchier using it as a balanced antenna.
The antenna works well on 80m and 40m and even gives a dipole a run for its money on 20m. I am writing this as I listen to US stations on 20m and Californian and Michigan stations are actually slightly louder on the W3EDP rather than the 20m dipole.
DX worked on this £5 wonder include 6W/DL4JS Senegal, YK9G Syria, VQ5XF Turks and Caicos, VP6DX Ducie Island and VQ9JC Diego Garcia.
The downside of the W3EDP is that it can be noisier than a dipole and watch for RF in the shack. Running it with an earth wire to a stake and a counterpoise my field strength meter shows that it isn’t too bad though. Try one.