Here I have single element Loop with unequal sides: 57 meters length and 27 meters height, like 5N0MVE as described by ON4UN. This antenna placed between two 50 meter's buildings. Actually this is very affective transmitting antenna but because of vertical polarization it's unfit for receiving. In my case it was necessary to use 1:2 matching transformer.
80/40 meters
On these two bands I use so called half Bobtail Curtain antenna. In fact it is two quarter wave verticals for 40 meters with 20 meters between one another. Approximately 30 radials 20 meters long are under both  verticals.  Matching box provides good match on both bands and voltage feeding. 

30 - 10 meters
Two sets of Log periodic Yagi are in use. Fist one (12 elements, 12 meters long and 7 meters high) is directed to Japan [45 degrees], and another (13 elements, 26 meters long and 50 meters high) has beam to North Europe and State side [290 degrees]. Both antennas made of wire and have fixed direction.