Small Quad of Half Wave Loops
Free Space
25.1 MHz
10 wires, inches
4        0,-31,0       0,31,0      #12
4        0,-31,0       0,-31,62    #12 
2        0,-31,62      0,-.25,62     #12
2        0,.25,62      0,31,62     #12
4        0,31,62       0,31,0      #12
4        60,-31,0       60,31,0    #12
4        60,-31,0       60,-31,62    #12 
2        60,-31,62      60,-.25,62     #12
2        60,.25,62       60,31,62      #12
4        60,31,62       60,31,0    #12
1 source
2,224,0
0 loads

This was an attempt to make an efficient compact beam, without traps or loading
coils.  While this antenna does have some gain and a nice F/B at this
frequency, the bandwidth is really too narrow and the input Z too low.  The
gain and F/B change dramatically with frequency.  Even for the narrow 12 meter
band it would have to be carefully tuned.