[TowerTalk] yagi for 10-15 meter

[Peter Sundström]

 Hi ! I am looking for a dual band yagi 10-15 meter. I have a monobander
for 20M and I can’t have tree monobanders in the same tower.
Is there anybody out there who can give me an advice of some good
working dual band antenna. Maybe the Force 12  4BA is a good alternative
but I really don’t need 12 and 17 meters, I will use the system for
contesting. 
Best regards // Peter