Topband: 160m Ant on 80m?

[Thomas Hoeppe]

Hello,

has anyone tried to use a 160m Vertical on 80m? The antenna is mechanical 33m high, electrical about 37m (Top-coil). So it will be nearly 1/2 lamda on 80m, and I want to feed it by a parallel-resonant cirquit. I hope to have improvements, as the trees around are about 20m high, so our 1/4 lamda on 80m ist just between the trees. A photo from the air is at QRZ.com, callsign DL0AO.
Whitch radiation behaviour can I expect?

Tom, DJ5RE/DL0AO