This small antenna is the best solution in 70 MHz. for initiate or have another band cover in a corner of the roof.
The EAntenna 70MOX only have 62 cm (24″) boom and 1,8 Kg. with incredible gain of 6,05 dBi and near 40 dB of F/B report.
Start your work in this band within not big expenses and light weight antenna.
More info here