From ARVic, original post here.

With a decline in lower VHF spectrum use for several years by the Land Mobile Service the prospect of VK radio amateurs getting a slice of spectrum at 70MHz is always on the agenda.

The so-called 4m band is popular in Europe and gives an alternative between the current 10m and 6m bands, and is opening up spectrum exploration possibilities.  The WIA has that band on its agenda with the ACMA but there will be a lot of work to do before a secondary allocation becomes a reality.

In the meantime nothing prevents listening on that band for signals that may appear from time to time.  The latest antenna for such a purpose is the Super J-Pole, which is an antenna consisting of a five eighth wave vertical radiator, a half wave tuning section and a half wave top section.

Such an antenna is described here.