Living in metro Melbourne you would think internet (4G) would be available but alas not always so.
We are approximately 1.5km as the crow flies from a tower (telstra) yes there is some minor topography
blocking a full visual.

On my Netgear modem I cant get any more than 1 to 2 bars of signal strength. and speeds vary.
No rhyme or reason as in time of day just all over the shop.

Is there something I can do to enhance my signal strength ? or I am I not understanding something?

We dont do cabled internet due to frequently travelling.