Richard Hosking wrote:

No doubt this is an easy question, but is there a way of interfacing to the
web via HF SSB/data?
I want to be able to do this from a remote location portable/backpack with
no mobile phone access and low power. The nearest infrastructure could be
several hundred km away
I could use amateur bands or possibly a commercial solution if available.
What would be the data format and where would I get more info on this?

Richard,

If you knew the regs you'd know that this is illegal on the ham bands.
The only legit way is via a WiPoP which is short range and would require
infrastructure in your area of interest. Skip it.

Rob