This is my favourite website.
www.lowtechmagazine.com
Its strapline is 'doubts about progress and technology'. The proprietor posts about an article a month, well-researched and cited, covering old methods of doing things that we now assume have to be 'high tech'.
The general idea is that in order to be 'sustainable' we have to investigate ways of being that are pragmatic without subscribing to the Church of High Tech, which seems to be the prevalent religion today.
Similar to the desires of UK Vintage Radio Forum's members, the emphasis is on functional and understandable technology with a valid purpose. Articles include the mechanical transfer of power, matching demand to supply (working when the wind blows, for example) rather than sizing fossil fuel supplies to an imagined demand, a low-tech Internet, the myths of electric vehicles, how the Netherlands was dredged before steam power etc. etc.
When I first discovered it I was fascinated and stayed up all night reading the whole website.
The sister site 'No Tech Magazine' contains all the links from 'Low Tech Magazine' but also links to articles elsewhere in a similar vein through the 'No Tech Reader' posts.