In the past, communications technology was a primitive affair. Before the printing press was invented in the early 15th century, people could only really communicate by talking to one another. If somebody wanted to hear the latest and greatest news, he could not purchase a newspaper. Instead, he had to walk down to the village green and speak to the town crier (or the town gossip).
Everything changed when the printing press was invented in the early 15th century. Now, suddenly, printers could print newspapers which told people about the latest and greatest news events that were happening in the town or city which published the newspaper. These newspapers did not settle for current events, though; they also contained product reviews, opinion editorials, and even funny cartoons.
Communications technologies were once again revolutionized in the early 20th century when scientists and inventors created the radio. Suddenly, the news items which had dominated newspapers shifted to the new format, as did all of the other kinds of shows that I mentioned in the last paragraph. Additionally, new formats started to appear as well. Some of these new kinds of shows included tech talk radio shows (which are sometimes called tech chat shows and technology radio online programs).
These tech talk radio shows have proven to be extremely popular. Specific formats for these tech talk radio shows vary from city to city. However, most tech talk radio shows utilize a few basic features. For example, most tech talk radio shows include a section in which the commentators review new gadgets and technologies. Listeners appreciate these segments because they allow them to get a sense for which new gadgets are solidly put together and which ones are pieces of junk which might fall apart after a few weeks.
Additionally, many tech talk radio shows include a segment in which the commentators talk to scientists and inventors who are responsible for putting these gadgets together. Listeners who regularly listen to these tech talk radio shows like these segments because they allow them behind the scenes access, so to speak.