When Philadelphia's first radio station, WGL, began broadcasting on February 8, 1922, the station needed a tall antenna and lots of buried copper cable to transmit its signal.  Radio receivers at the time were mostly homemade and involved a piece of crystalline mineral and a wire coil.

Over many decades in Philadelphia, both the broadcasting and receiving equipment improved. In the mid-1920s this meant store-bought radios. In the 1930s this meant car radios. In the 1960s this meant transistor radios. In the 1970s this meant boom boxes. And, in the 1980s this meant Walkmen. But, despite these improvements, the fundamental technology of big towers sending a signal through the air to a radio receiver remained the same.

In 1994, there was a new way for Philadelphia consumers to listen to the radio. That was the year local stations across the country began streaming their signals over the internet and listeners could use their computers (later their smartphones and smart speakers) as receiving devices. No big antennas, no wires, and no actual radio needed.

In 2021, according to Nielsen, Philadelphia radio reaches more local consumers than any other advertising media option.

Neilsen finds, too, that 34.5% of all consumers who listen to a Philadelphia radio station over-the-air will, at some point during the month, also connect to a local station via the internet. 

According to Nielsen, 4.1 million adults in the Philadelphia area have access to the internet, equivalent to 95.7% of the population. On average, local consumers are spending 10.98 hours per week online.

Philadelphia millennials, the first generation that grew up in a digital world, spend considerably more time online. Nielsen reports that, on average, Philadelphia's 25-39-year-old consumers are clocking 13.95 hours connected to the internet.

So, how are Philadelphia consumers spending their time online?

According to Nielsen, streaming audio and video content, social networking, checking the weather, and banking are the top online activities for Philadelphia consumers each month.

Delaware Valley business owners are expected to invest $1.3-billion during 2021 to advertise to consumers connected to the internet. This forecast was produced by Borrell Associates, a company that tracks business advertising expenditures across the country.

These online marketing dollars will be spent on banner advertising, search engine marketing, email, as well as audio and video advertising. This is all to capture the attention of shoppers and buyers as they go about their connected days.

According to Nielsen, 95.2% of adult consumers in the Philadelphia area have access to the internet. They connect, primarily, with desktop and laptop computers; smartphones; or tablets.

Ninety-seven percent of Delaware Valley adults spend at least one hour per week online, with most spending at least 10 hours connected.