The Modern Mix of RF and Streaming
There was a time when the word "radio" meant one thing: electromagnetic waves carrying sound through the air from a transmitter to a receiver. That definition held for about a century. It no longer does.
Today, "radio" is a sprawling category that includes FM broadcasts, internet streams, satellite feeds, software-defined receivers accessed through web browsers, repeaters linked across continents via the internet, and hybrid systems that move audio between RF and IP networks multiple times before it reaches a listener. The boundaries between "radio" and "internet" have not just blurred. In many cases, they have dissolved entirely.
This is not a crisis. It is an evolution, and one that anyone who cares about radio, whether as a ham, a listener, or a broadcaster, should understand.
Echolink and IRLP: Hams Got There First
Amateur radio operators were among the first to merge RF and internet in a deliberate, systematic way. Echolink, released in 2002, allowed hams to connect their radios to the internet and communicate with other stations worldwide. You could key up a handheld in your backyard, hit a local VHF repeater, and that audio would travel through the internet to a repeater on another continent, where it would go back out over RF to a local ham who had no idea the signal had ever left the airwaves.
IRLP (Internet Radio Linking Project) does something similar, linking repeaters together over the internet so that a conversation on one repeater is heard on another, regardless of distance. Both systems have been running for over two decades. They are stable, widely used, and completely integrated into the ham radio landscape.
What Echolink and IRLP demonstrated is that RF and internet are not competing technologies. They are complementary. RF handles the local connection: the handheld to the repeater, the mobile rig to the tower. The internet handles the long haul. Neither could do the other's job as well. Together, they create something that neither could achieve alone.
Community Stations: Transmitter Plus Stream
Community radio stations have arrived at the same conclusion through a different path. For years, a station's reach was defined by its transmitter power and antenna height. A 50-watt community FM station might cover a 20-kilometre radius on a good day. Everyone outside that circle was out of luck.
Adding an internet stream changed the math entirely. The transmitter still serves local listeners: people in cars, people in kitchens, people who rely on radio for emergency alerts when the internet is down. The stream serves everyone else: former residents, seasonal visitors, curious listeners from other provinces, and people who simply prefer listening through a browser or an app.
The CRTC has adapted to this reality. Licensing frameworks now account for the fact that a community station's audience is no longer limited to its signal footprint. The regulatory distinction between "broadcaster" and "internet streamer" still exists on paper, but the practical difference is shrinking every year.
This hybrid model is not a compromise. It is the optimal setup for a station that wants both local reliability and broad reach. The FM signal works during internet outages. The internet stream works beyond the FM signal. Both carry the same programming. Both serve the same community, just different parts of it.
Scanners Go Digital, Then Go Online
The scanner hobby has undergone its own version of this transformation. Traditional scanning meant owning a receiver, programming in local frequencies, and listening to whatever came across the airwaves. It was entirely RF-based, and the experience was shaped by your equipment, your antenna, and your proximity to the transmitters you wanted to hear.
Then two things happened. First, public safety communications in many areas moved to digital trunked systems (P25, DMR, NXDN), which required more expensive and capable receivers. Second, platforms like Broadcastify emerged, allowing volunteers to stream their scanner audio to the internet for anyone to hear.
The result is that most "scanner listening" in 2025 happens online. A listener in Vancouver can monitor fire dispatch in a small Ontario town through a Broadcastify feed. They are hearing real radio traffic, captured by a real scanner connected to a real antenna, but delivered through the internet rather than through their own receiver. Is this "radio"? The audio originated on RF. It was captured by an RF receiver. It just took an internet detour on the way to the listener.
For ham radio operators, this shift has a direct parallel. WebSDR and KiwiSDR receivers let anyone tune into HF, VHF, or UHF activity through a web browser using someone else's receiver. You can listen to 20-metre SSB activity from a receiver in the Netherlands, or monitor a local repeater from a KiwiSDR located in the same city. The radio waves are real. The receiver is real. Your interaction with them is mediated entirely through the internet.
Software-Defined Radio: The Great Equalizer
SDR (software-defined radio) technology has been the single biggest force blurring the line between RF and internet. An SDR receiver is, at its core, a digitizer. It converts radio signals into digital data, which can then be processed by software on a computer. That processing can happen locally, on your own machine with your own dongle, or remotely, through a web interface connected to someone else's hardware.
The practical effect is that "tuning a radio" can now mean clicking a waterfall display in a web browser. The signal you are hearing traveled through the air to an antenna, was digitized by an SDR, streamed over the internet to your computer, and decoded by software into audio. Every step in that chain except the first and last involves the internet, not RF. But the experience, the content, the information, is identical to sitting in front of a traditional receiver.
Hams have embraced SDR both locally and remotely. Remote HF stations, where an operator controls a transceiver at a remote location via the internet, are increasingly common. The operator might be in a condo in downtown Toronto, but the antenna and radio are on a rural property with low noise and good propagation. The RF is real. The operating position is virtual. The contacts are genuine.
Podcasts and On-Demand: Radio Without the Schedule
Another blurring of boundaries comes from the on-demand side. Many radio stations, both community and commercial, now offer their programming as podcasts or on-demand streams after the live broadcast. A morning show that aired at 7 AM can be listened to at 9 PM. An interview segment can be isolated and shared on social media.
This time-shifting changes the relationship between broadcaster and listener. Traditional radio is synchronous: everyone hears the same thing at the same time. On-demand listening is asynchronous: everyone hears the same content, but whenever it suits them. Both are valid ways to engage with the material. Both are "listening to the radio" in any meaningful sense.
For community stations, on-demand options extend the value of every hour of programming. A volunteer who spends two hours producing a local interview segment is no longer limited to the people who happened to be tuned in during that time slot. The content lives on, findable and listenable for weeks or months after the original broadcast.
Where This Is Going
The trend is clear and irreversible. RF and internet will continue to converge. Future community stations will likely broadcast on FM, stream on the web, publish podcasts, clip highlights for social media, and distribute through smart speaker platforms, all from the same content. The "station" will be less a transmitter and more a content hub that outputs to every available channel.
For hams, the convergence will continue through remote stations, SDR, internet linking, and digital modes that already treat the internet as just another part of the signal path. The purists who insist that "real radio" means RF only will continue to have a point, philosophically. But practically, the distinction is increasingly academic.
What matters is not the delivery mechanism. What matters is whether the content serves its audience, whether the community connection is real, and whether the people on both ends of the signal, however it travels, are getting something valuable from the exchange.
Radio is not dying. It is expanding. The signal just takes more routes to get where it is going.
For more on community broadcasting, visit our community radio hub. For the Ontario-specific angle on how radio culture plays out in smaller communities, see our Eastern Ontario radio culture coverage.