
Mountains are temporary. All are in the queue for demolition, eventually. So is the whole planet. I explain that in The Universe is a Startup.
Blogs are more like beach sand. Or a whiteboard. So is the whole Web. In the old days we thought it was a library. Now we know it’s not. (Though the Internet Archive truly is, and that’s why we love it.)
On Saturday this blog and the one behind that first link—my personal one, which I’ve had at blogs.harvard.edu since 2007, will be gone from that domain. So will ProjectVRM, which I started at the Berkman Klein Center in 2006, and remains very active.
The challenge now is to migrate them to new domains.
Those qualify as infrastructure too. While they last.

To answer the question Where are SiriusXM radio stations broadcasted from?, I replied,
If you’re wondering where they transmit from, it’s a mix.
SiriusXM transmits primarily from a number of satellites placed in geostationary orbit, 35,786 kilometres or 22,236 miles above the equator. From Earth they appear to be stationary. Two of the XM satellites, for example, are at 82° and 115° West. That’s roughly aligned with Cincinnati and Las Vegas, though the satellites are actually directly above points along the equator in the Pacific Ocean. To appear stationary in the sky, they must travel in orbit around the Earth at speeds that look like this:
- 3.07 kilometres or 1.91 miles per second
- 110,52 kilometres or 6,876 miles per hour
- 265,248 kilometres or 165,025 miles per day
Earlier Sirius satellites flew long elliptical geosynchronous orbits on the “tundra“ model, taking turns diving low across North America and out into space again.
Satellites are also supplemented by ground repeaters. If you are in or near a site with repeaters, your Sirius or XM radio may be tuned to either or both a transmitter in space or one on the ground nearby. See DogstarRadio.com’s Satellite and Repeater Map to see if there is one near you.
In addition, SiriusXM also streams over the Internet. You can subscribe to radio, streaming or both.
As for studios, those are in central corporate locations; but these days, thanks to COVID-19, many shows are produced at hosts’ homes. Such is the case, for example, with SiriusXM’s popular Howard Stern show.
So, to sum up, you might say SiriusXM’s channels and shows are broadcast from everywhere.
I should add that I’ve been a SiriusXM subscriber almost from the start (with Sirius), and have owned two Sirius radios. The last one I used only once, in August of 2017, when my son and I drove a rental minivan from Santa Barbara to Love Ranch in central Wyoming to watch the solar eclipse. After that it went into a box. I still listen a lot to SiriusXM, almost entirely on the phone app. The rest of my listening is over the Web, logged in through a browser.
Item: a few days ago I discovered that a large bill from SiriusXM was due to a subscription for both the radio and the Internet stream. So I called in and canceled the radio. The subscription got a lot cheaper.
I bring this up because I think SiriusXM is an interesting one-company example of a transition going on within the infrastructure of what we used to call radio and would instead call streaming if we started from scratch today.
In The Intention Economy (Harvard Business Review Press, 2012), I saw this future for what we wouldn’t call television if we were starting from scratch today (or even when this was published, eight years ago):

Today we’d put Netflix, Amazon Prime, YouTube TV and Apple TV in the upper left (along with legacy premium cable staples, such as HBO and Showtime). We’d put PBS stations there too, since those became subscription services after the digital transition in 2008 and subsequent spectrum sales, which reduced over-the-air TV to a way for stations to maintain their must-carry status on cable systems. (Multiple “repacks” of TV stations on new non-auctioned spectra have required frequent “re-scans” of signals on TVs of people who have antennas and still want to watch TV the old-fashioned way.)
Over-the-air radio is slower to die, but the sad fact is that it has been terminal for years. Here’s the diagnosis I published in 2016. I’ve also been keeping a photographic chronicle of radio in hospice, over on my Flickr account for Infrastructure. A touching example of one station’s demise is Abandoned America’s post on the forgotten but (then) still extant studios of WFBR (1924-1990) in Baltimore.
Like so much else, over-the-air radio is being subsumed into Internet streams and podcasts (in the two Free quadrants above).
Want to have some fun? Go to RadioGarden and look around the globe at streams from everywhere. My own current fave is little CJUC in Whitehorse, Yukon. (I list many others from earlier explorations here.) All of those are what we call “on” the Internet. But where is that?
We can pinpoint sources, as RadioGarden does, on a globe, but the Internet defies prepositions, because there is no “there” there. There is only here, where we are now, in this non-place, a functionally vast but geographically absent non-place: a giant zero with no distance and no gravity because its nature is to defy both. I’m in Santa Barbara right now, but could be anywhere. So could you.
On the Internet, over-the-air TV and radio are anachronisms, though charming ones. Like right now, as I’m listening to Capricorn FM from Polokwane, South Africa. (“Crazy up-tempo hip-hop” is the fare.) But I’m not listening on a radio, which would need to tune in 89.9fm, within range of the transmitter there. I’m here, on (or in, or through, or pick-your-preposition) the Internet.
Or consider the case of KSKO/89.5 in McGrath, Alaska, population 319. Here’s how it looks on Radio.Garden:

Geographically, McGrath elongates the meaning of “isolated.” No roads lead there from elsewhere. Visitors come and go to other parts of the world by plane, dogsled, or boat during months when the Kuskokwim River isn’t frozen. (The name is derived from the Yup’ik words for “big slow moving thing.”) In Coming Into the Country, the best book ever written about Alaska, John McPhee says “If anyone could figure out how to steal Italy, Alaska would be the place to hid it.” Power-wise, KSKO is just 90 watts, with an antenna on a pole beside the station. Since the population of McGrath is just 319, and nearly all are within shouting distance of each other, it doesn’t need to be bigger.
What matters, however, is that I’m listening to KSKO right now in Santa Barbara. (Before that I was digging the equally community-involved KIYU in Galena, 130 miles away, where the station a few minutes ago reported a temperature of -30°f. With “freezing icy fog” coming, a high of -15°f and a low tonight of -40°f. Fun.)
A few years ago my teenage son asked me what the point of “range” and “coverage” was for radio stations. Why, he wondered, was it a feature rather than a bug that radio stations’ signals faded away as you drove out of town? His frame of reference, of course, was the Internet. Not the terrestrial world where distance and the inverse square law apply.
Of course, we’ll always live in the terrestrial world. The Internet may go away, or get fractured into regions so telecom companies can bill for crossing borders and not just for use, or so governments can limit what can happen in their regions (as we already have in some countries, most notably China). But the Internet is also an infrastructural genie that is not going back in the bottle. And it is granting many wishes, all in a new here.