For connecting computers together, you can’t beat Ethernet. If I had my way, I’d have Ethernet faceplates in every room, Cat 7 cable running through the cavities, and a gigabit switch in the loft. But currently I don’t own the house I’m living in, and that’s a lot of effort to go to on someone else’s house.
The first obvious solution is WiFi. But I find it’s annoying for anything more than normal web surfing. The signal comes and goes, latency is jittery, and playing twitch-based online games over WiFi is hopeless. I tried doing online racing with one of the Simbin titles a while ago and just annoyed everyone as my car jumped all over the track.
To the rescue comes Homeplug. These gadgets plug into the wall and have an network socket on them. They use the electrical wiring in your home to talk to each other, and by all accounts you can get good quality connections with them.
But there is a downside: amateur radio enthusiasts hate them because they leak radio waves all over the spectrum, including the HF band. An article in PC Pro about whether or not there was a real problem stirred up much controversy.
It does seem as if most of the problems are caused by Comtrend devices used by BT Vision. These apparently transmit continuously even when not in use. The Homeplug standard, meanwhile, only transmits when data is being sent between computers, and makes some effort to avoid certain frequencies used by radio hams.
However, radio hams are not convinced, and I am not convinced. Signal levels used for two way communications between continents are miniscule, and this activity seems to be at risk of being affected.
Why should I care about a bunch of old guys in sheds sending Morse code to each other? Lots of reasons:
First, I’m a geek, I have obscure hobbies, so I have a lot of sympathy for other people’s obscure hobbies. I’m the last person you will hear say, “why would you want to do that?”
Second, I’m a geek, and one day I might want to play around with amateur radio. Some of the equipment looks really cool. Just look at the ICOM IC-7800. That’s one hell of a gadget. Looking at that thing gets my geek juices flowing: that is a serious number of buttons and switches to learn how to use.
Third, I’m a geek, and there is something deeply cool about bouncing radio waves off the ionosphere that you just don’t get from the Internet. I have a big Grundig shortwave radio and I have listened to the Voice of Justice from Iran and it is great fun knowing that you’re picking up faint signals from a distant transmitter. Downloading a podcast from a web server half-way around the world is cool too, but it’s a different kind of cool.
Fourth, I’m a libertarian, and that means I know about stuff like homesteading and property rights. These guys were using the spectrum first, so have some rights over it. Now radio spectrum isn’t quite property, and there are ways to use it that don’t stop other people from using it at the same time so most of the government licensing of it could be replaced with technology. But as long as I am interfering with someone else’s enjoyment of a finite resource I am the bad guy, and that is certainly the case with HF communications.
So even though it is the best technology to solve my particular problem I reject Homeplug. I have just ordered a pair of WiFi N access points that will link the upstairs of my house to the downstairs. That should be as fast as Homeplug would be, and if it is too jitter for games, I will get a really long Cat 7 cable and hook that up just for games.
There is a chance that Homeplug will be widely adopted anyway, but hopefully it will remain a niche as most people just use WiFi. Niche users who are attracted to Homeplug should be aware of other people’s niches.