This past month a Jet Rally was cancelled early in the event when the discovered there was multi channel random radio interference. A very expensive turbine went in and the suspect was interference. In the past two weeks a serious injury to a fellow flyer of a TOC quality gasser, with the carbon fiber prop doing severe damage to the individual. I posted here on this newsgroup a response to that serious injury, a dissertation on why were we still using the equivalent to reed radios, when much better technology was out there. Of couse I took the usual bloggs from people.
I'm starting to be concerned that with our sue happy society, consumer protectionism and government interference we could be one bad accident from loosing a hobby. There are accidents that can't be avoided, I'm not suggesting you can make our hobby bulletproof. And there are measures each of us should be doing such as preflights, routine maintenance, following safety codes, etc. Nothing can substitute for those.
BPL is getting a lot of press as a potential interference causing problem. Radio control cranes, high power beeper towers, as well as other sources generate pottential RF interference for our RC communications.
We even generate interference, most of it accidentally when somebody mistakenly turns on a transmitter on the same frequency. There have been incidents of malacious interference with people intentionally shooting someone down.
Were I am headed here, is that wireless technology for cell phones and computers have revolutionized the how devices communicate via wireless protocols. The wireless computer network (wifi) 802.11_ is generating a very high level of acceptance with Internet hot spots in cafe's, hotels, park, communities... That protocol is an error checking, error correcting protocol. By that I mean that errors are corrected in the background and the users don't notice. Wifi also is designed to have many simaltaneous users without ever having to worry what frequency they are on. The most popular wifi is 802.11b, and guess what folks it only utilizes 3 channels, and can move data at eleven million bits per second. And maybe more important the non recurring development costs of the components is all done, and they are dirt cheap.
Doing a little simple math on the amount of data an RC pcm transmitter sends, we could put over 1000 airplanes in the air simultaneously at one field utilizing this or similar technology. ( Of course we know we don't need 1000 airplanes flying at the same time, in fact you probably couldn't fit enough fields together with overflight borders and flyers to get a tenth of that. )
Imagine now -> no frequency board would be required, you would not have to order specific frequency transmitters or receivers. You could have have a dozen fields back to back to back, unlike the 3 mile shared frequency rule that now exists. And the potential that radio interference accidentally, intentionally, or from some other source becomes almost non existent. (nothing is 100%).
You would not need to transition over a period of time like we did going to gold stickered radios. But by going to a new portion of the frequency specrum, you could leave the existing RC channels alone to be used as is for many, many more years or forever. So nobody would need to buy new equipment until they wanted.
I'm not proposing we use the identical technology that wifi uses, primarily because it has range that is less than what we need. Typical wifi is only good for 300'. But there are elements that could be used, to lower costs.
The other point I might make is that wifi is in an area of the spectrum that the FCC doesn't regulate, it could be used now if the manufacturers so desired to put the equipment out.
Food for thought, maybe something people should start talking about.
Phil