Antenna platform.

A directional antenna is a bit of a problem, since it is not small for

72Mhz. The new 2.4Ghz R/C radios might be a better bet. Next, the R/C A/C must transmit the GPS location. The GPS data transmitter may cause problems with the R/C receiver. Finally, elevation of the R/C A/C may be a problem with a really directional antenna, and require height as well as bearing tracking. Out of direct sight operation is highly frowned upon for security reasons. A small amount of C4 in a R/C A/C is a terrorist weapon.

Let's not mention this out load please... If anyone would actually do this, model airplane hobby as we know it would be gone. In the U.S. at least :) Joke aside, it's actually not very hard to do something like that with all the technology available to ordinary consumers. I admire the folks that managed to get a model airplane from Canada (was it?) to Ireland. That could not have happened without this tech.

Whats the application?

In article , Stefan Pettersen wrote: | >Snip< | > A directional antenna is a bit of a problem, since it is not small for | > 72Mhz. The new 2.4Ghz R/C radios might be a better bet. | > Next, the R/C A/C must transmit the GPS location. The GPS data transmitter | > may cause problems with the R/C receiver. | > Finally, elevation of the R/C A/C may be a problem with a really | directional | > antenna, and require height as well as bearing tracking. | > Out of direct sight operation is highly frowned upon for security reasons. | > A small amount of C4 in a R/C A/C is a terrorist weapon.

A really poor terrorist weapon.

Landing your plane on a specific spot right in front of you is difficult enough. Deliberately hitting something hundreds of feet away is almost impossible.

And then even assuming you could precisely hit your target, a small amount of C4 wouldn't do much damage.

Sorry, but R/C planes make really poor cruise missiles.

A molotov cocktail would be a lot more effective.

| Let's not mention this out load please...

Oh, because nobody else has considered this?

| If anyone would actually do this, model airplane hobby as we know it | would be gone.

Maybe, maybe not. But certainly, not talking about it on r.m.r.a isn't likely to make a big difference in it either way.

| In the U.S. at least :) | Joke aside, it's actually not very hard to do something like that with all | the technology available to ordinary consumers.

It's harder than you might think. It's doable, but not easy.

| I admire the folks that managed to get a model airplane from Canada (was | it?) to Ireland. That could not have happened without this tech.

It could have, but would have been much more difficult. Fly the plane from a boat that follows it? It's possible.

Since the FAI recently moved this record into a category for autonomous flight, I can see him doing the flight again, but this time controlling it the entire way -- he does like his records.

Put an antenna on a hat. When you move your head to look at the airplane, the antenna will point at it.

Of course, you will look like a geek!

"Doug McLaren" skrev i melding news: snipped-for-privacy@frenzied.us...

Yeah Osama, you can do better than that! :) But really, it's not that hard with technology that I mentioned. It's hard to hit a spot on another continent with a model airplane too, but IT has been done. Not a big issue though. Just a remark I wrote when bored. Hehe..

"Morgans" skrev i melding news:VOoai.66$ snipped-for-privacy@newsfe03.lga...

Probably the best idea yet! And it requires no extra batteries either :)

"Amit Bhatia" skrev i melding news:f473vv$95l$ snipped-for-privacy@zinnia.noc.ucla.edu...

Could you tell us why you want to do such a thing?

Stefan Pettersen