QG - can you tell me exactly what you mean with the radio remote ? i have seen an elinchrom system for remotely
firing flashes at far distances, but i'm not sure if that's what you're talking about?
A bit of advertising, but not too much:
These thingies.
They come in a few different versions, and are sold on eBay by many sellers.
Mind that you get a cheap one: a lot of sellers have found these things, and are flogging them for multiples of what you can get them for when you shop around a tiny bit.
Don't let the "Canon" thing distract you. They are sold with all sorts of plugs, but you probably will have to change that for one that fits your camera anyway. So any will do.
They have a two-step release, half depressed to activate the autofocus
, full depressed to release the camera. You can wire a replacement plug to use either (or both) contact.
There is a slightly more sophisticated version too, which has an additional delay. A self timer, if you like.
But that's not something you'll need.
These thingies work very well.
I bought a couple for approx. US$ 15 each, including shipping. No pocket wizard or Elinchrom sky port (or whatever these thingies may be called) can match that.