TreewellMagnetWhat kind of radio? I don't have an avy bag but I built myself a little radio holder (for a cheap ham radio) out of that thick plastic poster board and some duct tape. Pretty crude but does the job. Attached it to the inside of my bag with no sew velcro. Protects the radio buttons from being pressed accidentally. Then just routed the speaker mic out to the main shoulder strap where it clips onto a bit of webbing. The cord routes out from the bag by a double zipper which I just have a clasp to keep the two zippers together so the cord doesn't open the bag.
You could get a seamstress to modify the outside to add webbing for securing a radio either to the shoulder strap or somewhere it doesn't interfere with the airbag.
You could also try rocky talkies which can be secured to the bag with a carabiner. Can put them on a shoulder strap for easy access.
The radio is BCA BC Link Two Way Radio 1.0, nothing too fancy.
The current backpack I have now has a zipper on the bottom right side to hold the base of the radio, and the cord comes out through there, and I'm able to secure the walkie talky to the backpack top right shoulder using a clamp that is provided with the radio. I've attached some photos so you can see how it works, its really straight forward. I'm just confused that the newest state of the art Black Diamond Avalanche pack doesn't address a location to place a radio unit on the pack. I feel like I must be missing something!
Let me know your thoughts and if you see this send me a photo of your setup you made with your pack!
Cheers,
Bdonn