Mobile Phone

Radio

Moonraker Radio Supplies

CPC

RS Components - Register an account for free delivery

Rapid electronics

Proto-pic

Spirit Circuits PCBs. Free naked board service

Gumstix

Laptops

Linksys NSLU2 (Slugs)

PC/104

Atmel microcontrollers / Bascom AVR

Useful USB interface/programmer

Arduinos

Uputronics Radios,GPS and prebuilt trackers

Spark Fun

Random AeroSpace

Balloon News web store

Ebay

NovaLynx

Scientific Sales

Kaymont

Project aether on Amazon

PAWAN Weather Balloons

Spherachutes - Prompt replies to questions and customises chutes, recommended. Ask for the balloon spill-hole cross modification. That is an 'X' of rope across the center hole in the chute to allow you to attach the load rope on up to the balloon to.

Custom Cutdown devices by WA4ADG

Custom Iridium Satellite Trackers by WB8ELK

Hindleys - Styrofoam Sheets

Clove Technology - Brodit Phone & Tablet Mounts (useful for chase car tablet apps)