The Colorado regs don't specifically cite radios as being illegal. The regs do state (page 17, under "Illegal Activities" #21) that electronic devices to communicate information that violates any wildlife regulation or law is illegal. Seems a bit ambiguous to me... Does anyone know where it is written, if at all, that use of two way radios to actively pursue game is prohibited? I am mostly interested in this matter as it pertains to Colorado. My curiosity was sparked when I saw a video showing two archery hunters using radios to close in on a buck. For the record, I feel this is unethical and it goes against my sense of fair pursuit. Thanks to anyone that can shed some light on this for me.