When considering buying from a breeder, verify that you're buying from a reputable breeder by checking out their licensing, internet reviews and ask for local references such as a vet. (tampabayvets.net)
Single - frequency receivers can be used but, because of the errors introduced by the atmosphere, they can only measure movement relative to local reference points, such as each other. (newscientist.com)
You'll also want to establish yourself within your community by including local references and increasing your local networking efforts. (blog.simplyhired.com)