Break turkey frame or cut in half with kitchen shears. Place in a large Dutch oven or kettle. Add water, onion, and garlic salt. Bring to boil; reduce heat. Cover and simmer for 1 ½ hours.
Remove turkey frame. When cool enough to handle, cut meat off bones; coarsely chop. If desired, add more cooked turkey meat (enough to equal about 2 cups total). Set meat aside. Discard bones.
Strain broth through a sieve lined with 2 layers of 100 per cent cotton cheesecloth; discard solids. Return broth to Dutch oven. Stir in undrained tomatoes, bouillon granules, herb, and pepper. Stir in vegetables. Return to boiling; reduce heat. Cover; simmer for 15 minutes.
Stir in noodles. Cover and simmer for 8 to 10 minutes more or until noodles are done and vegetables are crisp-tender. Stir in cooked turkey; heat through. Serve immediately.Make-Ahead Tip: For individual servings, prepare soup and freeze in 1½ cup freezer containers, leaving a half-inch head space. Seal, label, and freeze up to 1 month. To serve, transfer 1 portion of frozen mixture to a small saucepan. Cover and cook over medium heat for 15 to 20 minutes or until heated through, stirring occasionally.