cold sores go through several stages and generally last anywhere from one to three weeks the first symptom you notice will probably be a tingling or itching sensation on your lips chin nose or cheek this is a sign that a cold sore is forming this stage lasts one or two days after which a blister or cluster of blisters will form
Scanner (radio) A scanner (also referred to a police scanner, police scanner radio or radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.
All About Police Scanners. What are scanners? A scanner is a radio receiver that checks (scans) many channels quickly to allow you to listen to two-way radio calls. Two-way radios, used by police, fire and others, use short transmissions that occur on thousands of radio channels. There are many different types of scanners and it can get kind of confusing to decide the right one for you.