HI, > Tuesday, November 15, 2005, 8:39:19 PM, you wrote: > > Here are how they look > > W1W > > W1AW > > WA1W > > AD4HZ > > N9URK > > WB6NOA > > 4N1UBG > > Let's do it this way... What are the rules for a valid callsign? Basicly, you see an example of each different type of callsign. Other than the patterns you see above there are no real rules. A letter in the example above means that there can only be a letter in the spot and a number in a spot means there can only be a number in that spot. There are 7 different formats and you see the one above. Did you see the regex I had in a previous post? Thanks for your response. -- Leonard Burton, N9URK leonardburton@xxxxxxxxx "The prolonged evacuation would have dramatically affected the survivability of the occupants." -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php