On October 1, 2001, we sent copies of complaints to you that had been filed concerning the operation of your Amateur station ND8V requested a response…. You responded by letter dated December 18, 2001, but your response was unsigned. On March 6, 2002, we returned your response for signature. In a telephone conversation on April 22, 2002, you were reminded to sign and return the letter. We have not received the letter…. If no answer is received to our October 1, 2001 inquiry by June 15, 2002, we will initiate enforcement action against your station and operator licenses…. This is the last warning you will receive about this matter.

Riley to Mike see http://www.arrl.org/news/enforcement_logs/2002/0601.html 20 May ‘02