Type in the serial number on this web page and you get:
Cyclone series mast
The Cyclone series is specifically designed for remote area installation and maintenance. No cranes are needed, sections are lightweight, and provisional repairs can be carried out without recourse to specialized parts and labour.
It is actually slowed down slightly compared to authentic morse code. There are several applications that can decode morse code. Another alternative is to record the sound yourself and slow it down. Audiacity is one free alternative.
The message consists of 18 characters.
12 letters followed by 6 digits. Notice that all the digits in morse code are five beeps.