Who was the builder?
Raleigh Tamarack. Taiwan made.
Serial 3KT0498
As found.
Old school ATB. Based on the serial number and frame features, I'd say it wasmanufactured in 1983 but it could be a 1984 model manufactured in very late 1983. Taiwanese Raleigh that we see from the 1980s are typically from Merida but that is not their format. Sorry, I don't know the manufacturer.