WTUP originally broadcast with 1,000 watts at 1380 on the dial, only during the daytime. About 1959, when WELO vacated 1490 to switch to 580, WTUP switched to the 1490, in order to broadcast 24 hours.
WTUP initially transmitted at 1,000 watts on frequency 1380 during daytime hours. Around 1959, when WELO moved to channel 580 by vacating 1490, WTUP shifted to the 1490 frequency in order to broadcast continuously.