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 broadcast with 1,000 watts at 1380 MHz during the day. Around 1959, when WELO vacated channel 1490 to use 580, WTUP switched to the 1490 frequency for continuous broadcasting.