Digital TV
KTCA-DT and KTCI-DT began broadcasting on channels 16 and 34 on September 16, 1999. The digital signals of KTCA and KTCI are both multiplexed:
On February 18, 2009 TPT rearranged the on-air lineup. They will continue to use both KTCA-DT and KTCI-DT's transmitters but they discontinued their tpt17 service and unify all of their over-the-air channels as virtual subchannels of 2. At 9:00 am Friday, June 12, TPT ended its analog service on KTCA and KTCI.
| Channel | Video | Aspect | Name | Programming |
|---|---|---|---|---|
| KTCA-DT 2.1 | 1080i | 16:9 | tpt 2 | Main tpt 2 Programming / PBS |
| KTCA-DT 2.2 | 480i | 4:3 | tpt MN | Minnesota Channel |
| KTCI-DT 2.3 | tptLife | Main KTCI programming / PBS | ||
| KTCA-DT 2.4 | tpt Wx | Weather radar and NWS audio KEC65 |
Subchannels 2.1, 2.2 and 2.4 broadcast through KTCA-DT's transmitter while 2.3 broadcasts through KTCI-DT's transmitter. Some of the bandwidth on KTCI-DT is being reserved for future broadcast services or to lease to commercial interests. During severe weather, KTCA Channel 2.4 airs a live broadcast from NOAA Weather Radio station KEC65.
The then-new channel lineup was originally meant to coincide with the DTV transition. When the transition's mandatory cutoff was delayed, TPT announced the new lineup would still go forward and they would continue their analog service until the new cutoff. Until then KTCA-TV simulcasted tpt 2 and KTCI-TV simulcasted tptLife on their analog signals.
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