RTP PM137/Logo History

== RTP PM137 (first era) ==
=== 1985-1991 ===
RTP PM137 was initiated as a subchannel of RTP.
=== 1991-1996 ===
The initial rebranding was introduced on a trial basis.
It was later used as the official logo.
== RPM1 ==
=== 1996-1998 ===
The name change was planned as of April 3, 1996.
The name change to RPM1 was made official on April 29, 1996, when the RTP1 logo was changed.
=== 1998-2002 ===
=== 2002-2004 ===
== RTP PM137 (second era) ==
=== 2003 (unused) ===
=== 2004-2021 ===
The RPM1 brand has been discontinued.
This returned the brand to the initial RTP PM137.
=== 2021-present ===