16th and 30th July 1932

Initial reports of a planned offshore radio venture appeared in the International Radio News

3rd June 1933

RXKR started broadcasting

** June 1933

The US State Department requested that the Panamanian Government revoke both the broadcasting licence for RXKR and the registration of the station's vessel, City of Panama.  

Within a few days both the ship's registration and the radio station's licence had been withdrawn, but RXKR continued to broadcast.

** August 1933

The City of Panama was seized at sea by officials from the State Department and the US Coastguard Service who towed the vessel into Los Angeles harbour.