Some quick logs:
SS = Spanish language
EE = English language
26555 LSB - SS Latin American SSB Calling Channel, Dominican Republic, Mexico and Puerto Rico heard
26565 AM - SS OMs talking, likely truckers.  Lots of noise toys/roger beeps heard
26575 AM - SS Lots of stations heard at once
26585 AM - SS Mexican Calling Channel, very very active 
26615 AM - SS "Puerto Rico Calling" 
26695 AM - SS YL taxicab dispatcher, weak
26705 AM - SS "The Spanish Superbowl" - Puerto Rico, Florida, etc.  VERY loud and overmodulated signals 
26725 AM - SS YL taxicab dispatcher talking to several OM taxi drivers.  YL's radio has a multi-tone roger beep
26735 AM - SS YL taxicab dispatcher (single roger beep) 
26795 AM - Unknown language, can only hear roger beeps, etc
26885 AM - EE Truckers
26905 AM - SS Taxicabs talking to each other, with YL dispatcher 
26945 AM - EE Truckers
26965-27405 - Legal 40 channel CB Band (North America)
26965-27855 - Legal CB 80 channel Band (Brazil and several other South American countries)
27435 USB - SS, with very strong OTH Radar bursts 
27445 LSB - EE, southern accents 
27455 USB - SS Latin American SSB Calling Channel 
27515 AM - SS YL taxicab dispatcher (very strong S9++ signals)
27515 LSB - EE "Knight Patrol" CB Club Calling Frequency (Caribbean area) with heavy QRM from 27515 kHz AM
27530 USB - SS, weak
27555 USB - International Calling Frequency, English and Spanish heard, with OTH Radar QRM 
27575 AM - SS, weak, possibly taxis/truckers??
27665 LSB - SS
27675 USB - SS
27690 USB - SS
27695 USB - SS
27705 USB - SS