Subj : Ham Radio Terms (O) To : All From : Daryl Stout Date : Sat Sep 16 2017 12:05 am From QRZ.Com, the Icom handout, and Part 97 Of The FCC Rules - Ham Radio Glossary - An overview of amateur radio terms. Offset frequency Frequency difference between transmit and receive. OM "Old Man"; affectionate way to address a fellow ham operator, like saying "Old Buddy!" OO "Official Observer"; a volunteer of the ARRL's Official Observer program who monitors the airwaves for FCC rules violations. For more information, please see http://www.arrl.org. OSC Oscillator --- þ Synchronet þ The Thunderbolt BBS - wx1der.dyndns.org .