TZUTC: -0500
MSGID: 400.fidonet-ls_arrl@1:2320/33 28a4ae1d
PID: Synchronet 3.20a-Win32 master/a59d7d36d Apr 13 2023 MSC 1929
TID: SBBSecho 3.20-Win32 master/a59d7d36d Apr 13 2023 MSC 1929
BBSID: TBOLT
CHRS: ASCII 1
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
--- SBBSecho 3.20-Win32
 * Origin: The Thunderbolt BBS - Little Rock, Arkansas (1:2320/33)
SEEN-BY: 1/19 123 15/0 16/0 19/10 37 90/1 105/81 106/201 116/17 18
SEEN-BY: 123/10 130 131 142/104 153/7715 154/10 30 40 50 700 203/0
SEEN-BY: 218/700 840 220/90 221/1 6 360 226/18 30 227/114 229/110
SEEN-BY: 229/112 113 206 307 317 424 426 428 470 664 700 240/5832
SEEN-BY: 266/512 280/5003 282/1038 301/1 317/3 320/119 219 319 2119
SEEN-BY: 322/0 757 335/364 341/66 342/200 396/45 423/81 460/58 633/280
SEEN-BY: 712/848 2320/0 33 105 304 401 3634/12 4500/1
PATH: 2320/33 105 154/10 221/6 1 320/219 229/426