TZUTC: -0500   
   MSGID: 498.fidonet-ls_arrl@1:2320/33 28e5479a   
   PID: Synchronet 3.20a-Win32 master/1c63f4d2c May 24 2023 MSC 1929   
   TID: SBBSecho 3.20-Win32 master/1c63f4d2c May 24 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.   
      
   AC   
   Alternating Current   
      
   ACC   
   Accessory   
      
   ACSB   
   Amplitude Compandored Sideband modulation   
      
   Adjacent-channel interface   
   When a receiver is tuned to a specific frequency and interference is   
   received on a nearby frequency.   
      
   Advanced   
   The next to highest class of U.S. Amateur Radio license. While these are   
   no longer issued, Advanced class licensees may continue to use their   
   privileges, and renew their licenses at the appopriate time. They have   
   all amateur radio privileges, except for 250 kilohertz of spectrum that   
   is reserved for Amateur Extra Class licensees.   
      
   AF   
   Audio Frequency   
      
   AFC   
   Audio Frequency Cntrol   
   Automatically compensate frequency drift.   
      
   AFSK   
   Audio Frequency Shift Keying   
      
   AGC   
   "Automatic Gain Control"; a circuit in a radio which automatically adjusts   
   the overall gain of the receiver, by optimizing receiver amplifier gain   
   automatically.   
      
   A-Index   
   Linear index for measuring the disturbance level in the earth's magnetic   
   field. The index is defined over a period of one day (Courtesy of IPS Radio   
   and Space Services, Sydney, Australia).   
      
   ALC   
   Automatic Limiting Control. Limits RF drive level to power amplifier   
   during transmit to prevent distortion.   
      
   AM   
   "Amplitude Modulation"; slang often used is "Ancient Modulation"   
   (courtesy of VE3FFK).   
      
   AMSAT   
   Amateur Satellite. Satellites used for amateur radio communication.   
      
   AMTOR   
   "Automatic Teleprinting Over Radio"; popular digital mode on HF. It is   
   a form of RTTY (radio teletype).   
      
   Amateur Extra   
   The highest U.S. amateur radio license class granted by the FCC. It   
   allows full amateur radio privileges on all bands designated to the   
   amateur radio service by the FCC.   
      
   Amateur operator   
   A person named in an amateur operator/primary/primary license station   
   grant on the ULS consolidated licensee database to be the control   
   operator of an amateur station.   
       
   Amateur radio services   
   The amateur service, the amateur-satellite service and the radio   
   amateur civil emergency service.   
       
   Amateur-satellite service   
   A radiocommunication service using stations on Earth satellites for the   
   same purpose as those of the amateur service.   
       
   Amateur service   
   A radiocommunication service for the purpose of self-training,   
   intercommunication and technical investigations carried out by amateurs,   
   that is, duly authorized persons interested in radio technique solely   
   with a personal aim and without pecuniary interest.   
       
   Amateur station   
   A station in an amateur radio service consisting of the apparatus   
   necessary for carrying on radiocommunications.   
       
   ANF   
   Automatic Notch Filter   
      
   ANL   
   Automatic Noise Limiter. Eliminates impulse and static noise peaks.   
      
   ANT   
   Antenna   
      
   Antenna Gain   
   The ratio of the power required at the input of a loss-free reference   
   antenna to the power supplied to the input of the given antenna to   
   produce, in a given direction, the same field strength at the same   
   distance (def. courtesy of Telecom Glossary 2000)   
      
   Antenna Ground System   
   Term used for an RF reference potential for some types of antennas.   
   Most unbalanced or asymmetrical antennas need a good RF ground.   
      
   Antenna Impedance   
   The impedance of an antenna at its resonance. Although an antenna's   
   impedenance fluctuates with the frequency of operation, an antenna   
   should be 50 ohms for most transceivers.   
      
   Antenna Matching   
   When the antenna's impedance at resonance is at optimum performance for   
   your transmitter output circuit.   
      
   Antenna Party   
   A long-standing tradition among hams where several gather to assist a   
   fellow ham in mounting antennas and/or towers. Often accompanied by malt   
   consumables and lies AFTER the tower and the antennas are up and   
   working...well, the consumables anyway (thanks to WD5CTQ).   
      
   Antenna Tuner   
   Device used to match an antenna to the output impedance of a   
   transmitter.   
      
   AOS   
   "Acquisition of Signal" from a satellite; occurs when the satellite   
   becomes "visible" to the antenna as it comes up from the horizon.   
      
   APC   
   Automatic Power Control   
   Current limiting of power amplifier to prevent damage to finals   
   in high SWR conditions.   
      
   APRS   
   "Automatic Position Reporting System". An amateur radio digital mode,   
   developed by Bob Bruninga, WB4APR, to transmit position reports, weather   
   reports, and messages between users. Used in conjuction with a GPS and   
   a TNC.   
      
   ARES   
   Amateur Radio Emergency Service   
      
   ARRL   
   "American Radio Relay League"; A U.S.-based organization which exists to   
   support Amateur Radio. For more information, please visit   
   http://www.arrl.org on the Internet, or write them at 225 Main Street,   
   Newington, Connecticut 06111.   
      
   ASCII   
   American National Standard Code For Information Exchange. A seven unit   
   digital code for the transmission of teleprinter data.   
      
   ATT   
   Attenuator. A network designed to reduce the amplitude of a signal.   
      
   ATV   
   "Amateur Television"; typically found on the 430 MHz and 1.2 GHz bands;   
   see http://www.hampubs.com/atv.htm for more information (thanks to KG4LXA   
   for the suggested link). Includes Fast Scan and Slow Scan modes.   
      
   Autopatch   
   Used in repeater operation for telephone interconnect.   
      
   Automatic control   
   The use of devices and procedures for control of a station when it is   
   transmitting so that compliance with the FCC Rules is achieved without   
   the control operator being present at a control point.    
       
   Auxiliary station   
   An amateur station, other than in a message forwarding system, that is   
   transmitting communications point-to-point within a system of cooperating   
   amateur stations.   
      
   Average power   
   Power measured on a standard power meter.   
      
   AWG   
   "American Wire Gauge"; a system of describing the diameter of wire by which   
   the wire size increases as the gauge number decreases.   
   --- SBBSecho 3.20-Win32   
    * Origin: The Thunderbolt BBS - Little Rock, Arkansas (1:2320/33)   
   SEEN-BY: 1/120 123 15/0 18/0 50/109 90/1 105/81 106/201 116/17 18   
   SEEN-BY: 116/116 123/0 10 25 131 170 180 200 525 755 3001 135/115   
   SEEN-BY: 135/300 153/7715 154/10 30 40 50 700 218/700 840 220/70 90   
   SEEN-BY: 221/6 222/2 226/17 18 30 227/114 229/110 112 113 206 307   
   SEEN-BY: 229/317 426 428 470 664 700 240/1120 1200 250/1 266/512 267/800   
   SEEN-BY: 275/1000 282/1038 291/111 299/6 301/1 113 317/3 320/219 322/757   
   SEEN-BY: 335/364 341/66 342/200 396/45 460/58 467/888 633/267 280   
   SEEN-BY: 633/281 412 418 712/620 848 1321 770/1 100 340 772/210 220   
   SEEN-BY: 772/230 2320/0 33 105 304 401 3634/0 12 27 56 57 119 5001/100   
   SEEN-BY: 5005/49 5020/715 1042 4441 5030/49 5058/104 5061/133 5064/56   
   SEEN-BY: 5075/128 5083/1 444 5090/958   
   PATH: 2320/33 105 154/10 3634/12 5020/1042 301/1 221/6 218/840   
   PATH: 770/1 712/848 633/280 229/426