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   LS_ARRL      Bulletins from the ARRL      3,036 messages   

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   Message 3,004 of 3,036   
   Daryl Stout to All   
   Ham Radio Glossary (I)   
   30 Jun 23 00:03:54   
   
   TZUTC: -0500   
   MSGID: 550.fidonet-ls_arrl@1:2320/33 29039a60   
   PID: Synchronet 3.20a-Win32 master/777fb6d8b Jun 13 2023 MSC 1929   
   TID: SBBSecho 3.20-Win32 master/777fb6d8b Jun 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.   
      
   Iambic   
   A method of Morse Code keying. Holding both paddles at same time sends   
   alternating dits and dahs (courtesy of VE3FFK).   
      
   IARP   
   International Amateur Radio Permit. A document issued pursuant to the   
   terms of the Inter-American Convention on an International Amateur Radio   
   Permit by a country signatory to that Convention, other than the United   
   States. Montrouis, Haiti.   
       
   IC   
   Integrated Circuit   
      
   IF   
   Intermediate Frequency   
   Internally converted frequency for amplification and other signal   
   processing.   
      
   IF shift   
   A function that electronically shifts IF frequency from a center   
   frequency.   
      
   IMD   
   Inter-Modulation Distortion. Distortion within RF circuits made with   
   upper and lower adjacent channel signals. Also see Intermod.   
      
   Indicator   
   Words, letters or numerals appended to and separated from the call sign   
   during the station identification.   
       
   Information bulletin   
   A message directed only to amateur operators consisting solely of subject   
   matter of direct interest to the amateur service.   
       
   Intermod   
   Derived from the expression "Intermodulation Distortion" (IMD). A problem   
   caused in the receiver of a radio by a nearby transmitter's spurious   
   signals which may fall on or very near to the receiver's receive frequency.   
   In some cases, a perfectly clean transmitter (i.e., no spurious signals)   
   can produce intermod if it overloads a receiver or if there is some other   
   point for 3rd order intercept. Intermod which is close, but not necessarily   
   right on, the receiver's frequency can cause the receiver to become less   
   sensitive (also known as "desense"). This is seen in some areas, where   
   there is a large proliferation of "pagers", as well as amateur radio   
   repeaters.   
      
   International Morse code   
   A dot-dash code as defined in ITU-T Recommendation F.1 (March, 1998),   
   Division B, I. Morse code.   
       
   IOTA   
   "Islands on the Air"; for more information, please see   
   http://www.islandchaser.com/.   
      
   IQ0   
   Slang for "IQ of zero"; an idiot (courtesy of GI4FUE).   
      
   IRC   
   "International Reply Coupon". A system by which most country's postal   
   systems provide a coupon which can be purchased, and then used by a   
   sender in any other country to obtain return mail postage.  This system   
   allows you to provide return postage for those in another country,   
   especially useful when you do not have access to that country's postage   
   stamps or currency. IRC's are frequently used to assure return postage   
   for a QSL card. For more information, please see QRZ's "QSL Corner" at   
   http://www.qrz.com/qsl.html.   
      
   ITU   
   International Telecommunication Union.   
   --- SBBSecho 3.20-Win32   
    * Origin: The Thunderbolt BBS - Little Rock, Arkansas (1:2320/33)   
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