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IntroductionIntroduction
Welcome ...
Welcome to a new era of aviation communication. Once again, Garmin AT, Inc. has set new standards in
features and ease of use for the general aviation public. The SL40 is a VHF Communications Transceiver for
use by the aviation pilot. Packaged in a new slim form factor that helps you get the most out of limited panel
real estate without limiting features and performance. The SL40 is unequaled in providing the features, level of
performance, and reliability that aviation users expect. The slim line series of avionics sets a precedent that will
be the standard that all other avionics will be compared to. You can be confident in knowing that you are the
owner of the state-of-the-art in aviation communication. Our products are built to last and to allow for upgrad-
ing as your needs change in the future.
The SL40 is also packaged in configurations to meet the needs of customers for base station and mobile ap-
plications. Contact the Garmin Customer Support for more details.
History of Revisions
December 1996 Original Release
March 1997 Rev. -01
June 1998 Rev. -02
September 2003 Rev. -02 A
April 2004 Rev -02 B
May 2005 -02 Rev C
Ordering Information
To receive additional copies of the SL40 User’s Guide, order Garmin AT part #560-0954-02 Rev B (Garmin
P/N 190-00488-00 Rev A). The SL40 Installation Guide is Garmin AT part #560-0956-xx.