Garmin SL-40

VHF Comm

Not Shippable
Garmin - Discontinued - 013-00106-01

1-year Manufacturer Limited Warranty



When panel space is at a premium, the compact SL40 comm and companion SL30 nav/comm transceiver fit a lot of capability in a surprisingly small package.

Save Space, Reduce Workload

The all-purpose, high-performance SL40 is packed with innovative features not found on competitive units. In its space-saving 1.3 x 6.25-inch design, SL40 incorporates pilot-friendly features such as active and standby flip-flop frequency tuning, direct sunlight-readable alphanumeric display, easy access to National Weather Service broadcasts, a two-place intercom and more.

With 8 watts of transmit power and only 35-watt DC input, the SL40 is cool and efficient. No external fans or cooling equipment are required. It also operates on 10 to 32-volt inputs without the need or expense of a separate voltage converter.

Never Miss a Transmission

The SL40's frequency-monitoring function gives you the ability to monitor ATIS or the 121.5 emergency frequency without leaving your assigned ATC channel. This allows you to listen to standby frequencies while giving priority to the active channel, meaning you'll never miss a transmission.

SL40: Think slim.

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  • 760 communication channels
  • Frequency range: 118 to 136.975 MHz
  • Active and standby flip-flop frequencies
  • Volume control
  • 16-character high-intensity alphanumeric LED display
  • Transmit status indicator
  • Backlit keypad controls
  • Automatic display intensity control
  • Built-in, two-place voice activated intercom
  • 2x8 frequency memory and recall
  • Stores/recalls 8 user-defined frequencies
  • Stores/recalls previous 8 frequencies
  • Frequency monitor function (listens to standby while monitoring the active)
  • Dedicated emergency channel selector
  • Squelch test function
  • Stuck mic time-out
  • Size: 1.3"H x 6.25"W x 10.5"D
  • Weight: 2 lbs.
  • SL40 comm
  • Installation kit
  • Manual

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SL-40 Product Commentary

Sarasota Avionics The SL40 is a 760-channel Com radio with a digital display and flip flop frequency selection. The SL40, like the SL30, has also received praise from our pilots who have installed this in their aircraft for its ease of use, reliability, and slim panel design making it easy to find space for in the most crowded of panels. One interface feature we find helpful is the ability for the SL40 to accept input from a Garmin handheld. For instance, pilots can go to their Garmin handheld GPS, go to the frequency page and select a frequency, if installed and interfaced with a Garmin power/data cable, the frequency will then appear in the standby of the SL40 which takes away the time needed to channel frequencies and puts pilots eyes back on the horizon. Another interesting pilot-friendly feature of SL40 is the ability to monitor the standby frequency, while the active frequency takes priority should a transmission come through. This makes this an idea installation for single radio cockpits. With all of these things taken into account, the SL40 has proven to be a solid performer.