Garmin DC 40
 
 
Overview 
Specifications
Documents
Firmware Updates
Press Release
 
 
 
Overview
 
This rugged, all-weather collar combines a high-sensitivity GPS receiver and VHF antenna into an all-in-one transmitter that works with the Astro 320 and Astro 220 to safeguard against your dog getting lost. Astro DC 40 sports a durable 1" orange polyurethane collar that fits most e-collar receivers - eliminating the need to put two separate collars on a dog. Plus, Collar Lock uses a 4-digit PIN number that helps prevent others from seeing your dog’s whereabouts.
Attach Collar and Go

When teamed up with the Astro 320 and 220, this system will have you hunting in no time. The DC 40, in combination with the Astro 320 and 220 pinpoints your dog’s position every 5 seconds. An innovative charging connection with a flashing LED-charging indicator lets you know when the battery is ready to go. You can extend the battery life of the DC 40 by changing the position transmit rate from 5 to 10, 30, or 120 seconds, enabling the DC 40 to work from 17-48 hours in the field on one charge. You will know if your dog is pointing, sitting, moving or treeing. Where your dog is. Where it’s been. How fast it’s moving and how far it’s gone.
 
Specifications
 
Unit Dimensions 3.25" x 1.75" x 1.5" (3.5 x 2.97 x 8.4 cm)
Collar Length 12" (30.5 cm) to 20" (50.8 cm) adjustable collar
Weight 5.1 oz (144.5 g) for transmitter and antenna, 8.0 oz (227.5 g) total weight
Battery Type Li-Ion rechargeable
Battery Life 17, 24, 36 or 48 hours (user adjustable transmit rate of 5, 10, 30 or 120 seconds)
Waterproof IPX7
High Sensitivity Receiver Yes
GNSS GPS
Range 5 miles
Frequency Mode MURS
 
Documents
 
Garmin Astro 220 DC 40 Owners Manual
Garmin Astro 220 DC 40 Quick Start Guide
Garmin Astro 320 DC 40 Owners Manual
Garmin Astro 320 DC 40 Quick Start Guide
Garmin DC 40 Battery Replacement Instructions
Garmin Dog Collar Compatibility
Garmin Dog Collar Video Archive
 
Firmware Updates (1400)
 
Changes made from version 4.00 to 4.10:
    Prevent potential range issue with the radio.
Changes made from version 3.90 to 4.00:
    Changes to support manufacturing.
Changes made from version 3.80 to 3.90:
    Changes to support manufacturing.
Changes made from version 3.70 to 3.80:
    Changes to support manufacturing.
Changes made from version 3.60 to 3.70:
    DC40 occasionally failed to fully power down when disconnected from a charger. This release fixes the problem.
Changes made from version 3.50 to 3.60:
    Communication settings retained during software upgrade.
Changes made from version 3.40 to 3.50:
    Improved GPS performance.
    Added triple blink to indicate a high quality GPS fix.
Changes made from version 3.00 to 3.40:
    Added support for DC40.
    Increased battery life.
Changes made from version 2.90 to 3.00:
    Force LED on when power button is pressed to provide instant feedback that the button is pressed.
Changes made from version 2.80 to 2.90:
    Changes for factory testing.
Changes made from version 2.70 to 2.80:
    Changes for factory testing.
Changes made from version 2.60 to 2.70:
    Changes for factory testing.
Changes made from version 2.50 to 2.60:
    Further improved battery monitoring.
Changes made from version 2.40 to 2.50:
    Improved low battery monitoring.
Changes made from version 2.30 to 2.40:
    Modified to never show 'sitting' status when dog type is set to 'pointing dog'.
Changes made from version 2.20 to 2.30:
    Eliminates the recording of an invalid detailed track point when power is turned off.