Garmin Extended-Range VHF Antenna, For Astro 320, Up to 9 mi Range, 13 in

Overview

The Garmin 010-10856-30 is an extended-range VHF antenna that measures 13 inches and replaces the standard antenna on an Astro 320 handheld. When conditions cooperate, it can add up to 9 miles of tracking range with compatible Garmin handhelds and collars.

This is the handheld tracking antenna, not a fixed-mount antenna for a marine VHF radio or AIS, and it does not tie into NMEA 2000 or your boat’s GPS system.

On the water, the extra length helps when the handheld is down at waist level in a cockpit or skiff. Keeping the antenna upright and out from under metal rails, hardtops, and T-top frames makes the biggest difference.

Key features

• Extended-range VHF tracking antenna for Garmin handheld dog tracking and training units
• 13-inch flexible whip style
• Adds up to 9 miles of tracking range in favorable conditions
• Made to replace the handheld’s standard antenna without any wiring or power requirements
• Compatible with Astro 320 and commonly used across compatible Alpha, Astro, and PRO handheld models

Compatibility and fit

Use this antenna on handheld dog tracking and training devices that accept the extended-range VHF antenna style. It is commonly paired with Astro handhelds such as the Astro 320 and Astro 220, and it is also used on compatible Garmin Alpha and PRO handheld units.

If you are shopping for a boat radio antenna, AIS antenna, or a GPS antenna for a chartplotter, this is not the right part. This antenna is meant for the VHF tracking link between the handheld and the collar.

Installation and setup

Swap it in place of the antenna already on your handheld, then snug it by hand. Avoid overtightening and avoid using tools that can damage the antenna base or the handheld’s antenna port.

For best real-world range, keep the antenna as vertical as you can and try not to block it with your body. On a boat, step clear of hardtop supports and rails when you need maximum reach.

Use cases on board

This antenna is a good match for hunters and guides running dogs around marsh edges, barrier islands, and back bays where the handheld may be used from a skiff, duck boat, or shoreline. It also makes sense for anyone who regularly tracks in cover and wants a longer antenna that stays flexible when the handheld is stowed or carried.

Maintenance and care

After exposure to salt spray, wipe the antenna down with fresh water and dry it before stowing. Check the base and connection point occasionally for grit or corrosion, and keep the handheld’s antenna port clean so the connection stays consistent.

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