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30 Years of Proven Precision Trusted by global experts, our telemetry is engineered for the most demanding environments and absolute recovery confidence.

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Tutorial Videos

When you are not actively needing your equipment is a great time to have us check, clean, and test your equipment.

Tutorial

DIY video for a Bewit with Marshall EZ Twist

Tutorial

New method for TrackPack Install

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TrackPack on a Pigeon

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Omni and Yagi connections

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How to Install a TrackPack

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Replacing the Dog Collar Antenna

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Stories From The Field

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Recommended field guides and reference books, handpicked by our team to help you get the most from your gear.

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Pulses Become Sound.

Sound becomes direction

A beeping tone from the speaker. A needle showing signal strength. No screen to squint at — you read it like an instrument, because it is one.

Sweep 360 Degrees

Louder beeps mean signal is ahead.

Louder means on target.

Signal

14%

Marshall GPS · Turbo RF + GPS Telemetry

Range in the real world

Every GPS transmitter sends two signals: a live GPS track to the PocketLink, and a traditional UHF RF beep to your Field Marshall receiver. How far each reaches comes down to terrain — and your bird's altitude.

You + Field MarshallYou + PocketLinkBird

Open terrain high

With nothing between you and the bird, UHF travels essentially line-of-sight. This is where the quoted maximums are achieved — up to 200 miles of beeping RF and 100 miles of Turbo GPS data.

Open terrain low

As the bird drops toward the ground, both links shorten: the GPS data path weakens first as the horizon closes in, while the RF beep keeps giving you a bearing.

Forested / cover

Foliage and wet canopy absorb UHF energy, so expect ranges toward the lower end of the window. The traditional beep stays readable long after the data link drops — that's why both are on board.

Hilly / ridge

UHF is line-of-sight: a ridge between you and the bird can block the signal entirely. Move to high ground, or wait — the moment your bird climbs above the terrain, the beep returns first.

Turbo RF tracking

Active

200mi**miof 5–200 mi**

Field Marshall UHF Direction Finding Receiver

Live GPS data

Active

100mi*miof 2–100 mi*

Position + altitude in the AeroVision app

* Distances quoted using the optional High Gain Omni antenna; varies with terrain, the bird's height above ground, and obstacles.

** When tracking the traditional "beeping" telemetry signal with the Field Marshall UHF Direction Finding Receiver.

Equipment Off - season Maintenance & Storage Guide

Remove any dirt, debris, or buildup accumulated from the previous hawking season before packing your gear away.

Store all equipment in a cool, dry area where it remains safe from dust, dirt, and grime accumulation.

Take out batteries before storage, lightly clean the contacts using rubbing alcohol on a cotton swab, and wipe down the exterior with a damp cloth.

Inspect antennas carefully and replace any unit that is kinked, damaged, or exposing internal metal filaments.

Store batteries in a cool, dry place—using vapor-proof containers in humid areas—and isolate them so they cannot touch, short-circuit, or overheat.

Charge all rechargeable batteries to 100% prior to long-term offseason storage in addition to keeping them in a cool, dry location.

Ship your equipment within 3–4 weeks of purchasing service; unreceived items without an update will be automatically refunded by week 4, requiring re-payment if sent later.

Learning Center

How it works

Tutorial Videos