Telemetry Systems
Telemetry is your insurance policy. When your bird decides to chase that crow over the ridge, telemetry is what gets you reunited.
Telemetry is the difference between recovering a lost bird and losing it forever. Raptors can travel miles in minutes, and dense forests, hills, and urban landscapes make visual tracking impossible. Every season, falconers who fly without telemetry lose birds that could have been recovered in hours with a basic transmitter. The investment in telemetry equipment is a fraction of the cost, time, and emotional toll of losing a trained hunting hawk that you have spent months conditioning and building a partnership with.
Essential, Not Optional
Many experienced falconers consider telemetry mandatory equipment. A lost bird without telemetry is likely a dead bird. The cost of telemetry is trivial compared to losing your hawk.
How Telemetry Works
Falconry telemetry uses radio signals to locate your bird:
- Transmitter: Attached to the bird, sends out radio pulses
- Receiver: Handheld unit that picks up the signal
- Antenna: Directional antenna helps you find the signal direction
- Tracking: You follow the signal strength to locate the bird
Types of Telemetry
Traditional VHF Telemetry
The classic system. Transmitter sends radio pulses; you use a directional antenna to find which way the signal is strongest, then follow it.
Pros
- • Proven reliable technology
- • Works anywhere (no cell coverage needed)
- • Long battery life in transmitters
- • Lower ongoing costs
Cons
- • Requires skill to use effectively
- • Terrain can block signals
- • Must actively track
- • Higher initial equipment cost
GPS Telemetry
Modern systems that combine GPS with cellular or radio communication. Shows the bird’s location on a map on your phone or device.
Pros
- • Exact location on a map
- • No tracking skill required
- • Track history/flight paths
- • Easy to use
Cons
- • Requires cell coverage (cell-based)
- • Heavier transmitters
- • Subscription fees (some systems)
- • Shorter battery life
Hybrid Systems
Some modern units combine GPS with traditional VHF—GPS for easy finding when it works, VHF backup when it doesn’t.
Transmitter Mounting
Transmitters can be attached several ways:
Tail Mount
Attached to central tail feather(s). Common and effective. Falls off with the feather during molt—you’ll need to remount.
Leg Mount
Attached to bewit on the leg. Stays through molt. Must be sized appropriately to avoid interference with flying or catching.
Backpack Mount
Harness system for larger birds. Distributes weight. More complex to fit properly but good for heavier GPS units.
Neck Mount
Collar-style for some species. Less common in North American falconry. Must be fitted carefully to avoid interference.
Using VHF Telemetry
VHF tracking is a skill that requires practice:
Basic Technique
- Turn on receiver: Set to your transmitter’s frequency
- Hold antenna: Point yagi antenna away from your body
- Rotate slowly: Find the direction of strongest signal
- Walk toward signal: Move in that direction
- Reduce gain: As signal gets stronger, turn down sensitivity
- Triangulate: Take readings from multiple points if needed
Pro Tips
- • Practice with transmitter hidden: Have someone hide it and you find it
- • Learn your terrain: Hills, valleys, and buildings affect signals
- • Check batteries: In both transmitter and receiver, before every flight
- • Know your frequency: Write it on your receiver
Practice tracking with a hidden transmitter before you ever need it for real. Walk different terrain types to learn how hills, trees, and buildings affect signal strength and direction. Always check transmitter batteries before every flight, not just at the start of the season. Keep your receiver in a protective case and label it with your frequency. Some falconers carry a spare transmitter already mounted on a spare tail-mount clip. Learn to track in both daylight and darkness, because overnight recoveries happen more often than anyone expects.
Budget Considerations
Typical Costs
Maintenance
- Battery replacement: Transmitters need new batteries periodically (some rechargeable)
- Antenna care: Check for bent elements, secure connections
- Receiver storage: Keep dry, remove batteries for long storage
- Test regularly: Check your system before the hunting season
Don’t Learn the Hard Way
Every experienced falconer has a telemetry story—usually involving a long night, difficult terrain, and a bird they almost didn’t find. Get telemetry, learn to use it, and never fly without it.
Recommendations for Beginners
- ✓ Start with a quality VHF system—learn the fundamentals
- ✓ Get a tail-mount transmitter (easiest to attach)
- ✓ Practice tracking before you need it for real
- ✓ Consider GPS as a supplement later, not a replacement
- ✓ Buy from established falconry suppliers (Marshall, Merlin, etc.)
Replace transmitter batteries according to the manufacturer's schedule, even if the unit still seems to work. Weak batteries produce weaker signals that reduce your effective tracking range exactly when you need it most. Clean antenna connections with electrical contact cleaner annually. Store receivers with batteries removed during the off-season to prevent corrosion. Inspect tail-mount clips for metal fatigue and replace them yearly. Keep a log of battery replacement dates and transmitter frequencies, and share this information with your sponsor and hunting partners.
learnEquipment.telemetry.expertTipsTitle
Always check your telemetry before you unhood or cast off your bird. Dead batteries and loose transmitter mounts are the leading causes of preventable bird losses in modern falconry. Carry spare batteries in your hawking bag and develop a pre-flight checklist that includes verifying transmitter signal strength. For VHF systems, practice directional tracking in an open field before you need the skill in a real search situation.
learnEquipment.telemetry.commonQuestionsTitle
The biggest decision in telemetry is whether to invest in GPS or stick with traditional VHF. VHF systems are less expensive, lighter, and have longer battery life, making them the standard choice for most falconers. GPS telemetry provides precise location data and is invaluable for longwing falconry where birds may range far from the falconer, but the heavier weight and shorter battery life make it less suitable for smaller species. Many experienced falconers use both systems simultaneously for maximum security.
learnEquipment.telemetry.historicalContextTitle
Falconry telemetry was developed in the 1960s and 1970s, originally adapted from wildlife research technology. Before electronic tracking, falconers relied entirely on bells, visual contact, and the trained recall of their birds to maintain the partnership. The introduction of VHF transmitters dramatically reduced the rate of lost birds and made it practical to fly raptors in terrain and conditions that would have been too risky without electronic backup.