Falconry & Wildlife Tracking Transmitters Built for Real-World Recovery
Since 1974, L.L. Electronics transmitters have been trusted by falconers, dog handlers, wildlife researchers, and recovery specialists worldwide. Whether you need maximum output power, extended battery life, or ultra-lightweight performance, our LF Series transmitters are engineered for dependable field use.
Choose the Right Transmitter
Compare output power, battery life, and ideal use to find the right fit for your tracking needs.
Standard LF Series
Model
Output Power
Battery Life
Best For
Notes
Low
Medium
High
Very High
High to Very High
Low to Moderate
Low to High
Longest
Balanced
Shorter
Moderate
Varies
Optimized
Extended
Long Duration Tracking
General Purpose
Increased Signal Strength
Higher Durability
Longevity
Extended runtime
Versatility
Stronger Field Recovery
Maximum Output
Smaller Applications
Larger Battery and Higher Output
Specialized Series
Model
Output Power
Battery Life
Best For
Notes
Durability and Range
Ultra-lightweight
Reinforced Build
Still unsure which transmitter is right? Contact us for guidance.
Standard LF Series
Compact, lightweight falconry transmitter built for dependable recovery.
The LF-1 2G is the smallest transmitter in our standard LF Series lineup. At approximately 4 grams, it provides dependable VHF tracking performance and long battery life in a compact package for applications where transmitter size and weight matter.
Weight: Approx. 4 grams
Battery: 1 × 392 (SR41W) high-drain silver oxide battery
Battery Life: Approx. 21 days / 500+ hours continuous operation
Rated Range: Up to 3 miles under favorable conditions
Best For: Falconers who want a compact, lightweight transmitter with long battery life
Actual tracking range varies with terrain, elevation, receiver, antenna orientation, and surrounding conditions.
The LF Series is our core transmitter line, balancing output power and battery life for a wide range of field applications.
Long battery life, compact size, and dependable VHF tracking performance.
The LF-2 2G is a versatile falconry transmitter designed for users who want a strong balance of size, battery life, and tracking performance. Powered by two 392 silver oxide batteries, it provides approximately 14 days of continuous operation in the same compact housing used by the higher-output LF-3.
Weight: Approx. 4.6 grams
Battery: 2 × 392 (SR41W) silver oxide batteries
Battery Life: Approx. 14 days / 330+ hours continuous operation
Rated Range: Up to 7 miles under favorable conditions
Best For: General falconry use where long battery life and compact size are priorities
Actual tracking range varies with terrain, elevation, receiver, antenna orientation, and surrounding conditions.
Higher-output falconry transmitter for greater signal strength and tracking range.
The LF-3 2G uses the same compact design as the LF-2, but operates at higher output for falconers who prioritize stronger signal performance and greater tracking range over maximum battery life.
Weight: Approx. 4.6 grams
Battery: 2 × 392 (SR41W) silver oxide batteries
Battery Life: Approx. 7 days / 160+ hours continuous operation
Rated Range: Up to 14 miles under favorable conditions
Best For: Falconers who prioritize transmitter output and tracking range
Actual tracking range varies with terrain, elevation, receiver, antenna orientation, and surrounding conditions.
High-output falconry transmitter with a compact loaded antenna and magnetic on/off control.
The LF-4 is designed for medium and larger hawks and falcons where strong signal output, practical battery life, and a shorter antenna are priorities. Its compact loaded antenna, lithium battery, and magnetic switching make it a durable and convenient choice for demanding field use.
Weight: Approx. 7.5 grams
Battery: 1 × 1/3N lithium (2L76)
Battery Life: Approx. 10 days normal operation + about 3 days low-battery mode
Rated Range: Up to 30+ miles under favorable conditions
Best For: Medium and larger hawks and falcons
Actual tracking range varies with terrain, elevation, receiver, antenna orientation, and surrounding conditions.
XLF Series Transmitters
More durable, higher output transmitters for demanding recovery operations.
Rugged, fully sealed falconry transmitter with a machined aluminum housing and replaceable antenna.
The XLF 3V is designed for falconers who want a durable, highly configurable transmitter with a strong balance of output and battery life. Its sealed aluminum housing protects the electronics during demanding field use, while replaceable screw-in antennas and optional magnetic switching allow the transmitter to be configured for your preferred setup.
Weight: Approx. 6 grams
Battery: 2 × 392 (SR41W) silver oxide batteries
Battery Life: Approx. 7 days / 168 hours continuous operation
Rated Range: Up to 20 miles under favorable conditions
Best For: Falconers wanting a rugged, configurable transmitter with balanced output and runtime
Actual tracking range varies with terrain, elevation, receiver, antenna orientation, and surrounding conditions.
Higher-output falconry transmitter built on the rugged, fully sealed XLF platform.
The XLF 4.5V is designed for falconers who want greater transmitter output and tracking range while retaining the durable machined aluminum construction and configurable design of the XLF Series.
Weight: Approx. 6 grams
Battery: 3 × 396 (SR726W) silver oxide batteries
Battery Life: Approx. 6 days / 144 hours continuous operation
Rated Range: Up to 25 miles under favorable conditions
Best For: Falconers wanting increased output and range in a rugged, configurable transmitter
Actual tracking range varies with terrain, elevation, receiver, antenna orientation, and surrounding conditions.
Maximum-output falconry transmitter built on the rugged XLF platform.
The XLF 6V is the highest-output transmitter in the XLF Series, designed for falconers who prioritize maximum signal strength and tracking range. Its fully sealed machined aluminum housing, replaceable antenna system, and configurable options provide the durability and flexibility of the XLF platform at its highest output level.
Weight: Approx. 7 grams
Battery: 4 × 392 (SR41W) silver oxide batteries
Battery Life: Approx. 5 days / 120 hours continuous operation
Rated Range: Up to 30 miles under favorable conditions
Best For: Falconers who prioritize maximum transmitter output and tracking range
Actual tracking range varies with terrain, elevation, receiver, antenna orientation, and surrounding conditions.
Miniature / Special Series
Ultra-light transmitters designed for small falcons and lightweight tracking setups.
The LF-1 2G Special is our smallest and lightest transmitter, designed for falconers who need the least possible size and weight for very small birds.
Weighing approximately 1.7 grams with battery, the LF-1 Special is an excellent choice for Kestrels, Merlins, and other similarly sized hawks where minimal weight is critical.
To reduce weight as much as possible, the LF-1 Special uses a permanently fixed antenna. If ordered with the Tail-Mount option, the tail mount is also fixed to the transmitter and adds only about 0.2 grams.
The transmitter is powered by one 361 (SR721W) high-drain silver oxide battery and provides approximately 10 days / 240 hours of continuous operation.
Specifications
Weight: Approximately 1.7 grams (with battery)
Battery: 1 × 361 (SR72W) silver oxide battery
Battery Life: Approximately 10 days / 240 hours continuous operation
Maximum Rated Range: Up to 3 miles under favorable conditions
Antenna: Permanently fixed to reduce weight
Mounting Options: Transmitter only, leather bewit, or fixed tail mount
Frequency: Select an available frequency or request a custom frequency
Best suited for: Kestrels, Merlins, and other very small hawks
Actual tracking range varies with terrain, elevation, receiver, antenna orientation, and surrounding conditions.
The LF-2 2G Special combines long battery life and dependable tracking performance in an exceptionally small, lightweight package.
Weighing approximately 2.2 grams, the LF-2 Special is designed for smaller raptors where transmitter size and weight matter, while still providing approximately 14 days of continuous operation and a rated tracking range of up to 7 miles under favorable conditions.
Like the other LF Special transmitters, the LF-2 Special uses a permanently fixed antenna to minimize weight. Its electronics are hand-potted for durability and protection against the vibration and impact encountered in the field.
If ordered with the Tail-Mount option, the mount is permanently fixed to the transmitter and adds approximately 0.2 grams.
Specifications
Weight: Approximately 2.2 grams
Battery: 2 × 361 (SR721W) silver oxide batteries
Battery Life: Approximately 14 days / 330 hours continuous operation
Maximum Rated Range: Up to 7 miles under favorable conditions
Antenna: Permanently fixed to minimize weight
Mounting Options: Transmitter only, leather bewit, or fixed tail mount
Frequency: Select an available frequency or request a custom frequency
The LF-3 2G Special delivers higher-output tracking performance in the same exceptionally small, lightweight package as the LF-2 Special.
Weighing approximately 2.2 grams, the LF-3 Special is designed for falconers who want greater signal strength and maximum tracking range while keeping transmitter size and weight to an absolute minimum.
The LF-3 Special uses the same compact physical design as the LF-2 Special, but operates at higher output power. The result is a rated tracking range of up to 14 miles under favorable conditions, with approximately 7 days of continuous battery life.
Like the rest of the LF Special Series, the transmitter uses a permanently fixed antenna to minimize weight. Its electronics are hand-potted for durability and protection against vibration and impact in the field.
If ordered with the Tail-Mount option, the mount is permanently fixed to the transmitter and adds approximately 0.2 grams.
Specifications
Weight: Approximately 2.2 grams
Battery: 2 × 361 (SR721W) silver oxide batteries
Battery Life: Approximately 7 days / 168 hours continuous operation
Maximum Rated Range: Up to 14 miles under favorable conditions
Antenna: Permanently fixed to minimize weight
Mounting Options: Transmitter only, leather bewit, or fixed tail mount
Frequency: Select an available frequency or request a custom frequency
Extended Battery Life
LF series transmitters with larger batteries for extended operating life without sacrificing power.
Hack transmitters are long-life, high-durability units that are ideal for use on a young bird that is being hacked. The long life helps to ensure that you have enough time to find your bird. These are also ideal backup transmitters.
Weight: 7 grams
Battery Life: 55 days (~1300 hours) continuous operation
Range: 7 miles
Hack transmitters are long-life, high-durability units that allow you enough time to find your young bird in training. Similar to the LF-2 Hack, this LF-3 Hack gives you a little more range and slightly less battery life.
Weight: 7 grams
Battery Life: 37 days (~880 hours) continuous operation
Range: 10 miles
Alternative Tracking
These units go a step beyond traditional tracking devices by adding sound and/or light.
The Beeper Bell from LL Electronics is the perfect entry level locating device for apprentices and also the perfect supplemental device for experienced falconers. Using sound to help locate a hidden hawk from over 500 feet (150 Meters) away regardless of motion, soft ground cover or downed prey that would cause a conventional bell to fall silent. The standard Beeper Bell will run on two 392 batteries for about 1 week. For a little extra volume, the Beeper bell will also run on three 396 batteries to attain 4.5 volts of power for about 5 days.
Magnetic wand and Batteries sold separately.
The Flash Beeper Bell from LL Electronics is the perfect entry level locating device for apprentices and also the perfect supplemental device for experienced falconers. Using sound to help locate a hidden hawk from over 500 feet (150 Meters) away regardless of motion, soft ground cover or downed prey that would cause a conventional bell to fall silent. When the hunt lasts longer than expected the Flash Beeper Bell is great for assisting in finding a hawk in low light or no light situations. The Flash Beeper Bell with last for about 3 days on two 392 batteries. If you want a little more brightness or volume the bell will run on three 396 batteries to attain 4.5 volts for about 2 days.
Magnetic wand and Batteries sold separately.
The LF-4 transmitter is one of our most popular options for its high output power. The LF4 LED adds LEDs in a translucent body that illuminates brightly every time the transmitter pulses, creating a highly visible beacon of light that can be spotted in low light conditions. This transmitter features low battery warning, magnetic on/off and a short 6.5 inch (16.5 cm) antenna without sacrificing performance.
Weight: 7.5 grams
Battery Life: 4 days (~100 hours) continuous operation
Range: 30+ miles