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.

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.

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

One of our more popular units for the past 30 years, the MN-10 is familiar, easy to use, and reliable. Covering 100KHz within a given frequency, users have the capability of tracking up to 10 transmitters on one unit. Each channel consists of 10KHz of coverage to allow for a fine tune for clear and precise tracking abilities.

Optional: Add the Dual Function Meter (DFM) to get a lighted meter with a battery tester.

MNS-4000 400-Channel Tracking Receiver

The L.L. Electronics MNS-4000 is our wide-range handheld tracking receiver for users who want extensive frequency coverage without unnecessary complexity. Each receiver provides 400 channels across a 4 MHz frequency span, giving you the flexibility to track a large number of transmitter frequencies while retaining the straightforward controls and dependable operation our receivers are known for.

Each channel covers 10 kHz, with the Tune control allowing you to precisely zero in on the transmitter frequency within that channel.

216–220 MHz is by far our most common configuration, but the MNS-4000 can be built for other supported radio-tracking frequency ranges as well.

Built for Tracking, Not Complexity

The MNS-4000 is intentionally straightforward. Select the appropriate channel, fine-tune the signal, and use the Gain control to manage both signal strength and audio level.

Rather than requiring separate attenuation controls or complicated menus, the Gain control allows you to progressively reduce sensitivity as you close in on the transmitter. This makes it easy to transition from searching at long range to accurately determining direction at close range.

400 Channels. 4 MHz of Coverage.

The MNS-4000 provides:

• 400 selectable channels

• 10 kHz per channel

• 4,000 kHz / 4 MHz total coverage

• Fine tuning within each channel

• Coverage approximately 216.000–219.999 MHz

For example, a transmitter operating at 216.175 MHz is located on Channel 617, with the Tune control set near 5. Fine tuning allows for the small amount of frequency variation that can occur between individual transmitters or with changing environmental conditions.

Choose Your Frequency Range

Every MNS-4000 is configured for the frequency range you need.

216–220 MHz is the most common radio-tracking range we supply, but configurations are also available for other commonly used tracking bands from approximately 148 MHz through 438 MHz.

Because each MNS-4000 covers a 4 MHz span, customers using less common frequencies should provide the frequencies of the transmitters they need to track. We can confirm compatibility and configure the appropriate receiver range before building the unit.

Dual-Function Signal Meter

The analog meter is much more than a simple signal indicator.

At closer range, meter movement provides an extremely useful visual indication of signal strength and direction. At longer distances, the receiver's audio can often provide the clearest indication of small changes in signal as the antenna is swept from side to side.

The MNS-4000 includes our Dual Function Meter as standard equipment:

Meter Light
Turns on the green meter backlight for easier visibility in low-light conditions.

Battery Test
Momentarily displays receiver battery condition directly on the meter.

2L Folding Directional Antenna

The current MNS-4000 package is paired with our 2L Folding Directional Antenna.

This compact two-element design was developed specifically around our receivers. It provides the directional response needed for tracking while eliminating the bulk of older multi-element antenna designs. The antenna folds alongside the receiver for transport and opens quickly when needed.

It is lightweight, comfortable to use in one hand, and mounts directly with the receiver to create one integrated tracking unit.

Tracking by Meter and Audio

The receiver gives you two complementary ways to determine direction.

At closer range: reduce the Gain and watch the meter. Meter movement makes small changes in signal strength easier to distinguish when the transmitter is nearby.

At longer range: increase the Gain and listen to the signal while slowly sweeping the antenna. A relatively small change in antenna direction can produce a noticeable drop in audio, helping identify the strongest direction.

The orientation of the transmitter antenna also matters. If a weak signal is difficult to locate, try holding the receiver antenna both vertically and horizontally. Matching the polarization of the transmitter antenna can significantly improve reception, particularly at greater distances.

Straightforward Controls

Channel Selector
Selects one of 400 receiver channels.

Tune
Fine-tunes the receiver within the selected 10 kHz channel.

Gain
Controls receiver sensitivity, attenuation, and audio level as you approach or move away from the signal.

Signal Meter
Provides visual signal-strength indication for directional tracking.

Meter Light / Battery Test
Provides a green meter backlight and momentary battery-condition check.

Headphone Jack
Standard headphone connection for private listening or difficult field conditions.

Your MNS-4000 setup includes:

• MNS-4000 Receiver

• 2L Folding Directional Antenna

• Receiver-to-antenna cable

• Two receiver batteries

• Operating instructions

*** Receiver Lead Time: Due to strong demand, we are currently experiencing extended lead times on receiver orders. We build and test each receiver before shipment and appreciate your patience. ***