Trimble Bullet III GPS Antenna

5.0V or 3.3V, TNC or F- Type Connectors, Resists RF Jamming

Manufacturer: Trimble
Trimble Bullet III GPS Antenna

Trimble's Bullet™ GPS Antenna provides a perfect solution for manufacturers who need a fixed-sight, rooftop GPS antenna. It is housed in leak tested packaging designed to withstand continuous exposure to shock, excessive vibration, extreme temperatures, water and sunlight. For added reliability, the antenna cable can be threaded through a pole mount to keep it safe from environmental damage.

The Bullet GPS Antenna includes advanced filtering technology for reliable performance in hostile RF jamming environments. This antenna is also a high-quality solution for adding GPS data to marine navigation systems.


The antenna is housed in completely waterproof packaging designed to withstand exposure to shock, excessive vibration, extreme temperatures, rain, snow and sunlight. The enclosure is a textured off-white colour and is both weatherproof and waterproof. The dome is all plastic, and the threaded socket in the base of the antenna is corrosion resistant. The threaded socket accepts either a 1"-14" straight thread (typical marine antenna mount) or a 3/4" pipe thread. The F-type or TNC antenna connector is located inside the threaded socket, which allows the antenna cable to be routed inside the pole and protects the cable connection for added reliability.


The Bullet III antenna is an active GPS antenna with 35-dB preamp and dual bandpass filters. The high-gain preamp allows the Bullet III to be used with up to 75 feet of RG-59 cable. The bandpass filters improve immunity to other RF signals for reliable performance in hostile RF jamming environments.


For over 15 years, Trimble has been producing GPS antennas renowned for its survivability in tough environments. The Bullet III is the fourth generation of the proven Bullet antenna family (more than 40,000 delivered) and offers all the reliability and performance benefits that this exceptional field experience provides. The Bullet III is a direct replacement (mechanically and electrically) to the Bullet II.

In unforgiving environments, an antenna failure could be disastrous. Don't risk it. Select a proven, stress-tested, GPS antenna—the Trimble Bullet III GPS antenna.


Trimble recommends the use of an RG59, 75-ohm cable as a low cost and readily available coaxial cable for the Bullet III antenna. Extensive testing by Trimble has shown a minimal attenuation factor of less than 0.5dB (1/2dB) loss using the 75 Ohm cable with a 50 Ohm connector and antenna. The GPS frequency of 1575.42 MHz has negligible attenuation effects between the differences of equipment impedance.

Trimble recommends that the utmost consideration be given to the coaxial cable distance from the Bullet III antenna to the GPS module, including the GPS input receive level, using either 50 or 75-ohm coaxial cable. Using Trimble embedded products, allow for a minimum of 18 dB of gain at the R/F connector input of the GPS and 20 dB of gain at the R/F connector for the ThunderBolt Disciplined Clock. While the Bullet III antenna will effectively perform for other vendor-supplied GPS products, the correct input sensitivity level is required for optimum functionality.


The Bullet III has a 1”-14 thread and comes with either a TNC or F-TYPE connector.


Connector5.0V versions: Available with either F-type & TNC connectors
3.3V versions: Available with TNC connector only
CableNo cable
Mounting1”-14 thread or 3/4” pipe thread (NPT - American Standard Pipe Taper Thread)
FrequencyGPS L1, 1575.42 +/- 1.023 MHz
Gain5.0V: 35 +/- 3dB minimum ( 25°C)
3.3V: 30 +/- 3dB minimum ( 25°C)
Noise3.3 dB maximum (25 °C ±5 °C)
Impedance50 Ohms
PolarizationRight-hand circular polarization (RHCP)
VSWR2.0 Max
Anti JammingBlocking 1 dB compression point:
• 100 MHz TO 1.500 GHz >+15dBm
• 1.5 GHz TO 1.57542 linear decrease from +15 dBm to -40 dBm over the frequency range
• 1.57542 GHz TO 1.65 GHz linear increase from -40dBm to +15 dBm over the frequency range
• 1.65 GHz TO 3 GHZ >+15 dBm
OtherImmersion to 1 meter
IPx7 30min @ 1m
Humidity Soak: 60°C @ 95% RH, 96 hours
Corrosion Salt Resistant: 5% Salt spray tested, 96 hours
Azimuth coverage: 360° (omnidirectional)
Elevation coverage: 0°-90° elevation (hemispherical)


Electrical5.0V Version: 5.0V DC (±10%), 30 mA maximum
3.3V Version: 3.3V DC (±10%), 20 mA maximum
Mechanical3.05” D x 2.61” H
77.5 mm x 66.2mm
TemperatureTemperature range (operation): -40 to +85° C
Temperature range (storage): -40 to +100° C
Humidity20% to 95%
Weight6.0 oz/170 grams
Vibration10 to 200Hz. Log sweep 3.0G (sweep time: 15 min). 3 axis
Shock50G vertical axis, 30G all axis
MTBF308,612 hours / 35 years
Warranty1 Year



Board57860-30 Bullet III 5.0V GPS ANTENNA F-style (replaces 41556-00 & 57860-10)
57860-20 Bullet III 5.0V GPS ANTENNA TNC-style (replaces 41555-00 & 57860-00)

57861-20 Bullet III 3.3V GPS ANTENNA TNC-style (replaces 48360-00 & 57861-00)
AccessoriesD2478-3001 TNC to TNC, 1 metre using RG-58C/U cable
D2478-3008 TNC to TNC, 8 metre using RG-58C/U cable
D2478-3025 TNC to TNC, 25 metre using RG-58C/U cable

D2606-3008 TNC to N-TYPE, 8 metre using RG-58C/U cable
D2606-3025 TNC to N-TYPE, 25 metre using RG-58C/U cable

D2607-3008 TNC to BNC, 8 metre using RG-58C/U cable
D2607-3025 TNC to BNC, 25 metre using RG-58C/U cable

D2446-3000 F-Type to F-Type, 25 metres

Refer to the Bullet cable page for further information. Other cable lengths/connector combinations available on request - call for details

6535S Universal mount stainless steel, thread 1" x 14, height 4"
6538S Universal mount stainless steel, thread 1" x 14, height 1.62"
6538N Universal mount nylon, thread 1" x 14, height 1.62"
V9171 Pipe mounting bracket in stainless steel, thread 1”x14.
V9174 Universal mount stainless steel, thread 1" x 14, height 4"
V9175 Universal mount reinforced nylon, thread 1" x 14, height 4"
DPV9176 Universal mount stainless steel, thread 1" x 14, height 155mm
Trimble Bullet III GPS Antenna - order online
Recab UK
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