Trimble Outdoors THUNDERBOLT 64057-00-ENG - Manual (Page 29)

Trimble ThunderBolt E GPS Disciplined Clock User Guide 27
Hardware Integration 3
Bullet antenna specifications
To download full specifications of the Bullet antenna, as well as ordering information,
please go to the Trimble website.
Physical characteristics
Note – The Bullet III mounting thread is a 3/4" NPT thread, dimensions in accordance
with ANSI/ASME B1.20.1. It is compatible with tapered threads in accordance with
DIN EN 10226 (which is the same as ISO 7/1, DIN 2999, BSP 21, JIS B0203). It is not
compatible with straight threads in accordance with ISO 228/1.
Environmental specifications
Antenna cable
Trimble includes an RG-6 cable in the starter kit to connect the ThunderBolt E and the
Bullet antenna. This cable type is widely available.
Note – The ThunderBolt E and the Bullet antenna are compatible with either 50 Ω
or 75
Ω
cable. Compared to most 50
Ω
cable, 75
Ω
cable provides superior transmission for the 1.5
GHz GPS signal and a better quality cable for the price. Mismatched impedance is not a
problem.
Note – RG-6 cable is lower loss than RG-59 and can be used when trying to maximize a
cable run without the use of in-line amplifiers.
The Bullet antenna has greater than 28 dB gain and “best case” noise figure of 3 dB. The
ThunderBolt E has less than an 8 dB noise figure. The system can therefore “tolerate”
18 dB of cable loss for less than 1 dB degradation in performance.
Dimensions 77.5 mm diameter x 66.2 mm height (3.05" x 2.61")
Bullet enclosure Textured, off-white plastic
Antenna weight 170 grams (6 oz)
Connector F-type or TNC
Mount 1"-14 thread or 3/4" pipe thread
Operating temperature -40 °C to +85 °C (-40 °F to 185 °F)
Storage temperature -40 °C to +100 °C (-40 °F to 212 °F)
Vibration 0.04g 2 /Hz 10 Hz to 500 Hz
0.03g
2
/Hz 500 Hz to 850 Hz
0.02g 2 /Hz 850 Hz to 1200 Hz
Shock 50 g vertical, 30 g all axes
Humidity Mil-STD-810E
Salt Fog Mil. Std. 202F, Method 101D Condition B
Waterproof Submersion to 1 meter