Novatel GPS-702L User Manual
User guide, Gps-702l
The GPS-702L is an active antenna
designed to operate at the GPS L1 and L2
frequencies, 1575.42 and 1227.60 MHz
and across the L-Band from 1525 to 1560
MHz. It also has excellent reception of low
elevation angle satellites (for example,
CDGPS, OmniSTAR, GPS, SBAS). The 702L can be distin-
guished from other GPS-700 models by its grey rim. This guide
provides the basic information you need to install and begin
using your new antenna.
ADDITIONAL EQUIPMENT REQUIRED
The equipment listed below is required to set up the GPS-702L:
A mount, such as a range pole, tribrach, or tripod, with a
5/8" x 11 thread that extends between 3/8" and 7/8" (9
mm and 22 mm)
A 1" open-end wrench
Coaxial cable with a male TNC connector
A device with an antenna input port that both receives
the RF signal and provides 4.5 - 18.0 VDC to the
antenna (All NovAtel GPS receivers provide the neces-
sary power through their antenna RF connectors.)
SITE SELECTION GUIDELINES
Before installing the antenna, select a site that as closely as
possible meets the following conditions for optimal performance:
An unobstructed line-of-sight from horizon to horizon
and at all bearings and elevation angles
As far as possible from RF reflective objects, especially
those that are above the antenna and any water bodies,
which can be a strong source of multipath reflections
If obstructions and RF reflective surfaces are within 30
m, ensure the site is as high as possible. Otherwise,
mount the antenna as low to the ground as possible.
INSTALLING THE ANTENNA
After a site has been selected, install the antenna as follows:
Verify that the thread on the mount does not extend more
than 7/8" (22 mm) to ensure the plastic inside the antenna
receptacle is not damaged when the mount is inserted. If it
extends further, add jam nuts or washers to shorten the
exposed thread, ensuring any nuts are well-tightened.
Align the mount thread with the metal adapter on the bottom
of the antenna and rotate the antenna clockwise until it is
securely screwed to the mount. Using a wrench, tighten the
adapter to the mount.
The metal adapter on the bottom of the antenna is fixed in place.
Do not attempt to remove it.
Remove the dust cap from the antenna’s TNC connector.
Attach the male TNC connector of the coaxial cable to the
antenna’s TNC connector.
Attach the other end of the coaxial cable to the antenna input
port of the receiving device, which must provide power as
detailed in the SPECIFICATIONS section of this guide. All
NovAtel GPS receivers provide the necessary power
through their antenna RF connectors.
The GPS-702L is designed to withstand the elements, including
rain, snow, and dust. However, to ensure your antenna performs
optimally, keep the radome (the top surface of the antenna)
clean and brush off any ice and snow. In addition, ensure the
TNC connector remains clean and dry and replace the dust cap
when a cable is not connected.
ELEVATION GAIN PATTERN
5/8 x 11
3/8 - 7/8
9 - 22 mm
3 dB pass band (typical)
± 20 MHz
± 20 MHz
± 20 MHz
Scale: 5 dB/ring
LNA gain (typical)
Out-of-band rejection (typical)
Antenna elevation pattern
Peak gain (
Pattern roll-off (
5.0 dBic (L1/LB); 1.5 dBic (L2) (min.)
13.0 dB (L1/LB); 12.0 dB (L2) (typical)
Noise figure (typical)
2.5 dB (typical)
L1-L2 diff. propagation delay
15 ns (maximum)
≤ 2.0 : 1
+4.5 to +18.0 VDC
33 mA (typical)
185 mm (7.28
500 g (17.6 oz)
9000 m (29527.5 ft)
-40°C to +85°C (-40°F to +185°F)
-55°C to +85°C (-67°F to +185°F)
Random Vibe: MIL-STD-810F,
Method 514.5, 7.706, 1 hour per axis
Sinusoidal Vibe: ASAE 5.15.2, Level1
Shock and bump
IEC 68-2-27, Ea (shock) 40G
IEC 68-2-29, Eb (bump) 40G, 6 ms,
4000 pulses per axis
IEC 60529 IPX7
- 1. Verify that the thread on the mount does not extend more than 7/8" (22 mm) to ensure the plastic inside the antenna receptacl...
- 2. Align the mount thread with the metal adapter on the bottom of the antenna and rotate the antenna clockwise until it is securely screwed to the mount. Using a wrench, tighten the adapter to the mount.
- The metal adapter on the bottom of the antenna is fixed in place. Do not attempt to remove it.
- Only integer hardware revisions affect the phase center offsets. For example, the numbers given for hardware revision 2.02 are applicable to an antenna labelled H/W Rev: 2.00, 2.04, 2.12 and so on.
- Before shipping any material to NovAtel or Dealer, please obtain a Return Material Authorization (RMA) number from the point of purchase. You may also visit our website at http://www.novatel.com and select Support | Repair Request from the menu.
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