Sokkia SK-600 User Information

Electrical Specifications
3 dB pass band: L1: 1575 ± 8 MHz
L2: 1228 ± 10 MHz
f ± 30 MHz:
Out-of-band rejection:
c
f ± 50 MHz:
c
f ± 100 MHz:
c
θ = 90 ° :
Antenna elev. pattern:
(90 ° = zenith) 20 ° ≤ θ < 90 ° :
5 ° ≤ θ < 20 ° :
0 ° ≤ θ < 5 ° :
LNA gain: 26 ± 3 dB (L1) 26 ± 3 dB (L2)
Polarization: Right-hand circular
≤ 1.5 dB (typical)
Noise figure:
L1-L2 differential propagation
1.5 nsec (typical)
delay:
0 ° ≤ θ ≤ 90 ° :
Axial ratio:
(90 ° = zenith)
50 Ω
Nominal impedance:
≤ 2.0:1
VSWR:
≤ 50 mA @ +4 to +18 VDC, 40 mA (typical) @ 5 VDC
Power requirements:
≤ 1 W
Power handling:
Mechanical and Environmental Specifications
Finish: Weatherable polymer
≈ 730 g (25.75 oz)
Weight:
Altitude: 3000 m (9842.5 ft)
-55 ° C to +85 ° C (-67 ° F to +185 ° F)
Temperature:
Elevation Gain Patterns
90
120 60
5 −
−
10
−
15
150 − 30
20
−
25
−
30
−
35
−
RHP 40
180 0
210 330
240 300
270
Angle
Copyright Notice: © 2000 POINT, Inc. All rights reserved. No part of this publication or the equipment
described in it may be reproduced, translated, stored in a retrieval system, or transmitted in any form or by any
means, electronic, mechanical photocopying, recording, or otherwise, without prior written permission of
POINT, Inc. Your rights with regard to this publication and the equipment are subject to the restrictions and
limitations imposed by the copyright laws of the United States of America ("U.S.A.") and/or the jurisdiction in
which you are located.
Trademark Notice: Sokkia is a trademark of Sokkia Co. Ltd. All other product and brand names are trademarks
or registered trademarks of their respective holders.
750-0-0064 Rev 1 10/4/00 Printed on recycled paper. Recyclable
POINT, Inc. - Advanced Measurements Solutions from Sokkia and NovAtel
25 (min.)
30 (min.)
50 (min.)
7.5 dBic (L1 min.), 6.5 dBic (L2 min.)
-1.5 dBic (L1 min.), -1.5 dBic (L2 min.)
-5.5 dBic (L1 min.), -3.5 dBic (L2 min.)
-7.0 dBic (L1 min.), -5.0 dBic (L2 min.)
5 dB max. (L1), 3 dB max. (L2)
90
120 60
5 −
−
10
−
15
150 30
−
20
−
25
−
30
−
35
RHP
−
40
180 0
210
330
240 300
270
Angle
Sokkia L1/L2 GPSAntenna™
Model SK-600
- User Information -
Introduction
The performance of the model SK-600 can be summarized as follows:
• Very good sensitivity to signals over a wide range of elevations and
in all azimuth directions
• Excellent pattern roll-off near the horizon (eliminating multipath-
generated replicas of the original line-of-sight signal)
• Very good axial ratio (ensures a high quality signal is received)
• Common location and stable phase center for both L1 and L2
channels
• Enhanced immunity against electromagnetic interference
• Better radiation "hardening" from lightening or EMP
(electromagnetic pulse) effects
• High-speed transient voltage suppressor
• Operational temperature range from cold to hot extremes