User's Manual
Radio Activity S.r.l. 39 / 44
Impedance
50 Ohm
Sensitivity Tracking
up to
-
159 dBm
Antenna gain
From 20 to 45 dB, depending on cable length, to obtain a total gain
between 12 dB and 26 dB (assumes a 3 dBic patch antenna).
A typical value of 25 dB is best in most cases.
Frequency band
GPS L1 1575.42 +/
-
10 MHz
Maximum Noise Figure
< 2.5 dB
including pre
-
selector
DC Voltage
5Vcc @ max 100mA superimposed into the SMA RF connector
Out of Band Rejection
-
60 dB @ +/
-
50 MHz off center frequency
Lightening Protection
90 V, 20 kA, 8/20
-
S
Suggested model
GPS
-
TMG
-
SP
-
40N from PCTEL Broadband Technology
Note: It is necessary only 1 antenna per site independently from the number of base stations. The pps signal
received from one base station can be shared to the other ones in the same cabinet via the 6-pins bus on the
back of KAIROS.
6.4 Frequency bands
Model
Frequency band
K
A
-
900
UHF
–
HH
=> 806
-
9
41
MHz
K
A
-
5
0
0
UHF
–
H
=> 45
0
-
527
MHz
K
A
-
450
UHF
–
M
=> 40
0
-
4
7
0 MHz
K
A
-
3
50
UHF
–
L
=>
3
5
0
-
4
1
0 MHz
K
A
-
160
VHF
–
H
=>
1
36
-
174 MHz
K
A
-
080
VHF
–
L
=>
6
6
-
88 MHz
KA
-
040*
VHF
–
LL => 30
-
40 MHz
* please, ask to Factory the availability