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Basic
Description
The GPS30
GPS Antenna Splitter was designed to allow one to four
GPS receivers to share one common GPS antenna.
The GPS30
can have either 0 dB or 10 dB of gain. The extra
gain allows longer antenna cables to be used. Each
port is isolated from each other by 20 dB.
The existing
active or passive antenna is connected to the antenna
port of the GPS30. This is the RF input port of
the splitter. One to four GPS receivers are connected to
the GPS30 RF output ports. Unused ports can be
left open circuit. No termination is necessary.
The GPS30 is
either powered by the GPS receivers or an external power
supply can be connected. Jumpers on the bottom of
the GPS30 select what GPS receiver powers the GPS30.
This same voltage (or 3VDC) is fed to the antenna to power the
active antenna, if desired. For passive antennas a
jumper is removed.
470 ohm load
resistors can be connected across each one of the four
GPS ports. This resistor simulates the load of an
active antenna preventing an antenna undercurrent alarm
being activated by the GPS receiver.
It is even
possible to mix the voltage types of GPS receivers, some
operating at 3V, some at 5V and some at 12V.
The GPS30 operates from 3 to 12
volts and only consumes 11 mA, well within the
capabilities of most GPS receivers.
The GPS30 is
fully configurable to suit individual systems. If
the GPS receiver doesn't send out a voltage, the GPS30
can be powered from an external DC power supply.
In this mode, no DC flows down to the GPS receivers.
Band Pass
Filter Included
The GPS30
operates on all the GPS frequencies of the USA
system, Glosnass (Russia) and the European Galileo
system.
The GPS30
includes a bandpass filter that only allows the GPS
frequencies through, but blocks out other signals.
Specifications
|
Specification Parameter |
Specification |
Comments |
|
Usable Frequency Range |
1200 to 1607 MHz |
|
|
Input and Output Impedance |
50 Ω nominal |
|
|
Gain |
0 dB ± 3 dB or 10 dB ± 2 dB |
+10 dB gain is option 04 |
|
Input and Output return loss |
> 10 dB typical |
|
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Stopband Rejection |
50 dB min from 100 to 700 MHz and > 2150 MHz
|
|
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Noise Figure / Reverse Isolation |
< 3 dB / > 20 dB |
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1 dB Compression |
-25 dBm |
|
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DC Voltage Required |
3.0 V to 12 V (Other voltages on special
request) |
|
|
DC Current of amplifier |
11 mA Max |
|
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Max DC Current to antenna |
75 mA |
With 5V going to antenna |
|
Max DC Current to antenna |
30 mA |
With 3V going to antenna |
|
Connectors |
N type female as standard. |
Other connectors on special order |
|
Size |
158.0 mm x 30.0 mm x 26.2 mm |
Including the connectors |
|
Weight |
250 grams |
|
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Environmental |
-20 °C to +60 °C |
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Option 01 |
External DC Connector. Now fitted as standard
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+3 to +5 V @ 11 mA |
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Option 02 |
External power supply for option 01 or 03 |
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Option 03 |
External DC connection for antenna |
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Option 04 |
Gain increased to 10 dB ± 2 dB |
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