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GPS L1 Band Re-radiator Kit - RK304
L1-Signal Re-radiator Designed For Receiving GPS Signals Indoors
RK-304 is an excellent GPS L1 band signal re-radiator featuring dual antennas to re-transmit real-time GPS satellite outdoor receptions to an indoor environment. Designed to operate as a whole, the system kits are composed of a highly-sensitive external GPS antenna, precisely calibrated amplifier circuit with Helix type indoor re-radiator antenna and a built-in power supply regulator. The Helix type indoor antenna system allows multiple GPS receiver users to perform on-the-fly normal receiver operation within a closed environment, while the main GPS antenna is installed on an unmanned location outdoor.
The GPS L1 signal is a 1575.42 MHz frequency, along with a 1.023 Mbps Bi-Phase shift Keying (BPSK) modulated spreading code. The input signal power at the receiving antenna is approximately -130 dBm (spread over 2 MHz). In addition, the unit is designed as plug-n-play hardware and it can be installed either permanently to a secured location or quickly at users' convenience by using either screw mounting or glass suction cup, respectively, for the indoor re-radiator helix antenna. |
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Features
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Excellent Signal Reception: Re-radiating distance is around 30 meters from the re-radiating antenna. In addition, full receiver visibility of GPS satellites outdoor comes along with an amplified re-radiated signal indoor.
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Highly Integrated System: Designed to operate as a whole, the system kits are composed of a high-gain external GPS antenna, a precisely calibrated amplifier circuit with a Helix type indoor re-radiating antenna and a built-in power supply regulator that provides systems with power. The unit is designed as plug-n-play hardware and it can be installed either permanently to a secured location or quickly at users' convenience by using either screw mounting or glass suction cup, respectively, for the indoor re-radiator helix antenna.
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Efficiency & Convenience: The re-radiator transmits real time data throughout the vehicle directly to an unlimited number of users. Multiple GPS receivers or hand-helds can share just one re-radiator to receive timely data.
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Power Saving: Thanks to its GPS Power Saver desgin, the system uses an independent power supply source, saving users from the need of other power source for their GPS unit.
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Easy-to-Setup: No additional cables are required and no external GPS antennas are needed to be plugged and unplugged when using a GPS receiver inside the vehicle.
Applications
- LABORATORY
- MOBILE HOMES
- OFFICES
- TRUCKS
- TRAINS
- SHIPS
- SAILING BOATS
- BUSES etc.
Precaution:
THE INDOOR ANTENNA MUST BE TOTALLY ISOLATED AND DOES NOT HAVE A LINE OF SIGHT TO THE EXTERNAL GPS ANTENNA, SO AS TO AVOID FEEDBACK RELECTED RF SIGNAL. |
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Specifications
| External Antenna Electrical
Specifications, TA=25oC (The standard cable length 40 meters, but can be customized) |
Description |
Parameter |
Min |
Typ |
Max |
Units |
Frequency |
L1 band |
-- |
1.575 |
-- |
GHz |
Bandwidth |
-- |
-- |
50 |
-- |
MHz |
Amp Gain |
-- |
-- |
28 |
-- |
dB |
Noise Figure |
-- |
-- |
1.3 |
-- |
dB |
Output SWR |
-- |
-- |
2.0:1 |
-- |
ratio |
DC Input |
-- |
4.5 |
-- |
5.5 |
Vdc |
| Re-Radiating
Antenna System Electrical Specification, TA=25oC |
Description |
Parameter |
Min |
Typ |
Max |
Units |
Frequency |
L1 band |
-- |
1.575 |
-- |
GHz |
Bandwidth |
-- |
-- |
20 |
-- |
MHz |
Impedance |
-- |
-- |
50 |
-- |
ohm |
Gain |
-- |
-- |
30 |
-- |
dB |
Noise Figure |
-- |
-- |
2.0 |
-- |
dB |
Output SWR |
-- |
-- |
1.6:1 |
-- |
ratio |
Element |
Helix type |
-- |
-- |
-- |
-- |
Polarization |
RHCP |
-- |
-- |
-- |
-- |
RF Out |
at 1dB gain compression |
-- |
-2.0 |
-- |
dBm |
DC Input |
-- |
+6 |
-- |
+30 |
Vdc |
Consumption |
-- |
-- |
55 |
-- |
mA |
Re-radiating
Distance: around 30 meters from the re-radiating
antenna
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