The RLACS249 is a tuned triple band antenna for reception of GPS L1/L2/L5, GLONASS G1/G2/G3, BeiDou B1/B2, Galileo E1/E5a+b and L-band corrections signals. This antenna provides reception for signals in the bands 1164 MHz to 1254 MHz and 1525 MHz to 1606 MHz. It is housed in a magnetic mount, weather-proof enclosure.
| Antenna | |
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| Antenna Patch Architecture | Circular, Dual Feed, Dual Stacked Patch |
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| E5a/L5 Gain (100 mm ground plane) | -1.5 dBic at Zenith (minimum) |
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| E5b/G3 Gain (100 mm ground plane) | 2.5 dBic at Zenith (minimum) |
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| L2 Gain (100 mm ground plane) | 4.0 dBic at Zenith (minimum) |
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| G2 Gain (100 mm ground plane) | 2.5 dBic at Zenith (minimum) |
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| E1 Gain (100 mm ground plane) | 4.0 dBic at Zenith (minimum) |
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| L1 Gain (100 mm ground plane) | 4.0 dBic at Zenith (minimum) |
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| G1 Gain (100 mm ground plane) | 3.0 dBic at Zenith (minimum) |
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| Typical Axial Ratio @ zenith | |
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| L5/E5ab | <2 dB |
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| L2/B2 | <1.5 dB |
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| G2 | <2 dB |
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| L-Band | <1 dB |
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| L1/E1 | <1 dB |
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| G1 | <1.5 dB |
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| Electrical | |
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| Bandwidth | L2/L5: 1164–1254 MHz (Filter BW) L-band/L1: 1525–1606 MHz (Filter BW) |
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| Overall LNA Gain | 32 dB (typical) |
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| Gain Variation with Temperature | 3 dB maximum over operational temperature range |
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| LNA Noise Figure | 2.5 dB at 25°C (typical) |
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| VSWR (at LNA output) | <1.5:1 (typical), 1.8:1 (maximum) |
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| Supply Voltage Range | +2.5 to 16 V DC nominal, up to 50 mV p-p ripple |
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| EMI Immunity | 50 V/meter, excepting L1±100 MHz and L2±100 MHz |
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| Supply Current | 20 mA at 25°C (typical), 25 mA max at 75°C (maximum) |
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| Out-of-Band Rejection | L5/E5/L2/G2 | L1/E1/B1/G1 |
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| <1050 MHz >45 dB | <1450 MHz >30 dB |
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| <1125 MHz >30 dB | >1690 MHz >30 dB |
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| >1350 MHz >35 dB | >1730 MHz >40 dB |
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