HomeCompanyProductsServicesReference SitesEnquiryContact Us


PRODUCTS
 

 LMDS / MMDS System

Since 1997, we have been the authorized contractor for StarHub Cable TV(formerly Singapore CableVision) for providing installation and engineering services for their Multi-point Multi-channel Distribution System or MMDS for commercial sector such as commercial buildings, pubs, hotels, clubs etc.

We had also been contracted by local ISP for the installation of Local Multi-point Distribution Services or LMDS, a broadband wireless line-of-sight point-to-multipoint communication system that offer a cost-effective last mile solution that service providers can adopt to connect their subscribers to a high speed Internet backbone.  

LNBY - Integrated Antenna Downconverter
Parabolic Antennas and Passive Feeds

LNBY - Integrated Antenna Downconverter


CALAMP 131534 -
31 Channel High Gain LNBY



California Amplifier's integrated antenna downconverter (LNBY) 
provides a high performance compact solution for MMDS reception.

Downconverter:
RF Input Frequency 2500 - 2686 MHz
RF Output Frequency 222 - 408 MHz
LO Frequency 2278 MHz ± 15 KHz
LO Frequency Stability ± 30 KHz; ± 50 KHz Max.
Noise Figure 1.7 dB
Gain 32 ± 3 dB
Gain Flatness ± 1.5 dB; ± 0.25 dB/6 MHz
Phase Noise -85 dBc/Hz @ 10 KHz
Image Rejection 45 dB
IF Rejection -75 dB
RF Output Level (Max) with 31 channels each 33 dBmV
Output Connector F-Type Female, 75 Ohms
Supply Voltage +16 to +24 VDC
Current 225 mA
Operating Temperature -40°C to +70°C
Finish Polyurethane Powder Coat Paint
Physical Size 5.2 x 5.2 x 2.7 in.
Yagi Director Length 21.5 in.
Weight 20 oz.

Antenna Specifications: (with Yagi director)
Gain 17 dBi
Front to Back Ratio 18 dB
Side Lobe Level -12 dB
3-dB Beam Width 24°
Cross Polarization Rejection -20 dB

Adobe PDF icon


 

Parabolic Antennas and Passive Feeds


CALAMP 130094/130135 -
24 dBi QLP Parabolic Assembly



California Amplifier's high performance parabolic antennas provide 
unparalleled performance across the MDS, ISM and MMDS bands.

Electrical:
Frequency Range (MHz) 2150-2162 2400-2483 2500-2700
Gain 22 dB ± 1 dB 23.5 dB ± 1 dB 24 dB ± 1 dB
Efficiency 47% 48% 50%
VSWR 1.5:1 1.5:1 1.5:1
3-dB Beamwidth 12.5° ± 0.5° 10.0° ± 1.0° 9.75° ± .75°
Side Lobe Level -18 dB ± 2dB -20 dB ± 3dB -20 dB ± 3dB
Front to Back Ratio
over near hemisphere 21 dB 21 dB 21 dB
at 180 degrees 28 dB 28 dB 28 dB
Polarization Vertical or Horizontal Vertical or Horizontal Vertical or Horizontal
Cross Polarization Rejection 28 dB 28 dB 28 dB

Mechanical:
Reflector Type Wire Grid Parabola
Size 27" x 30"
Weight 5.3 lbs
Surface Accuracy 0.05" RMS
Focal Length 15"
F/d Ratio 0.46 - 0.56 Quasi Log Periodic
Feed Type End Fire Array Stainless Steel
Mounting Hardware for 3/4"-2" O.D. Mast
Azimuth Adjustment Continuous
Finish Powder Coat Paint, Gray
Connector N Type Male
Operating Temperature -40°C to +80°C

Adobe PDF icon


 


©2003 
Antechnic Engineering Pte Ltd