Overview: These combiners for two or three transmitters were conceived to couple two or three transmitting frequencies on one antenna. Besides the power restriction due to the type of cavity that is used, the diplexers and triplexers are also limited by the frequency range. The distance between the various frequencies must be greater than 3 MHz. The triplexers must be factory tuned.
TECHNICAL SPECIFICATIONS
Starpoint Diplexers FSD800 & 2000
Frequency range 87.5 - 108 MHz
Typical insertion loss 0.7 dB (FSD 800) 0.5 dB (FSD2000)
Min. freq. spacing 3 MHz
Impedance 50 Ohms
Connectors FSD 800 input N type / output 7/8 EIA
FSD 2000 input 7/8 EIA / output 1+5/8
Power rating FSD 800: 800 W each channel max
FSD 2000 W each channel max.
VSWR 1.1:1 typical
Isolation btwn channels 25 - 50 dB (dep. on dist. btwn channels)
Materials ext.: aluminum – int.: silver plated copper
Color black
Weight 44 Lbs (20 kg) FSD 800
62 Lbs (28 kg) FSD 2000
Temperature range 20° to 120° F (-8° to 50° C)
Dimensions FSD800: 44”×8”×16” (1100×200×400 mm)
FSD2000: 56”×26”×18” (1400×650×450 mm)
Packing FSD800: 52”×9”×17” (1300×225×425 mm)
FSD2000: 58”×28”×20” (1450×700×500 mm)
Triplexers FST800 & 2000
Frequency range 87.5 - 108 MHz
Typical insertion loss 0.8 dB (FST 800) 0.6 dB (FST2000)
Min. freq. spacing 3 MHz
Impedance 50 Ohms
Connectors FST 800 input N type / output 7/8 EIA
FST 2000 input 7/8 EIA / output 1+5/8
Power rating FST 800: 800 W each channel max
FST 2000 W each channel max.
VSWR 1.1:1 typical
Isolation btwn channels 25 - 50 dB (dep. on dist. btwn channels)
Materials ext.: aluminum – int.: silver plated copper
Color black
Weight 66 Lbs (30 kg) FSD 800
93 Lbs (42 kg) FSD 2000
Temperature range 20° to 120° F (-8° to 50° C)
Dimensions
FST800: 43”×8”×24” (1100×200600 mm)
FST2000: 56”×26”×28” (1400×650×700 mm)
Packing
FST800: 48”×9”×25” (1200×225×625 mm)
FST2000: 58”×28”×30” (1450×700×750 mm)