73-90-11 Series

73-67-25 Series, 406-512 MHz, T-Pass® Combiners
TX RX System brand time-proven combiners and multicouplers provide design security for any multichannel radio system.

Model Numbers	Isolator Load Power	Weight, Single Channel	Weight, Expansion Channel
73-90-11-2C-NN	5W/90W	31 (14.0)	12 (5.4)
73-90-11-2D-NN	5W/100W	32 (14.5)	13 (5.9)

73-90-11 Series Systems (6.625"Cavity Diameter)

Tx-Tx Separation	Cavity Loss
1 MHz	-1.25 dB
500 kHz	-1.25 dB
450 kHz	-1.25 dB
250 kHz	-1.80 dB

Loss (dB) vs. No. of channels

Tx-Tx Separation	2	3	4	5	8	10
1 MHz	-2.1	-2.3	-2.4	-2.5	-2.8	-3.0
500 kHz	-2.3	-2.8	-3.0	-3.2	-3.6	-3.9
450 kHz	-2.4	-2.9	-3.2	-3.4	-3.9	-4.1
250 kHz	-3.1	-3.8	-4.1	-4.4	-4.9	-5.2

Downloads:

Datasheet

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Product Specifications
Item No	73-90-11 Series
Item Name	806-960 MHz, T-Pass Combiner, 6.625" Cavity
Frequency Range	806-960 MHz
Cavity Type and Diameter	3/4-wave, 6.625" (168 mm)
Maximum Continuous Transmit Power	150 W @ 450 kHz 125 W @ 250 kHz
Isolator Load Pwr Continuous	See Chart
Min Tx-Tx Separation at Cavity Loss	450 kHz @ -1.25 dB 250 kHz @ -1.8 dB
Typical Tx-Tx Isolation at Min Separation	80 dB
Typical Antenna - Tx Isolation	70 dB
Impedance Ω	50
Maximum Input Return Loss - VSWR	-20 dB (1.22:1)
Temperature Range	-30 to +60 °C
Connectors - Input and Antenna	N
Mounting	Peg Rack®
Mounting Options	MA: 14" x 19" rackmount adapter plates LR: System supplied without Peg Rack®
Maximum Channels - Rack	15
Dimensions	65.25" x 24" x 20.7" (H x W x D) (1659 x 610 x 526 mm)
Weight - Basic Single Channel	See Chart
Weight - Expansion Channel Assy	See Chart

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Compatible Devices:

21-86A-11-xx-T Series
806-824 MHz, T-Pass Expansion Channels

21-87A-11-xx-T Series
851-869 MHz, T-Pass Expansion Channels

21-93-11-xx-T Series
870-890 MHz, T-Pass Expansion Channels

21-95-11-xx-T Series
935-960 MHz, T-Pass Expansion Channels

21-96-11-xx-T Series
929-932 MHZ, T-Pass Expansion Channels

21-98-11-xx-T Series
940-960 MHz, T-Pass Expansion Channels