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73-83E-11 Series
T-Pass, Transmit Combiners
73-83E-11 Series

73-83E-11 Series, 764-869 MHz, T-Pass® Combiners
Broadband architecture of the T-Pass® circuit and coaxial cavities mitigates equipment obsolescence and facilitates ease of system reconfiguration when re-banding is necessary. Each System configured for optimum performance. Ideal for applications with minimal guard band between transmit and receive frequencies.

Models
  • 73-83E-11-2C-nn
  • 73-83E-11-2D-nn
  1. -nn in model number represents the number of channels.
  2. Consult factory on T-Pass® multicouplers for frequencies below 806 MHz or above 960 MHz.
  3. Models available with 5W/25W loads. Same specifications as 60W and 100W models, except load power.
  4. -MC option reduces maximum number of channels to 12 per rack.
  5. -LR systems are tuned and tested on customer frequencies, then disassembled for shipping.
  6. Rack depth with cavity tuning rods at maximum frequency. Rod travel is approximately 2.2” (56 mm).
73-83E-11 Series Systems (6.625"Cavity Diameter)
Tx-Tx Sepration 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 Sepration 2 3 4 5 8 10 12
1 MHz -2.1 -2.3 -2.4 -2.5 -2.8 -3.0 -3.3
500 kHz -2.3 -2.8 -3.0 -3.2 -3.6 -3.9 -4.1
450 kHz -2.4 -2.9 -3.2 -3.4 -3.9 -4.1 -4.3
250 kHz -3.1 -3.8 -4.1 -4.4 -4.9 -5.2 -5.5
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T-Pass, Transmit Combiners
73-83E-11 Series
product specifications:
Item No
73-83E-11 Series
Item Name
764-869 MHz, T-Pass Combiner, 6.625" Cavity
Frequency Range
764-869 MHz
Cavity Type and Diameter
3/4-wave, 6.625" (168 mm)
Maximum Continuous Transmit Power
125 W
Isolator Load Pwr Continuous
73-83E-11-2C-nn: 5 W/60 W [Note 3]
73-83E-11-2D-nn: 5 W/100 W
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
Typical Tx Noise Suppression
Depends on cavity loss
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® [Notes 4,5]
Maximum Channels - Rack
15 [Note 4]
Dimensions
65.25" x 24" x 21.7" (H x W x D) [Note 6]
(1659 x 610 x 552 mm)
Weight - Basic Single Channel
73-83E-11-2C-nn: 31 lbs. (14.0 kg)
73-83E-11-2D-nn: 32 lbs. (14.5 kg)
Weight - Expansion Channel Assy
73-83E-11-2C-nn: 12 lbs. (5.4 kg)
73-83E-11-2D-nn: 13 lbs. (5.9 kg)
compatible devices:
21-83C-11-xx-T Series
746-776 MHz, T-Pass Expansion Channels
21-83D-11-xx-T Series
851-869 MHz, T-Pass Expansion Channels
accessories:
93-00 Series
T-Pass, Transmit Combiner Racks