73-83E-11 Series

Image of T-Pass 73-35A-01

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.


  • 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 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 234581012
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
Product Specifications 
Item No73-83E-11 Series
Item Name764-869 MHz, T-Pass Combiner, 6.625" Cavity
Frequency Range764-869 MHz
Cavity Type and Diameter3/4-wave, 6.625" (168 mm)
Maximum Continuous Transmit Power125 W
Isolator Load Pwr Continuous73-83E-11-2C-nn: 5 W/60 W [Note 3]
73-83E-11-2D-nn: 5 W/100 W
Min Tx-Tx Separation at Cavity Loss450 kHz @ -1.25 dB
250 kHz @ -1.8 dB
Typical Tx-Tx Isolation at Min Separation80 dB
Typical Antenna - Tx Isolation70 dB
Typical Tx Noise SuppressionDepends on cavity loss
Impedance Ω50
Maximum Input Return Loss - VSWR-20 dB (1.22:1)
Temperature Range-30 to +60 °C
Connectors - Input and AntennaN
MountingPeg Rack®
Mounting OptionsMA: 14" x 19" rackmount adapter plates
LR: System supplied without Peg Rack® [Notes 4,5]
Maximum Channels - Rack15 [Note 4]
Dimensions65.25" x 24" x 21.7" (H x W x D) [Note 6]
(1659 x 610 x 552 mm)
Weight - Basic Single Channel73-83E-11-2C-nn: 31 lbs. (14.0 kg)
73-83E-11-2D-nn: 32 lbs. (14.5 kg)
Weight - Expansion Channel Assy73-83E-11-2C-nn: 12 lbs. (5.4 kg)
73-83E-11-2D-nn: 13 lbs. (5.9 kg)

Compatible Devices:

Image of 21-83C-11-xx-T Series

21-83C-11-xx-T Series
746-776 MHz, T-Pass Expansion Channels

Image of 21-83C-11-xx-T Series

21-83D-11-xx-T Series
851-869 MHz, T-Pass Expansion Channels