73-67-25 Series

Image of T-Pass 73-35A-01

73-67-25 Series

73-67-25 Series, 406-512 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

  • 73-67-25-2B-nn
  1. -nn in model number represents the number of channels.
  2. These specifications are applicable to 406-512 MHz models.
  3. Models available with 5W/60W loads. Same specifications as 25W and 100W models, except load power.
  4. -MC option reduces maximum number of channels to ten 10-inch or twelve 6.625-inch channels 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 5.1” (130 mm).

 

73-67-25 Series Systems (10"Cavity Diameter)

Tx-Tx Separation Cavity LossMaximum Power
1 MHz-1.5 dB150 W
250 kHz-1.5 dB150 W
125 kHz-2.0 dB150 W
75 kHz-2.5 dB125 W

Loss (dB) vs. No. of channels

Tx-Tx Separation 24812
1 MHz-2.4-2.5-2.8-3.1
250 kHz-2.7-3.2-3.7-4
125 kHz -3.4-4.4-5.0-5.5
75 kHz-4.3-5.6-6.6-7.1

Downloads:

Manual


Product Specifications 
Item No73-67-25 Series
Item Name406-512 MHz, T-Pass Combiner, 10" Cavity
Frequency Range406-512 MHz
Cavity Type and Diameter3/4-wave, 10” (254 mm)
Maximum Continuous Transmit Power150 W
Isolator Load Pwr Continuous5 W/25 W [Note 3]
Min Tx-Tx Separation at Cavity Loss150 kHz @ -1.5 dB
75 kHz @ -2.5 dB
Typical Tx-Tx Isolation at Min Separation
Typical Antenna - Tx Isolation
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 OptionsMC:19" rackmount adapter plates, 17.5" high
LR: System supplied without Peg Rack® [Notes 4,5]
LR: System supplied without Peg Rack® [Notes 4,5]
Maximum Channels - Rack12 [Note 4]
Dimensions79.5” x 24” x 36” (H x W x D) [Note 6]
(2019 x 610 x 914 mm)
Weight - Basic Single Channel14 lbs. (18.6 kg)
Weight - Expansion Channel Assy19 lbs. (8.6 kg)

Compatible Devices:

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21-70-25-xx-T Series
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21-71-25-xx-T Series
470-490 MHz, T-Pass Expansion Channels

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21-72-25-xx-T Series
490-512 MHz, T-Pass Expansion Channels

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21-75-25-xx-T Series
510-530 MHz, T-Pass Expansion Channels