T-Pass, Transmit Combiners
73-67-25 Series  |  Enlarge View
T-Pass, Transmit Combiners
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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 Sepration
Cavity Loss
Maximum Power
Loss (dB) vs. No. of channels
2
4
8
12
1 MHz
-1.5 dB
150 W
-2.4
-2.5
-2.8
-3.1
250 kHz
-1.5 dB
150 W
-2.7
-3.2
-3.7
-4
125 kHz
-2.0 dB
150 W
-3.4
-4.4
-5.0
-5.5
75 kHz
-2.5 dB
125 W
-4.3
-5.6
-6.6
-7.1

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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]
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)

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compatible devices:

21-65-25-xx-T Series
406-430 MHz, T-Pass Expansion Channels
21-70-25-xx-T Series
450-470 MHz, T-Pass Expansion Channels
21-71-25-xx-T Series
470-490 MHz, T-Pass Expansion Channels
21-72-25-xx-T Series
490-512 MHz, T-Pass Expansion Channels
21-75-25-xx-T Series
510-530 MHz, T-Pass Expansion Channels

accessories:

93-00 Series
T-Pass, Transmit Combiner Racks