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81-83C-25 Series
Isolators and Circulators
81-83C-25 Series

81-83C-25 Series, 764-776 MHz, Dual-Junction Circulator and Isolators are designed to provide the specified isolation under continuous duty at maximum power. Their conservative, rugged design and construction have a record of excellent reliability and high performance established through over 20 years of service in critical systems.

Isolators
  • Provides rated isolation at rated continuous power
  • Standard isolator loads rated to protect against antenna system failure
Circulators
  • Available dual or single junction versions from 118-250 MHz, 300-530 MHz and 746-960 MHz
  • Small package outline
  • Up to 250 watts power handling
  • High isolation throughout bandwidth (no-tuning)
  • Low insertion loss
  • Low PIM Design
  • Wide operation temperature range
  • RoHS compliant
  • Various connector options available
  • Ideal for applications with minimal guard band between transmit and receive frequencies
Part Number 81-83C-25-00 81-83C-25-20 81-83C-25-50 81-83C-25-60 81-83C-25-100
RF Load # None 82-01-05
82-01-05
82-01-05
82-01-16
82-01-05
82-01-17
82-01-05
82-01-15
Continous RF
Load Power
None 10/5 W 10/25 W 10/60 W 10/100 W
Dimensions, HxWxD
inches(mm)]
5.63 x 6.38 x 1.84
(143 x 162 x 47)
6.66 x 6.38 x 1.84
(169 x 162- x 47)
10.41 x 6.38 x 1.84
(264 x 162 x 47)
11.59 x 6.38 x 1.84
(294 x 162 x 47)
11.59 x 6.77 x 2.90
(294 x 172 x 74)
Weight, lb. (kg) 2.79 (1.27) 3.15 (1.43) 3.61 (1.64) 4.25 (1.93) 4.97 (2.26)
Isolators and Circulators
81-83C-25 Series
product specifications:
Item No
81-83C-25 Series
Item Name
764-776 MHz, Dual-Junction Circulator and Isolator
Frequency Range
764-776 MHz
Number of Junctions
2
Junction Type
Distributed Parameter
Max Continuous Input Power
150 W
Isolation Bandwidth
2.5% of center frequency (dB)
Typical Insertion Loss
0.5 dB
Insertion Loss
0.65
Peak Reverse Isolation
> 60 dB
Min Reverse Isolation
> 50 dB
Impedance Ω
50
Min Return Loss - VSWR
20 dB (1.22 : 1)
Temperature Range
-30 to +60 °C
Connectors Input-Output-Load
N
compatible devices: