81-37-15 Series

Image of Isolators

81-37-15 Series

81-37-15 Series, 144-174 MHz, Single-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 81-37-15-00 81-37-15-20 81-37-15-50 81-37-15-60 81-37-15-100
RF Load #None82-01-05 82-01-1682-01-1782-01-15
Continuous RF None5 W25 W60 W100 W
Dimensions, HxWxD [inches(mm)] 3.94 x 3.75 x 1.78
(100 x 95 x 45)
5.0 x 3.75 x 1.78
(127 x 95 x 45)
8.81 x 3.75 x 1.78
(223 x 95 x 45)
9.91 x 3.9 x 1.78
(252 x 99 x 45)
9.91 x 3.9 x 2.9
(252 x 99 x 45)
Weight, lb. (kg) 1.40 (0.64)1.58 (0.72)2.04 (0.93)2.68 (1.21)3.41 (1.54)

 


Product Specifications 
Item No81-37-15 Series
Item Name144-174 MHz, Single-Junction Circulator and Isolator
Frequency Range144-174 MHz
Number of Junctions1
Junction TypeLumped Constant
Max Continuous Input Power150 W
Isolation Bandwidth2.5% of center frequency (dB)
Typical Insertion Loss0.45 dB
Insertion Loss0.5 dB
Peak Reverse Isolation> 30 dB
Min Reverse Isolation> 25 dB
Impedance Ω50
Min Return Loss - VSWR20 dB (1.22 :1)
Temperature Range-30 to +60 °C
Connectors Input-Output-LoadN