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Outlines:
AS-390A/SRC - Product Outline
Data Sheet:
AS-390A/SRC - Data Sheet
AS-390A/SRC
Model Number:  AS-390A/SRC
Part Number: RAM390-1A
NSN:  5820-00-519-9886
Market:  Military -> Sea
Description: 
The AS-390A/SRC Antenna is designed for omni-directional UHF communications. The antenna is an unbalanced, broadband coaxial stub antenna for shipboard application and consists of a radiating element and a counterpoise ground plane. It mounts via a threaded stub protruding from the ground plane with a 3/4-14 NPSM straight pipe thread. The antenna is manufactured and qualified to specification NAVSHIPS 91338 and Navy drawing RE66D585.
Product Specifications
Application:  Shipboard UHF Communications
Frequency: 225 to 400 MHz
Impedance:  50 Ohms Nominal
VSWR:  2.3 to 1 Maximum
Polarization:  Vertical
Pattern:  Omni-Directional
Connector:  "N" Female
Max Weight:  7 lb
RF Power Capacity: 100 Watts CW
Gain: N/A