The L-3/Narda 55 is a precision coaxial adapter that connects SMA female (jack) connectors to N-Type male (plug) connectors in RF and microwave systems. This straight, in-line adapter delivers low-loss signal transmission across DC to 18 GHz with a maximum VSWR of 1.25, making it suitable for test, measurement, and communication applications requiring reliable impedance matching. Constructed from stainless steel, the adapter withstands demanding laboratory and field environments while maintaining signal integrity.
## Technical Specifications
• **Frequency Range:** DC to 18 GHz
• **VSWR (Maximum):** 1.25
• **Connector Configuration:** SMA Female (Jack) to N-Type Male (Plug)
• **Style:** Straight
• **Mounting Type:** Free Hanging (In-Line)
• **Material:** Stainless Steel Precision Connectors
## Physical Characteristics
• **Overall Length:** 1.75 in. (44.45 mm)
• **Diameter:** 0.83 in. (21.08 mm)
• **Body Diameter:** 0.625 in. (15.87 mm)
• **Threaded Length:** 0.77 in. (19.05 mm)
• **Mounting Length:** 1.69 in. (42.93 mm)
• **Weight:** 1.5 oz (43 g) maximum
## Key Features
• Precision stainless steel construction for durability in harsh operating conditions
• Low VSWR (1.25 max) ensures minimal signal reflection and loss
• Compact form factor supports space-constrained test setups and inline installations
• DC to 18 GHz bandwidth accommodates broadband RF and microwave applications
## Compatibility & Integration
Connector A: SMA Jack, Female Socket
Connector B: N Plug, Male Pin
The adapter functions as a between-series converter, enabling direct mating of SMA-equipped instruments and cables to N-Type connectors without additional intermediate adapters.
