About the ATNC Interface

The ATNC is an 18 GHz version of the standard TNC interface. The “A” references a modified interface condition where air versus Teflon is employed to reach the extended frequency range. Similar to the standard TNC design, the ATNC is commonly used in applications where it provides a balance of rugged line size, frequency performance and medium power handling capabilities.


ATNCtechnical diagram

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Nominal Impedence50 ohms ohms
Frequency RangeDC to 18 GHz
Voltage Rating500 volts rms
Dielectric Withstanding
1500 volts rms


Mating Characteristicsper MIL-STD-348
Connector Durability500 cycles min.
Recommended Torque23 in-lbs nominal


BodyBrass, Silver or Nickel Plated. Stainless Steel, Passivate
Contacts (Inner)Female: Beryllium Copper, Silver or Gold Plated. Male: Brass, Silver or Gold Plated
Contacts (Outer)Brass, Silver or Nickel Plated
Contacts (Slotted)Beryllium Copper, Silver or Nickel Plated
Gaskets & SealsSilicone Rubber


Tempurature Range-85°F to +329°F (-65°C to +165°C)
VibrationMIL-STD-202 Method 204
ShockMethod 213
Moisture ResistanceMIL-STD-202 Method 106
Corrosion (salt spray)MIL-STD-202 Method 101

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ATNC Performance Charts