1.85mm(V) vs 2.4mm vs 2.92mm(K) : Specifications, Key Differences, and Selection Guide
Quick Answer for Engineers
1.85 mm (V), 2.4 mm, and 2.92 mm (K) connectors are precision RF coaxial connectors designed for high-frequency applications. While all three use a threaded coupling and maintain a 50 Ohm impedance, they differ in maximum operating frequency, connector interface, and intended applications.
The 2.92 mm connector supports frequencies up to 40 GHz and is widely used in RF testing and communication equipment. The 2.4 mm connector extends performance to 50 GHz, while the 1.85 mm connector offers the highest frequency capability of the three, supporting applications up to 67 GHz.
Quick Summary
・Purpose: All – Precision high-frequency RF measurements
・Maximum Frequency: 2.92 mm – 40 GHz / 2.4 mm – 50 GHz / 1.85 mm – 67 GHz
・Coupling: All – Threaded
・Performance: Higher frequency capability as connector size decreases
・Applications: Choose the connector based on operating frequency and system requirements
What Are 1.85 mm Connectors?
1.85 mm (V) connectors are precision RF coaxial connectors designed for high-frequency applications up to 67 GHz.
They provide excellent electrical performance, low VSWR, and reliable mechanical durability, making them widely used in RF test equipment, aerospace, defense, and laboratory measurement systems.
Specifications
・Impedance: 50 Ohm
・Coupling: Threaded
・Frequency Range: DC to 67 GHz
・Typical Use: RF testing, aerospace, defense, and laboratory equipment
What Are 2.4 mm Connectors?
2.4 mm connectors are precision RF coaxial connectors designed for high-frequency applications up to 50 GHz.
They provide excellent electrical performance, low VSWR, and reliable mechanical durability, making them suitable for RF measurement equipment, microwave systems, communication devices, and research laboratories.
Specifications
・Impedance: 50 Ohm
・Coupling: Threaded
・Frequency Range: DC to 50 GHz
・Typical Use: RF testing, microwave systems, communication equipment
What Are 2.92 mm Connectors?
2.92 mm (K) connectors are precision RF coaxial connectors designed for frequencies up to 40 GHz.
They combine excellent electrical performance with strong mechanical durability and are widely used in RF testing, communication systems, microwave equipment, and general-purpose high-frequency applications.
Specifications
・Impedance: 50 Ohm
・Coupling: Threaded
・Frequency Range: DC to 40 GHz
・Typical Use: RF testing, communication systems, microwave equipment
Side-by-Side Comparison Table
Primary Purpose / High-Frequency RF Measurement / High-Frequency RF Measurement / High-Frequency RF Measurement / All are designed for precision RF applications.
Maximum Frequency / DC to 67 GHz / DC to 50 GHz / DC to 40 GHz / Select the connector based on the required operating frequency.
Coupling Mechanism / Threaded / Threaded / Threaded / All provide secure and stable RF connections.
Impedance / 50 Ohm / 50 Ohm / 50 Ohm / All are standardized for precision RF systems.
Connector Interface / 1.85 mm / 2.4 mm / 2.92 mm / Smaller interfaces support higher operating frequencies.
Typical Applications / Aerospace, defense, RF testing / RF measurement, microwave systems / RF testing, communication systems, microwave equipment / Select according to frequency and application requirements.
Compatibility / Not Directly Compatible / Not Directly Compatible / Not Directly Compatible / Each connector uses a different interface size.
Key Differences Explained
1. Maximum Operating Frequency
The most significant difference among these connector types is their maximum operating frequency.
・1.85 mm: Up to 67 GHz
・2.4 mm: Up to 50 GHz
・2.92 mm: Up to 40 GHz
Selecting the correct connector depends primarily on the highest operating frequency required by the system.
2. Connector Interface Size
As the connector interface becomes smaller, it supports higher frequencies by reducing signal reflections and maintaining better electrical performance.
However, smaller interfaces require more careful handling during installation.
3. Typical Applications
1.85 mm
・Aerospace
・Defense
・RF testing
・High-frequency laboratory equipment
2.4 mm
・RF measurement equipment
・Microwave communication
・Research laboratories
・Precision RF systems
2.92 mm
・RF communication equipment
・Microwave systems
・General RF testing
・Laboratory instruments
4. Which Connector Should You Choose?
Choose the connector according to your required operating frequency.
・1.85 mm is the preferred choice for applications requiring performance up to 67 GHz.
・2.4 mm provides higher frequency capability up to 50 GHz.
・2.92 mm is suitable for applications up to 40 GHz.
Are They Compatible?
No.
Although all three connector types are precision RF connectors with threaded coupling and 50 Ohm impedance, they have different interface dimensions and are not directly compatible.
Using the wrong connector may damage the interface or degrade RF performance. Precision adapters should be used whenever different connector types must be connected.
How to Choose Between 1.85 mm, 2.4 mm, and 2.92 mm
1. Choose 1.85 mm when…
・Frequencies up to 67 GHz are sufficient.
・General RF measurement equipment is used.
・Aerospace or defense applications require reliable RF performance.
・Long-term mechanical durability is important.
2. Choose 2.4 mm when...
・Frequencies up to 50 GHz are required.
・Lower signal loss at higher frequencies is important.
・Precision microwave measurements are performed.
・Laboratory or research applications demand excellent RF performance.
3. Choose 2.92 mm when...
・Frequencies up to 40 GHz are sufficient.
・General-purpose RF measurements are performed.
・Communication or microwave systems are being developed.
・A robust connector for routine testing is preferred.
Technical Specifications Summary
Item / 1.85 mm / 2.4 mm / 2.92 mm
Maximum Frequency / DC to 67 GHz / DC to 50 GHz / DC to 40 GHz
Coupling / Threaded / Threaded / Threaded
Impedance / 50 Ohm / 50 Ohm / 50 Ohm
Connector Interface / 1.85 mm / 2.4 mm / 2.92 mm
Primary Application / Aerospace, defense, RF testing / RF measurement, microwave systems / RF testing, communication systems
1.85 mm vs 2.4 mm vs 2.92 mm FAQs
QWhat is the main difference between 1.85 mm, 2.4 mm, and 2.92 mm connectors?
QWhat is the main difference between 1.85 mm, 2.4 mm, and 2.92 mm connectors?
The primary difference is the maximum operating frequency. The 2.92 mm connector supports frequencies up to 40 GHz, the 2.4 mm connector up to 50 GHz, and the 1.85 mm connector up to 67 GHz.
QCan these connector types be connected directly?
QCan these connector types be connected directly?
No. Each connector has a different interface size and is not directly compatible with the others. A precision adapter is required when connecting different connector types.
QWhich connector offers the highest frequency performance?
QWhich connector offers the highest frequency performance?
Among these three connectors, the 1.85 mm connector supports the highest operating frequency at 67 GHz, making it suitable for demanding RF measurement and high-frequency applications.
QWhy would I choose a 2.92 mm connector instead of a 2.4 mm connector?
QWhy would I choose a 2.92 mm connector instead of a 2.4 mm connector?
A 2.92 mm connector is ideal for applications up to 40 GHz where robust mechanical performance and cost-effective high-frequency connectivity are required. It is widely used in RF testing, communication systems, and microwave equipment.
QIs the 2.4 mm connector a good balance between performance and frequency?
QIs the 2.4 mm connector a good balance between performance and frequency?
Yes. The 2.4 mm connector provides an excellent balance of high-frequency capability (up to 50 GHz) and mechanical durability, making it suitable for precision RF measurements and laboratory applications.
QWhich connector is commonly used for aerospace and defense applications?
QWhich connector is commonly used for aerospace and defense applications?
The 1.85 mm connector is widely used in aerospace, defense, and advanced RF measurement systems because of its excellent electrical performance and support for frequencies up to 67 GHz.
QHow do I choose the right connector?
QHow do I choose the right connector?
Choose the connector based primarily on your system's maximum operating frequency and application requirements. In general, 2.92 mm is suitable up to 40 GHz, 2.4 mm up to 50 GHz, and 1.85 mm up to 67 GHz, allowing you to select the most appropriate connector for your RF system.
Purchase Guide
Tyclon coaxial connectors and processed coaxial cable products can be purchased directly online using a variety of credit cards.
