In this guide
An F-type connector is a threaded, 75 Ω coaxial RF connector used for cable TV, satellite TV, over-the-air antennas, and cable modems — typically fitted to RG-6 or RG-59 coaxial cable.
- Cable is RG-6 or RG-59 with correct impedance (75 Ω)
- Connector is compression or crimp type, properly installed
- Male and female ends are correctly threaded together (3/8-32 UNEF)
- Gender or threading is mismatched, causing a loose or missing connection
- Twist-on connector has worked loose over time
- Corrosion or over-tightening has damaged the center pin or dielectric
What Does an F-Type Connector Look Like?
The F-type connector has a distinctive threaded barrel with a thin center pin that is usually the exposed inner conductor of the coaxial cable itself. The male plug has internal threads and a protruding pin. The female jack has external threads and a center socket. Both ends screw together for a secure, shielded connection.
It is standardized under IEC 61169-24:2019 and supports frequencies from DC up to several GHz, making it suitable for modern cable and satellite signals.
Common Uses
- Cable TV and cable modem connections
- Satellite TV dish and receiver wiring
- Over-the-air (OTA) TV antenna runs
- CCTV and home surveillance systems
F-Type Connector Comparison Table
| Setup | Works? | Need | Note |
|---|---|---|---|
| RG-6 + compression F connector | Yes | Compression tool | Best seal, most reliable |
| RG-6 + crimp F connector | Yes | Crimp tool | Good for indoor runs |
| RG-59 + F connector | Yes | Correct RG-59 fitting | Lower bandwidth than RG-6 |
| Twist-on F connector | Sometimes | None | Prone to loosening, signal loss |
| F connector above 1 GHz with corrosion | No | Replace connector | Oxidation degrades high-freq signal |
Connector Types: Crimp vs Compression vs Twist-On
Compression connectors create the tightest seal and are best for outdoor runs or anywhere moisture is a concern. Crimp connectors are a solid choice for indoor installs and are widely available. Twist-on connectors require no tools but are the least reliable — they can loosen and introduce interference over time. For any permanent installation, avoid twist-on types.
Is F-Type the Same as Other RF Connectors?
No. The F-type is specific to 75 Ω systems. It is not compatible with BNC, RCA, or N-type connectors without an adapter. If you are working with video over coax or other RF setups, check our guide on coaxial cable types and compatibility to confirm you have the right connector. For digital video connections over other cable types, see whether USB-C can connect to HDMI as an alternative signal path.
Bottom line: The F-type connector is the standard choice for any 75 Ω coaxial run involving TV, satellite, or cable internet. Use compression fittings on RG-6 cable for the most reliable, long-lasting connection, and always check that male and female ends are properly threaded before assuming a signal problem lies elsewhere.