Brand: Kaunosta

Stop Guessing if It Will Fit. Standard UHF bulkheads top out at 3/8" panel thickness. For marine hulls (1/2"-3/4"), RV roofs, or Jeep hardtops, you need the Kaunosta Connector Extended Adapter. Don't force a short connector to do a long connector's job. Kaunosta UHF SO239 Female to UHFSO239 Female Coaxial Adapter Connector Coupler Joiner for CB Ham Radio Antenna 1.Type:4.5cm Long Type UHF pl259 to UHF pl259 RF coaxial adapter. 2.Well Constructed and Connection Pins are Gold-plated for Secure Connections,Good for jumpers or cables indoors,CB or HAM UHF cable extention option. 3.Style: Straight. Temperature Range: -55~+155?. Durability: >1000 Times Mating Life Time. 4.Applications: Suitable for Antennas, Broadcast, Radios, Wi-Fi, Telecom, Coaxial cable, LMR, Wireless LAN Devices, Wi-Fi Radios External Antenna and so on. 5.Package Content : 2 x UHF Female to UHF Female Coax Adapters.

• [Solved: Installation on Thick Surfaces] Specifically engineered with a 4.5cm total length to solve the failure point of standard short adapters. While ordinary connectors (limited to 3/8" thickness) fail to pass through fiberglass boat hulls, RV roofs, or thick wooden cabinets, our extended body allows the nut to fully engage on panels up to 25mm thick, preventing the "too short to fit" frustration reported in standard feed-thrus.
• [Low Loss Signal Transmission] Built with a precision-machined Brass Body (Nickel Plated) and Gold-Plated contacts. Features a high-grade PTFE (Teflon) Insulator that withstands soldering heat without melting. Rated for DC-1GHz with VSWR <1.15, matching professional standards for HF/VHF signal clarity in ham radio setups.
• [Secure "Anti-Spin" Locking] The extended barrel provides ample thread engagement for heavy-duty lock washers (included). This ensures the connector won't spin or loosen due to vehicle vibration or heavy cable tension, a critical upgrade for mobile Go-Boxes and off-road builds where stability is paramount.
• [Universal UHF Interface] Standard SO-239 (UHF Female) to SO-239 interface connects two PL-259 male cables. Ideal for passing coaxial lines through walls, bulkheads, or enclosures. The extra length also acts as a strain relief, allowing stiff LMR cables to bend naturally behind the panel without stressing the connection.
• [Technical Specs] Frequency: 0-1GHz. Impedance: 50 Ohm. Total Length: 4.5cm (1.77"). Max Panel Thickness: ~25mm (1"). Thread: 5/8"-24.
• Package: 2x Long Adapters, Nuts, Washers. Salt-spray tested for marine durability.