Coaxial Antenna Renkforce SKB 488-40 for 40 m band

Coaxial Antenna Renkforce SKB 488-40 for 40 m band is a single-band antenna solution for amateur radio use on the 7 MHz (40 m) frequency. The product includes a 40 m coaxial cable with high shielding and multiple F-connectors, designed to provide stable signal transmission for transmitting and receiving on the 40 m amateur band. The heavy shielding and waterproof F-connectors make the cable suitable for long feed lines and outdoor installations where reduced interference and long-distance runs are required.

Advantages

The high-shielding coaxial cable (100 dB) reduces electromagnetic interference and maintains signal integrity over long distances. Waterproof F-connectors included and one pre-mounted F-connector with rubber sleeve ensure reliable, weather-resistant terminations. The 40 m cable length allows flexible placement of the antenna away from the transceiver, and the design supports both transmission and reception on the 7 MHz amateur band.

Suitable for

• Amateur radio operators using the 40 m (7 MHz) band
• Home or portable HF stations requiring a single-band 40 m antenna feed
• Long cable runs where high shielding and waterproof connectors are needed

Key specifications

• Brand: Renkforce
• Model: SKB 488-40
• Manufacturer part number (MPN): 1399967
• EAN: 4016139045436
• Cable length: 40 m
• Cable type: Coaxial (koax)
• Connector A (end): open end
• Connector B: F-connector (one pre-mounted with rubber sleeve; three additional F-connectors and one spare rubber sleeve included)
• Shielding: 100 dB

How to use

Connect the open end of the coaxial cable to the antenna feedpoint and attach the F-connector end to a compatible adapter or equipment with an F-type input as required. If needed, fit the additional F-connectors provided following the manufacturer’s instructions and ensure rubber sleeves are in place for weatherproofing. Route the 40 m cable to minimize bends and avoid parallel runs with power lines to reduce possible interference. Verify coax continuity and impedance match with appropriate antenna analyzer or SWR meter before transmitting.

Usage recommendations

For best performance on the 40 m amateur band, mount the antenna at a suitable height and keep the coaxial run as direct as possible. Use the waterproofed F-connectors outdoors and inspect connector seals periodically to maintain weather resistance. When installing long runs, use strain relief at attachment points to protect connectors and cable integrity.