Sigma 9ft Stainless Steel CB Tank Whip Antenna 1/4 Wave, 1000W, 26-28MHz, 3/8" Thread

The Sigma Tank Whip is a 9-foot (2.75m) two-piece stainless steel 1/4-wave CB antenna, pre-tuned for CB channels (26–28 MHz) and rated at 1000W. Popular for static hilltop and portable DX operating rather than everyday mobile use — the 9ft length makes it impractical for driving but delivers outstanding performance when set up on high ground. The two-piece design splits in half for easy transportation: the lower half is thick and rigid, the upper half is a standard whip that slots in and is secured with a grub screw. Standard 3/8"x24 thread base fits any standard 3/8" mount — note that a strong, heavy-duty mount is essential given the antenna's length and wind loading. Can be trimmed to cover 10m (28–29.7 MHz) instead of CB. VSWR 1.2:1. 50-ohm impedance.

Please note: No mount or cable is included. A strong 3/8" mount is required.

Key Features

• 9ft (2.75m) 1/4-wave stainless steel CB whip
• 1000W power handling
• Pre-tuned for CB: 26–28 MHz (trimmable for 10m)
• VSWR: 1.2:1
• 50-ohm impedance
• 3/8"x24 thread — fits standard 3/8" mounts
• 2-piece design — splits for easy transportation
• Stainless steel construction
• Ideal for static hilltop & portable DX use
• Mount & cable not included

Technical Specifications

• Type: 1/4-wave stainless steel CB whip
• Frequency: 26–28 MHz (CB) / trimmable for 10m
• Power: 1000W
• VSWR: 1.2:1
• Impedance: 50 ohms
• Length: 2.75m (9ft)
• Thread: 3/8"x24
• Construction: 2-piece stainless steel