BM108 FM Broadcast Base Colinear Antenna 88-108MHz Tunable, 4.5dBd, 270cm, 200W

Tunable 5/8 Wave FM Broadcast Colinear for 88–108MHz

The BM108 is a full-size 5/8 wave colinear base antenna covering the entire FM broadcast band from 88 to 108MHz. A cutting chart is included so you can trim the antenna to your exact operating frequency for a perfect match — ideal for both licensed FM broadcast transmitters and high-quality FM receive installations. With 4.5dBd gain, 200W power handling, and three 86cm radials for a stable ground plane, it delivers a clean omnidirectional pattern suitable for personal or professional use.

Key Features

• Tunable across the full FM broadcast band: 88–108MHz
• 5/8 wave colinear design with 4.5dBd gain
• Cutting chart included for precise frequency tuning
• 200W power handling
• VSWR: 1.5:1 or better (after tuning)
• 3× 86cm radials included for ground plane
• SO-239 socket connection
• Overall length: 270cm
• Suitable for transmit or receive, personal or professional use

Technical Specifications

• Type: 5/8 wave colinear
• Frequency: 88–108MHz (tunable)
• Gain: 4.5dBd
• VSWR: 1.5:1 or better
• Maximum Power: 200W
• Connection: SO-239 socket
• Radials: 3× 86cm
• Length: 270cm