- Tuneable Tip under Cap.
Maximum efficiency on your favorite channel.
This rugged, flexible, 48″ fiberglass replacement whip is tunable for minimum standing wave ratio and maximum efficiency. Designed as a replacement whip for RadioShack’s #21-973 Adjustable Fiberglass Single Trucker CB Antenna, its standard 3/8″ x 24 thread works with all common CB mounts.
List Price: $ 24.99