VHF Antenna Adapters - 2 Types
Adapter for Coaxial Cable Exit and Adapter for Connecting 1" Base to Antenna
M87G and M87W: 4-1/2" adapter with 1"-14 female thread on bottom end; other end accepts 1" stanchion; has outlet hole on side for exit of coaxial cable; available in gold anodized or white
M89W: White aluminum pipe adapter with stainless steel set screws; one end fits 1" stanchion (base tube) and other end is standard 1"-14 thread