Loudhailers from Standard Horizon

220SW Round Hailer/PA Horn
114mm Loud Hailer/PA Horn compatible with most Standard Horizon VHF FM Transceivers and Loud Hailers units.
240SW Rectangular Horn/PA Loudspeaker
The 240Sw is a Waterproof 127 x 203mm rectangular PA Horn/Loudspeaker, that is suitable for mounting on a water craft and is compatible with most Standard Horizon VHF FM Transceivers and Loud Hailer Units.
MLS-300 External Speaker
The MLS-300 External Speaker is a high performance communications speaker matching the impedance and output requirements of most Standard Horizon transceivers.