Intek HT-446S Instruction Manual page 8

Install the external earset-microphone jack rubber cover.
To install the external microphone (optional)
Warning !
If an external earset-microphone is used, radio will not be splash proof.
Preliminary Steps
If an external earset-microphone is not used, please install the earset-
microphone jack rubber cover.
Install the earset-microphone jack rubber cover as showed on the
drawing. FIx the cover with the supplied screw.
If the earset-microphone jack rubber cover is removed, radio will not
be splash proof.
To install the external microphone, remove the protection cover of the
external microphone/speaker jack. This cover ensures the watertight
integrity of the transceiver (spray-guard) that will not be ensured after
its removing. Insert the connector of the external microphone into the
right jack.
In order to avoid mulfunction or damage to the transceiver, use only
original microphones. Using non original accessories will
authomatically void the warranty.
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