Adjusting The Squelch - Humminbird DC 5 Operation Manual

Most control inputs result in audible, tactile, and visual feedback for positive actuation in loud
environments.
POWER AND VOLUME CONTROLS
To power the DC5s for operation, turn the Power/Volume knob clockwise past the detent. The
display will illuminate indicating that power is supplied to the DC5s unit. Continue turning the
Volume knob until the desired audio volume is achieved. It may be necessary to adjust the
squelch first, then adjust the volume once a transmission is received.
To turn the DC5s off, turn the Power/Volume knob counter- clockwise until the detent is felt and
the display is blank.

ADJUSTING THE SQUELCH

The squelch is commonly used to eliminate static and background noise from being heard. To
adjust the squelch, ensure that the unit is powered and sufficient volume is available to hear the
speaker. Turn the Squelch knob counter-clockwise as far as it will go. Adjust the volume to the
desired level. Wait for a period when no transmission is being received, and turn the Squelch
slowly clockwise until the background static is eliminated.
The squelch allows silent operation of the DC5s until a transmission is received. If the Squelch
is adjusted too high, only the strongest transmissions will be heard. If the Squelch is adjusted too
low, intermittent static and noise will be heard.
USING THE PTT
The Push To-Talk switch is located on the side of the DC5s and is easily accessible to both left
and right hand users. To activate the PTT, simply press the raised portion of the switch. A tactile