Enabling S.o.s Strobe Operation - Standard Horizon Hx750s Owner's Manual

6.18.3 CALIBRATING WATER TEMPERATURE SENSOR
If the temperature display is incorrect, it can be re-calibrated via Menu Mode.
1. Turn the transceiver off.
2. Hold down the [ SQL ] key, and then turn on the trans-
ceiver while still holding down the [ SQL ] key.
3. "SEt SEt" will appear on the display, indicating that the Menu
SEt SEt
SEt
("Set") Mode has been activated.
4. Press the [ SQL ] key to select the Menu item "04 tEP
5. Press the [ ] or [ ] key to set the difference between
HX750S display and the calibrated thermometer.
For example, if the HX750S display shows "68.0 °F" and
the (calibrated) thermometer indicates "65.3 °F", set the
temperature offset to "–2.7 °F".
6. Press the [ SQL ] key to save the new setting, then press
the PTT switch to exit to normal operation.
When change the temperature unit ("°F °C" or "°C °F") via Menu Mode,
perform this procedures.
The temperature sensor may not display the correct temperature when
the temperature inside the radio is high; for example, while the trans-
mission mode or high receiver audio output.

6.19 ENABLING S.O.S STROBE OPERATION

The S.O.S. STROBE feature utilizes the high-intensity strobe LED on the front
of the HX750S as a visual distress beacon. When enabled, the LED blinks the
internationally-recognized Morse Code "S.O.S." message ( ... --- ... ) at a rate of
5 words per minute. This can be very useful in summoning help from rescuers
who may not be able to communicate with you via radio.
1. Hold down the [ MEM ] key while turning the radio on to activate the emer-
gency S.O.S. Strobe. Once the radio comes on, the TX/BUSY LED will
flash the Morse Code S.O.S. message repeatedly.
2. The S.O.S. strobe function is interrupted when a signal is received or if the
squelch control is turned so audio is heard from the speaker.
3. To disable the S.O.S. strobe function, turn the radio off and back on again.
HX750S
04 tEP 04 tEP
04 tEP 04 tEP".
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