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” will appear on the display, indicating that the Menu (“Set”) Mode has been activated.

4. Press the [SQL] key to select the Menu item “04 tEP”.

5. Press the [T] or [S] 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 (“°FÆ°C” or “°CÆ°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 transmission 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

 

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