When the key lock is active, a warning beep will be heard if you attempt to press keys (except for the PTT button). While holding Menu button turn the Radio on. To enable or disable the “Key lock” Function: To prevent accidental entries, you can lock the keypad. VOX operation is not recommended if the radio will be used in a noisy or windy environment.Ī. At the lowest level (3), it will pick up only loud The level of VOX sensitivity is shown by a number on the LCD screen (Off to 3 levels).Īt the highest level (1), the unit will pick up softer noise (including background noise). Short time (approximately 2 seconds) after you have stopped talking. In VOX mode, the radio will transmit a signal only when it is activated by your voice or other sound around you. For example, in cases where the battery cover or external jack cap rubber seal is detached from the transceiver or damaged, the transceiver/battery cover/jack cap is cracked or broken, or the transceiver has been dropped.Ī. NOTE: DO NOT submerge the transceiver in water if there is any reason to suspect the waterproof protection may not be effective. (To meet the IP67 waterproof rating, the accessory socket cover must be in place and the antenna and battery must be fitted This provides protection against dust and is capable of withstanding water immersion of up to 1m for 30 minutes. Low indicator will appear in the display.Ī. To switch to low power, select low power in menu mode. The maximum RF transmit power of ULTRA550 is 5 watts.
It provides 104 extra, digital squelch codes that follow after the 38 CTCSS codes. This feautre allows you to receive signals only from callers who have selected the same CTCSS and DCS code. When the radio is in reception mode you will automatically receive communications and the green LED will illuminate.Ī. Wait for approximately 1 second and then speak in the direction of the microphone, and hold the device at a distance of about 5cm from your mouth.
To transmit keep the PTT button firmly pressed and the red LED will illuminate. Rotate the Volume knob until you reach the desired level.Ī. To turn off the transceiver, turn the volume knob fully counter clockwise.Ī. To turn on the transceiver, turn the volume knob clockwise until you hear a click. The use of other types may be dangerous and will void your warranty.Ī. Can I use other charger pods to assist in charging this radio?Ī.
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