|Copy channel and code settings from radio A to radio B.
Internal Voice Operated Transmission (iVOX)/Voice Operated Transmission (VOX)
The microphone detects if you are talking when using VOX. If you are talking, the radio triggers transmission automatically.
You can turn off or select the following settings to select the sensitivity level.
|High Sensitivity for quiet environments. Speaking softly is enough to trigger VOX transmission.
|Medium Sensitivity for most environments
|Low Sensitivity for noisy environments. You must speak up to trigger VOX transmission.
Note: Pressing the PTT button cancels the VOX transmission.
Installing and Charging the Battery
Note: Connect the USB charger to a nearby and easily accessible wall power outlet.
Inserting and Removing Belt Clip
Turning your Radio On and Off
To turn the radio on or off, hold the Power/Menu button until the display turns on or off.
Channel and Codes
When you send a Call Tone, the receiving radio sounds a tone similar to phone ringing tone.
Radio scans for voice activity by cycling through the channels. When signals are detected, the signal is sent to the speaker. This feature allows you to find which channel is being used by other groups and have heavy traffic. This helps you to avoid the busy channels when deciding which channel to use for your group.
You can hear everything including noise on your current radio channel. This feature allows you to monitor a channel for weak signals.
This feature adds a beep to mark the end of a transmission when you release the PTT button. When the receiver hears the roger tone, it is a confirmation that complete message has been received.
This radio is weatherproof to IP54 standards. The radio is resistant to occasional splash of water only when the battery and connector covers are sealed. Do not expose the radio to water for extended period of time. Do not submerge the radio in water.
Use the Menu button to scroll through the menu screen. Press PTT to exit any screen and return to home screen.
|Use the or button to perform the following actions:
|Start or stop Call Tone transmission.
|Start or stop monitoring the air-wave. You can hear signals transmitted on the channel setting of your radio. If there is no signal, you can hear static.
Press or button to monitor and release to stop. After a few seconds of monitoring, you hear a beep sound. After the beep sound, radio continues to monitor even if you release the button.
To stop monitoring, press or again.
|Start or stop scanning the air-wave. Radio scans all the channels one after another. When a signal is detected, you hear the signal on the speaker and the radio displays the channel of the detected signal.
|To change the Voice Operated Transmission (VOX) setting, select OFF or L1 to L3. L3 being the most sensitive, use it in quiet environments.
|Adjust Roger Tone
|Enable or disable the roger tone. Roger tone is a beep tone that you hear when PTT is released.
|Adjust Channel (Channel number blinks)
|Change the radio channel setting.
|Adjust Code (Code number blinks)
|Change the radio code setting.
The rated battery life is measured under industrial standard 5-5-90 duty cycle under lab conditions. (5% of the time transmitting, 5% receiving with speaker on, 90% waiting for incoming call.) Turn off the radio while charging.
Battery Capacity Maintenance
The T38 radio comes equipped with a rechargeable Li-Ion battery. This battery should be fully charged before initial use to ensure optimum capacity and performance. Battery life is determined by several factors. Among the more critical are the regular overcharge of batteries and the average depth of discharge with each cycle. Typically, the greater the overcharge and the deeper the average discharge, the fewer cycles a battery will last. For example, a battery which is overcharged and discharged 100% several times a day, lasts fewer cycles than a battery that receives less of an overcharge and is discharged to 50% per day. Further, a battery which receives minimal overcharging and averages only 25% discharge, lasts even longer.
Push-to-Talk Time-out Timer
To avoid air-wave traffic congestion, transmission ends after one minute even if the PTT button is still pressed. To reset the timer, release the PTT button briefly.
Note: Do not press the PTT button when others are talking. When more than one radio transmits on the same channel, the air-wave is jammed and all transmissions are lost.
Adjusting Speaker Volume
Channel and Frequencies
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