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Safety at UA

How to operate a portable radio

There are two styles of portable radios currently in use on the campus. Both of these radios are made by Kenwood Communications Corporation. The two models are: TK-431 and TK-481. They are distinguished by the placement of the display screen. The TK-431 has the display screen on the top of the radio, while the TK-481 has the display screen on the front directly below the speaker.

TK-431tk431

To operate the TK-431, you must turn on the radio using the button on the top that is directly to the left and below the antennae. The display screen should show a talkgroup name.

Transmitting and Receiving
To transmit, you must push the large "push to talk" (PTT) button on the side of the radio and wait for a short "beep" to sound from the speaker. You may then talk after this beep. To listen, release the "PTT" Button.

Buttons
The two small buttons on the side of the radio directly above and below the "PTT" button are for volume adjustment. To adjust the volume up, press the upper button. To adjust the volume down, press the lower button. The "lamp" button on the top of the radio will momentarily turn on the light in the display screen. The "A" button will always take you back to the "home" or main talkgroup that is assigned to your particular radio. The "SYS" button changes between systems (e.g., Police, Safety, Parking, PFOC, etc.). The "GRP" button changes between talkgroups within a system (e.g., PFOC system has talkgroups of PFOC Dispatch, Electricians, Plumbers, HVAC, etc.). The "S" button is normally not used but, in some radios, this button will allow for scanning of multiple talkgroups.

Battery Charging
The battery can either be on or off the radio. To remove the battery, push up on the battery release lever on the PTT side of the radio directly above the abattery. Slide the battery away from the release lever until it is fully off of the radio. Insert the battery into the charger with the battery charging contacts facing the rear of the charger. Make sure that the battery "snaps" into place in the charger. The green light that corresponds with the charging slot should turn to "orange." This is a trickle charge that should charge up a battery to full capacity in approximately 12-14 hours. The "orange" light WILL NOT TURN OFF when the battery is fully charged. Removal of the battery is recommended as soon as possible after the charging time period.

If there is a need to rapid charge the battery, once the battery is inserted into the charger, press the "start" button on the charger that corresponds with the charging slot. The green light will turn to "red." Once the battery is fully charged, the "red" light will turn back to "green" to show it is complete. This should take place within 2-3 hours.

TK-481

tk481To operate the TK-481, you must turn on the radio by turning the volume knob on the top right of the unit. The display screen should show a talkgroup name. Volume adjustment is made by turning this knob higher or lower.

Transmitting and Receiving
To transmit, you must push the large "push to talk" (PTT) button on the side of the radio and wait for a short "beep" to sound from the speaker. You may then talk after this beep. To listen, release the "PTT" button.

Buttons
The button directly above the PTT is the "home" button. This will always take you back to the home or main talkgroup that is assigned to your particular radio. The button located below the PTT is the "lamp" button. This will momentarily light up the display screen. The "S" button on the front of the radio is normally not used although, in some radios, it is used for scanning multiple talkgroups. The "A" button on the front of the radio is also normally not used, although in the radios that have scan activated, this button is used for delete and add within the scan list. The "B" and "C" buttons are used to change systems (e.g., Police, Safety, Parking, PFOC, etc.). The knob on the top of the radio located between the antennae and the volume knob is used to change the talkgroups within a particular system (e.g., PFOC system has talkgroups of PFOC, Dispatch, Electricians, Plumbers, HVAT, etc.). The orange button located on the top of the radio is used to "lock" the buttons so that they cannot accidentally be changed. The only functions that will work when the radio is locked is the PTT, On/Off, volume, and lamp.

Battery Charging
The battery can either be on or off the radio. To remove the battery, push down on the battery release lever located on the bottom of the radio. Slide the battery toward the bottom of the radio until it unlocks and stops. Lift up on the battery to remove. Insert the battery into the charger with the battery charging contacts facing the rear of the charger. Make sure that the battery "snaps" into place in the charger. The light on the top front of the charger will turn to "red." This charger will automatically rapid charge the battery. It will take anywhere from 1-3 hours. When the battery is fully charged, the light will turn to "green." Removal of the battery is recommended once this is done.

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