Technical information

ManualsBrandsRitron ManualsGadgetsPatriot SST D-Series SST-454D

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CONTROL & OPERATION

1 ANTENNA

The flexible antenna radiates and receives radio

signals. Screw the antenna base all the way into

the threaded bushing on top of the radio.

NOTE: Use only the type of antenna furnished

with the radio.

2 ON/ VOLUME UP

To switch the unit On, press the On/ Volume Up

button; the speaker will emit a turn on beep. If the

radio turns on to the Scan Channel it will emit the

Resume Scan Beep. Once the radio is On, press

this button to increase volume.

3 VOLUME DOWN/ OFF

Press the Volume Down/ Off button to decrease

volume. To switch Off the unit, press and hold this

button until the speaker emits a double beep.

4 PUSH-TO-TALK SWITCH (PTT)

Press and hold the PTT when transmitting;

release it to receive.

5 CHANNEL SELECTOR

Press the button and the radio will advance the

channel, and the channel display will show the

new operating channel. When the Scan Channel

is selected the radio will emit the Resume Scan

Beep and the radio will begin scanning.

6 BATTERY ACCESS DOOR

(CASE BOTTOM)

The battery access door may be removed to

access the battery pack. Refer to Battery Access

& Installation, FIG-2, page 6.

7 JACK COVER

This rubber cover seals out dust and moisture,

etc. Snap the cover into the audio accessory jack

and charge jack openings when the jacks are not

in use.

8 AUDIO ACCESSORY JACK

The audio accessory jack is used to plug in

earphone options, and, in conjunction with the

charge jack, to connect an optional remote

speaker/ microphone or a single- or dual-ear

headset. This jack is also used for PC

programming.

9 CHARGE JACK

The battery pack may be charged through this

jack using the RITRON charger cube. Refer to

Accessories, page ii, for additional charging

options.

10 CHANNEL DISPLAY

The channel display will indicate the current

operating channel. When the Scan Channel is

selected the display will rapidly flash the channels

being scanned, and will stop when a channel is

received.

11 TX/BUSY INDICATOR LAMP

The LED flashes GREEN when the radio is

receiving, and glows RED when it is transmitting.

12 SPEAKER

The speaker, located behind the front grille, allows

you to hear calls on your channel.

13 MICROPHONE

The microphone allows your voice to be heard in

transmissions to other radios. Speak in a normal

tone; shouting does not improve your listener's

reception.

14 DROP-IN CHARGING CAPABILITY

Two contacts, in the bottom of the radio, permit

charging the battery pack with an optional drop-in

charger. Refer to Optional Charging Accessories,

page 6.

IMPORTANT: CHARGE THE BATTERY PACK before using the radio for the first time.

Refer to Batteries, pages 5 and 6.

FIG-1: RADIO CONTROLS & CONNECTORS

ON-OFF / VOLUME ADJUST

To switch on the radio - press the On/Volume Up

button. The radio will emit the Channel beep. If

the radio turns on to the Scan Channel it will emit

the Scan Beep. The radio will turn on to the

channel that was selected when it was last turned

off, or can be programmed to always turn on to

channel 1.

To adjust the volume - press the volume up or the

volume down button until you reach the desired

level. You should hear noise or any broadcasts on

the channel. On Trunked radio channels you will

hear a tone when adjusting the volume.

To turn off the radio - press and hold the Off/

Volume Down button until a two tone "turn-off"

beep is heard. For instant turn-off, press the PTT

button while holding the Off/Volume Down button.

CHANNEL SELECTION

To change channels - press and release the

Channel Selector button. The radio will emit a

short Channel beep, increment the channel, and

the Channel Display will show the new operating

channel. If the highest channel number is

selected and you press the Channel Selector

button, the radio resets to channel 1 and the

Channel beep is heard on the speaker.

If the Scan Channel is selected - the radio will

emit the Scan Beep and the Channel Display will

rapidly flash the channel numbers as they are

scanned. If a signal is received the channel

display will indicate the channel number, and

when the received signal is removed the radio will

wait briefly, sound the Scan Beep, then scanning

will resume as normal.

RECEIVE

To hear calls from other users - adjust the

volume as desired. The radio can receive

broadcasts while the Push-To-Talk button is not

being pressed. Whether or not you hear these

broadcasts depends upon the squelch settings.

There are three squelch modes that can be

used in the SST-454D portable on a

conventional 2-way channel.

 Carrier squelch lets you hear all

broadcasts on your channel strong enough

for the radio to detect, and silences noise.

 Tone squelch uses one of the QC or DQC

tone squelch formats available on the

SST-454D. This allows you to screen out

on-channel broadcasts that do not carry

the correct code programmed for the radio.

 No squelch disables all squelch operation

and allows you to hear even the weakest

broadcasts on your channel.

CONVENTIONAL OPERATION

Once a squelch type has been selected by the

user, all channels will operate in that mode.

The SST-454D radio will operate in tone

squelch mode when it is 1st turned on.

To monitor the channel - press one of the

volume control buttons. When you press the

volume up or the volume down button, squelch

turns off and all radio traffic on the channel (or

noise) sounds in the speaker.

To activate carrier squelch - simultaneously

press both of the volume buttons and hold

briefly before releasing. When carrier squelch

is on, the radio emits a double beep. The

radio will now let you hear all broadcasts on

your channel.

To activate tone squelch - simultaneously press

both of the volume buttons and hold briefly

before releasing. When tone squelch is turned

on, the handheld sounds one beep. You will

only hear broadcasts that carry the same QC or

DQC code programmed into your radio.

To activate no squelch - simultaneously press

both of the volume buttons and continue to hold

them down. About 3 seconds after the beep (or

double beep), the radio will start beeping

repeatedly. This means that squelch is turned

off. Release the buttons. To restore squelch,

press and hold both of the volume buttons until

the radio sounds a beep or double beep.

If you are unable to activate carrier or no

squelch the radio has been optionally

programming for Monitor Lockout. See your

Ritron dealer or contact Ritron directly to disable

this option.

Note: It is possible that the beginning of a call

might be missed while the radio is in battery

saver mode. If this happens, ask the caller to

repeat the message.

TRANSMIT

Normally, you should not transmit until no one is

talking on the channel. Check the Busy/TX

Indicator Lamp before transmitting to confirm

the channel is clear. Do not transmit when the

indicator flashes GREEN, showing the channel

is busy. When the indicator lamp stops flashing

GREEN, the channel is open.

To transmit - hold down the Push-To-Talk button

and with the radio four inches away talk into the

microphone. Speak in a normal tone, since

talking louder will not improve the listeners

reception.

Keep talk times as short and infrequent as

possible to conserve battery, minimize radio

frequency exposure, and allow others to use the

channel.

OFF/HOLD

VOLUME