Owner`s manual

UNIDEN UH8080NB UHF CB Transceiver

Operation - Special Features

SELCALL Settings

Tone Period

Tone period is the duration of one tone in a Selcall ID sequence. The setting of this

parameterdependsonthetypeofapplication.Onlongdistancecommunications,for

example: where the signal strength of the transmitted information is greatly reduced and

affectedbynoise,itisadvisabletousealongerTonePeriod.AlongTonePeriodgives

the decoder more time and information to check and evaluate the code.

NOTE

However,besurethatalltheradiosinyourgroupusethesameTone

Period setting. Otherwise you will not be able to selectively call one

another.

The UH8080NB allows you to select which Tone Period is best for you. The three most

commonlyusedtonesettings(40,70or100mSec)areavailable.Withthefreedomto

changethisparameter,youcaneasilyadapttotheexistingsysteminyourgroup

without the inconvenience of having the unit serviced by the dealer.

1. Power Off the UH8080NB.

2. Press and hold [POWER] and [MENU]. The SELCALL Settings Menu will display (no

tone will sound).

3. Press [MENU] repeatedly to select the Tone Period setting - which is indicated on the

display as Pd.

4. Press [SQL]toeditthesetting.Thecurrentsettingashes.

5. Press

/ toselectthedesiredtoneperiodfrom40ms,70msor100ms.

6. Press [SQL] to exit the setting.

7. Press and hold [ENTER],tosaveandexitprogrammingmode.

Lead-in Delay

Lead-in delay is a Selcall transmission parameter that ‘wakes-up’ and helps the receiver

oftheotherradiotolockontotheincomingsignal.EachtimeaSelcallIDistransmitted,

the Lead-in Delay attaches itself to the beginning of the code sequence and causes the

transmitter to be on for a longer period prior to the code transmission. This makes for a

stronger communication link between the transmitter and the other receiver.

One major advantage to having the longer Lead-in Delay is when selectively calling

another radio via a repeater station. A longer Lead-in Delay helps to stabilise both the

communication link from your radio to the repeater station and from the repeater station

to the other radio.