Velleman ALN006 Manual de usuario descargar pdf (Pagina 15)

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call. To communicate in condential mode, enable the scrambler

O 6.5.

2If you need to use the HP450 2A radio next to electric equipment

that generates impulses that frequently enable the squelch of

the radio (that is the radio cannot be permanently silenced when

there are signals and noise can be occasionally perceived), it is

generally preferable to use the restricted trafc mode.

5.9 Programming the CTCSS/DCS codes

It is possible to change the CTCSS tones or DCS codes on all the

channels. You can set different codes in TX and RX.

5.9.a Selecting the CTCSS tones

1) Select the operating channel.

2) Press MENU twice. CTC displays on the left along with the

ashingvaluethathasbeensetontheright:oF (disabled) or a

number ranging from 1 to 38 (CTCSS tone), depending on the

channel in use.

3) Press p or q to select the CTCSS tone in RX.

4) Press PTTtostorethetone(orwaitveseconds).

5) Press MENU three times. The led blinks red.

6) Press p or q to select the desired CTCSS tone in TX. Push PTT

to store the tone (or wait 5 seconds)

5.9.b Selecting the DCS codes

1) Select the operating channel.

2) Press MENU three times. DCS displays on the left along with the

ashingvaluethathasbeensetontheright:oF (disabled) or a

number ranging from 1 to 83, depending on the DCS code used.

3) Press p or q to select the DCS setting in RX.

4) Press PTTorwaitvesecondstostoretheDCS code.

5) Push MENU three times. The led blinks red.

6) Push p/qto select the DCS code in TX.Push PTT to store the

DCS code in TX.

5.9.c LED operation with CTCSS/DCS

Whenyouusetherestrictedtrafcmode,thestatusLEDprovides

slightlydifferentindicationsascomparedtothoseoftheopentrafc

mode:

• Off: indicates that no signal is being received (as in the open

trafcmode)

• Green: indicates that a signal with a correct CTCSS/DCS tone is

being received (it is enabled together with the radio volume)

• Orange: indicates the receipt of a signal without a CTCSS/DCS

tone or with a different CTCSS/DCS tone (the volume will not be

enabled)

• Red: indicates that the transmission is in progress (as in the open

trafcmode)

5.10 Monitoring function - Monitor/squelch

This feature can be used to monitor the selected channel before

transmitting and receiving low intensity signals. Press MON to

disable the mode (CTCSS).

To disable the squelch (noise reduction), hold MON down for

approximately 3 seconds. In this mode, you can hear all the noise

present in the environment.

2The disabling of the squelch increases the consumption of the

battery power.

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Velleman ALN006 Manual de usuario Pagina 15

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