Vertex Standard VX-456 Specifications download pdf (Page 5)

VX-456 Operating Manual

Important InformatIon concernIng uHf cB radIo

Depending on how close your receiving radio is to

another transmitting radio, there can be interference

from the transmitting radio if it is using a channel

adjacent to the channel you are listening to.

Simply try going up or down a few channels from

the currently selected channel.

The above situations are not a fault of the radio but

a symptom of operating wideband and narrowband

radios in the same bandwidth.

This possible interference will decrease over time

as the population of wideband radios ages and de-

creases.

Further information and updates are available from

the Australian communications and media Author-

ity (ACMA) at www.acma.gov.au and the Ministry

of Economic Development (MED), radio spectrum

management at: www.rsm.govt.nz

Emergency Channels

The ACMA has allocated channels 5/35 for emer-

gency use only. Channel 5 is the primary simplex

Emergency channel. Where a channel 5 repeater is

available, you should select Duplex on CH 5.

Note: Channel 35 is the input channel for the chan-

nel 5 repeater therefore channel 35 should also not be

used for anything other than emergency transmissions.

Telemetry Channels

ACMA regulations have allocated channels 22 and

23 for telemetry only applications and have prohib-

ited the transmission of speech on these channels.

Consequently your radio has a transmit inhibit ap-

plied to channels 22 and 23.

In the event additional telemetry/telecommand chan-

nels are approved by the ACMA, these channels

shall be added to those currently listed where voice

transmission is inhibited. Currently transmissions on

channels 61, 62 and 63 are also inhibited and these

channels are reserved for future allocation.

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Vertex Standard VX-456 Specifications Page 5