Uniden UH850S Owner's Manual

Also see for UH835S: Manual Owner's manual

Uniden UH850S Owner's Manual Manual pdf 30 page image

30UHF-CB Channel GuidelinesAlwaysNOTElisten on a channel (or observe the receive signal levelmeter) to ensure it is not already being used before transmitting.Channels 5 and 35 are used for emergency channels.CTCSS, DCS will not operate on these channels.Please follow these guidelines for channel use in Australia:• Channels 05 and 35 are Emergency Channels.• Channel 11 is a Calling Channel.• Channels 22 and 23 are for telemetry and telecommandapplications, channels 61, 62 and 63 are for future use and TX isinhibited on these channels.General communication is accepted on all other channelswith these guidelines:• Channel 40 - road channel (Australia).• Channels 01-08 (and 31-38), and Channels 41-48(and 71-78) are repeater channels.NOTEImportant information - 80 Channel UHF-CB channel expansionTo provide all users additional channel capacity within the UHF-CBBand the ACMA introduced narrowband channel use. This allows foradditional channels to be added, up to 80 Channels.This simply means that the new narrowband radio you have purchasedwill have more channels than older radios. Please refer to theguidelines above and the channel chart for further channel information.A list of currently authorised channels can also be obtained from theACMA website in Australia and the MBIE website in New Zealand.Interference / Poor AudioWhen a new narrowband radio receives a signal from an olderwideband radio the speech may sound loud, however the radio’sbuilt-in AVS (Automatic Volume Stablizer) circuit will detect andmanage incoming audio to comparable levels.Narrowband radios operating on CH41 - CH80 may encounterinterference from nearby wideband radios transmitting on high poweron an adjacent channel (frequency).When an older wideband radio receives a signal from a newnarrowband radio the speech may sound quiet - the wideband radiouser simply adjusts their radio volume for best performance.The above situations are not a fault of the radio but a symptom ofmixed wideband and narrowband radios in current use. It is expectedthat as older wideband radios are phased out this issue will beeliminated.UNIDEN UH835S/UH850S Handheld UHF-CB Transceiver