BK Radio KNG Series, Руководство по обслуживанию

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BK Radio Page 2-11
operation and Programming
editing a Command Zone [CHan-]
When operating in a Command Zone, press the “CHAN-” button to remove the selected channel
from the zone.
When a channel is deleted, the display momentarily shows “Channel Deleted”, and the following
channels move up in the list. For example, if channel 5 is deleted, channel 6 becomes the new
channel 5, channel 7 becomes the new channel 6, etc.
NOTE: Modifications to a command zone channel, such as User Selected Tones, do not affect the
original standard zone channel.
CoDe GUarD anD networK aCCess CoDes
Conventional Channels
Code Guard receive
Analog channels programmed with a receive code guard will be heard only when the proper carrier
frequency and Code Guard value is received. Analog and mixed mode receive channels will also
unmute when the radio is in monitor mode.
Code Guard transmit
Whenever transmitting on an analog channel, any programmed sub-audible Code Guard is
transmitted. Depending on radio programming, the Code Guard can be the default tone assigned to
the channel or a tone selected from the Code Guard Picklist (see Pick List Options).
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SCAN PRI
VOL
Busy Channel/Transmit
Indicator
The frequency must be clear prior to transmitting on a Code Guarded
channel. If the LED Indicator is yellow do not transmit. Busy Channel
Lockout can be programmed to disallow transmitting while a channel is
busy.
1. Press the PTT switch. When the transmitter is on, the LED Indicator
glows red and TX appears in the display.
2 Talk in a normal voice with the microphone one to two inches from your
mouth.
3. Release the PTT switch to stop transmitting.
analog squelch Control
Sub-audible signaling (CTCSS/CDCSS) is used to allow a group of radios to be selectively called
in an analog system. Programming the receive code guard equal to zero allows for Carrier Squelch
operation, where the radio will unmute whenever a carrier is detected regardless of the transmitted
Code Guard.
aPCo Project 25 Digital squelch Control
Network Access Codes (NACs) provide the digital equivalent of analog sub-audible signaling
(CTCSS/CDCSS) allowing a group of radios to be selectively called within a system.
Users in the same area (using the same NAC) can be further divided into Talk Groups, with each
group having its own Talk Group ID (TGID). Group Calls are made by designating both the users’
NAC and TGID.
Each radio also has an individual P25 unit ID. A Unit-to-Unit call contains the addressee’s NAC, and
uses the addressee’s P25 unit ID instead of the TGID.
When operating in Digital Mode, each channel can be programmed to use either Normal squelch or
Selective squelch.
Normal squelch is used to mimic analog operation. Signals are only qualified with the programmed
NAC. TGIDs and P25 Unit IDs are ignored. Each digital channel is programmed with a receive NAC
and a transmit NAC. When an incoming signal’s NAC matches the channel’s programmed receive
NAC, the radio unmutes. The default NAC is 0659 ($293 hex).