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5-8 
Viking Portable 600 Radio Operating Manual
Conventional Mode Features
A function buttons can be programmed to the “Repeater Talkaround” function. With a 
button programmed as “Repeater Talkaround”, the user can press this button while on any 
conventional frequency, shifting the radio from operation through a repeater, to simplex 
operation on the repeater transmit frequency.
With a “Repeater Talkaround” button enabled, there is no restriction as to which channels 
the user can transmit (in simplex mode) on the repeater transmit frequency. A user can 
switch to talkaround mode on a busy dispatch channel, and his transmissions could 
prevent nearby users from hearing the repeater transmissions.
5.8
Displaying Transmit / Receive Frequency
If the Displayed Information option button or menu parameter is programmed (see Section 
4.2, "Option Keys / Buttons"), it 
can be used to display the channel frequency in 
megahertz. Pressing this button toggles between displaying the standard channel alias and 
the channel frequency. The receive frequency is displayed when receiving and the transmit 
frequency is displayed when transmitting. This feature is available on conventional 
channels only.
5.9
Emergency Alarm and Call
Emergency Alarms and Calls are separate functions that can be individually enabled or 
disabled on each analog and P25 conventional system. The Emergency option button or 
menu parameter is required for these functions. Emergency Alarms and Calls are 
transmitted on the global (radio wide) emergency zone/channel if one is programmed. If it 
is not programmed, the emergency is transmitted on the selected channel. The emergency 
programming of the system to which that channel is linked controls the emergency 
operation. Up to 255 Emergency Lists may be programmed. A specific list may be 
selected for each channel.
5.9.1 Emergency Alarms
An emergency alarm is a special transmission that alerts a dispatcher of an emergency 
situation. It is sent automatically by pressing the Emergency option button or selecting the 
Emergency menu parameter. The system to which the emergency channel is linked must 
have Emergency Alarms enabled.
Preliminary Draft 3/9/12