SFFR-6
User Manual
Configuration
Doc ID: ES1002-UM02-v204a
Copyright © 2014 Etherstack London Limited
Page 23 of 39
Field
Description
P25 Type
The P25 Type field indicates the level of filtering the GoBox will apply to a received signal before repeating
the signal.
P25ConventionalMonitor
All detected P25 signals will be repeated. A user specified NAC will be used
for transmission.
P25ConventionalNAC
The GoBox will unsquelch on a NAC code
P25ConventionalGroup
The GoBox will unsquelch on both a NAC code and a Talkgroup Id
NAC
The NAC is a feature similar to CTCSS or DCS for analogue radios. Repeaters can be programmed to only
repeat P25 signalling when receiving the correct NAC.
NACs are programmed as a three-hexadecimal-digit code that is transmitted along with the digital signal
being transmitted.
Three of the possible NACs have special functions
0
x293 ($293)
the default NAC
0xf7e ($F7E)
a repeater set for this NAC will repeat P25 signalling on any decoded signal
received
0xf7f ($F7F)
a repeater set for this NAC will allow all incoming decoded signals and the
repeater transmitter will retransmit the received NAC
Talkgroup (optional)
The GoBox may be configured to only repeat P25 signals matching a certain Talkgroup Id.
Allowed values are 1 to 65535 inclusive.
Once the form has been completed, press the
Save
button to save the profile or
Cancel
to abort the operation.
3.3.2 Adding a P25 Networked Repeating Profile
To create a new P25 Networked Profile, click the
P25 Networked
menu item in the navigation pane and click on
+ Add
Profile
button on the content pane.
The following fields will be required to be completed.
Field
Description
Profile Name
Create a unique profile name that will appear in the Status Window of the GoBox control interface. This
name is what your operational profile will be called.
The Profile Name is limited to 8 characters and may only include letters, numbers or a hyphen '-'.
Once save is pressed the profile is written to the GoBox.
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