Operation example 2
This is the example of the operation if
Mobile Relay Station
is used via a repeater with the UHF transceiver as the
transmitting unit and the VHF transceiver as the receiving unit in a P25 Conventional system.
The channel configurations of RF Deck 1 and RF Deck 2 are as follows:
Table 16-17 Mobile Relay Channel
RF Deck
Unit ID
Talkgroup ID
Receive
Frequency
Transmit
Frequency
NAC Decode NAC Encode
RF Deck 1
1
1
470.5 MHz
465.5 MHz
29E
29A
RF Deck 2
2
2
144.5 MHz
145.5 MHz
29B
29C
RF Deck 1
UHF
VHF
KRK-15B
Control
Head 1
KRK-15B
RF Deck 2
Subscriber Unit A
(UHF)
Subscriber Unit B
(VHF)
Unit ID = A
Talkgroup ID = B
RX Frequency = 470.5 MHz
TX Frequency = 465.5 MHz
NAC Dec = 29E
NAC Enc = 29A
RX Frequency = 465.5 MHz
TX Frequency = 470.5 MHz
NAC Dec = 29A
NAC Enc = 29E
Unit ID = B
Talkgroup ID = B
RX Frequency = 145.5 MHz
TX Frequency = 144.5 MHz
NAC Dec = 29C
NAC Enc = 29B
Repeater
Source Unit ID = B
Talkgroup ID = B (Unit ID = B)
TX Freq = 470.5 MHz (Repeater)
NAC Enc = 29E (Repeater)
Source Unit ID = B
Talkgroup ID = B (Unit ID = B)
TX Freq = 465.5 MHz (RF Deck 1)
NAC Enc = 29A (RF Deck 1)
Source Unit ID = A
Talkgroup ID = B (Unit ID = A)
TX Freq = 470.5 MHz (Repeater)
NAC Enc = 29E (Repeater)
Source Unit ID = A
Talkgroup ID = B (Unit ID = A)
TX Freq = 145.5 MHz (RF Deck 2)
NAC Enc = 29C (RF Deck 2)
Figure 16-82 Mobile Relay Station (Operation Example 2)
Note
0
Mobile Relay Station
does not function if the received signaling does not match the signaling preconfigured for the
receiving RF Deck.
0
QT/DQT is decoded regardless of the status of
Off-hook Decode
and microphone hook.
0
Time-out Timer
executes according to the configuration.
16 MULTI RF DECK/ MULTI CONTROL HEAD
16.18 Relaying the Received Signal (Mobile Relay Station)
Common FUNC (K, F)/Ver 2.20
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