Case 3: Received by the Selected RF Deck + received by the Unselected RF Deck (simultaneous
reception)
The audio received by the Selected RF Deck is emitted from Control Head 1, Control Head 2, and the external speaker
connected to the Selected RF Deck. Simultaneously, the audio received by the Unselected RF Deck is emitted only from
the external speaker connected to the Unselected RF Deck. Also, the LED of the Selected RF Deck lights green, and the
“BusyLED” icon appears alongside of the receiving Unselected RF Deck on the display of KCH-20R.
Ext.
SP
RF Deck 1
(Selected RF
Deck)
RF Deck 2
(Unselected
RF Deck)
Control Head
1
Control Head
2
Ext.
SP
KCH-20R
KCH-19
The received audio of the
Selected RF Deck
The received audio of the
Selected RF Deck
The received audio of the
Selected RF Deck
The received audio of the
Unselected RF Deck
Busy LED icon: Indicates
that Unselected RF Deck 2 is
receiving
LED lit green
(Selected RF Deck)
LED lit green
(Selected RF Deck)
Figure 16-31 Case 3: Received by the Selected RF Deck + received by the Unselected RF Deck (simultaneous
reception)
Transmitting
If operating in a Multi RF Deck system, only the Selected RF Deck transmits when the PTT is operated on a Control Head.
Similarly, if operating in a Dual Control Head structure, the PTT operations of both Control Heads are enabled. Also, if the
External PTT connected to a D-sub connector is operated, the connected RF Deck transmits individually.
The following are the transmission statuses assumed if the External PTT is connected to the D-sub connector of each RF
Deck in a Triple RF Deck/ Dual Control Head structure:
Case 1: Transmitting by the Mic PTT of a Control Head
If transmission operation is done by the Mic PTT of Control Head 1 or Control Head 2, only the Selected RF Deck transmits.
Also, the LED lights red.
KCH-20R
KCH-19
Mic
RF Deck 1
(Selected RF
Deck)
RF Deck 2
(Unselected
RF Deck)
Control Head
1
RF Deck 3
(Unselected
RF Deck)
Control Head
2
Mic
Pressing
the PTT
LED lit red
(Selected RF Deck)
LED lit red
(Selected RF Deck)
Figure 16-32 Case 1: Transmitting by the Mic PTT of a Control Head
16 MULTI RF DECK/ MULTI CONTROL HEAD
16.5 Basic Operations
Common FUNC (K, F)/Ver 2.20
268