Basic Operation; Functions And Panel Layout - Kenwood TKR-750-850 Function Reference

1 BASIC OPERATION

1.1

Functions and Panel Layout

! Front Panel
Figure 1-1 Front Panel
Speaker
The speaker emits the received audio signals and
alert tones.
Channel/Status display
Two 7-segment LEDs can display channel numbers,
name and the status.
Volume Knob
The volume increases while turning the volume knob
clockwise and decreases while turning it
counterclockwise.
Power switch
Press this switch to turn ON and press it again to turn
OFF.
POWER LED
The LED lights green while using with main power
(DC) or lights red while using with the backup power.
Microphone connector (8-pin connector)
You can connect a microphone with this connector.
(Refer to Table 1-1 Assigning signals to the 8-pin
connector.)
BUSY LED
This LED lights green while receiving signal.
TX LED
This LED lights red while transmitting.
PF key (Programmable Function key)
Press a PF (Programmable Function) key to activate
the assigned function. A key LED lights orange while
the assigned function is activated.
Table 1-1 Assigning signals to the 8-pin connector
Pin number Pin name
1 NC
2 SB
3 GND
Version: 1.01 USA
Description
No connection
Switched + B output:
10.8 - 15.6 V/ 0.2 A max.
Ground
Function Reference (FUNC)
Pin number Pin name
4 PTT/TXD1
5 MIG
6 MIC
7 HOOK/RXD1
8 NC
! Rear Panel
Figure 1-2 Rear panel
Antenna jack for transmission
This jack allows you to connect the transmission
antenna, duplexer or RF amplifier.
Control Interface jack (25-pin connector)
This jack allows you to connect an external device or
controller. (Refer to Table 1-2 Assigning signals to 25-
pin connector.)
Fuse
You can attach a 10 A fuse.
Antenna jack for reception
This jack allows you to connect the reception antenna,
duplexer or Pre-selector.
Power connector
This connector allows you to connect a power cable.
With this code, DC 13.6 V (K-type) power are supplied
into TKR-750/850/751/851.
Backup Battery terminal
This terminal allows you to connect the backup
battery.
TEST/SPKR jack (15-pin connector)
This jack allows you to connect an external speaker.
You can use this jack for making input/output tests.
Also some signals arrive on these connector.
to Table 1-3 Assigning signals to the 15-pin
connector.)
Description
PTT signal input./
PC serial data from TKR-750/
850/751/851. PC read, PC
tuning, Firmware programming
-
-
HOOK signal input. /
PC serial data to TKR-750/850/
751/851. PC write, PC tuning,
Firmware programming
No connection
(Refer
1