jotron RA-7203 User Manual

RA - 7203

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1 DISPLAY
2 FbA (Function button A)
3 RS (Rotary switch)
4 SQUELCH LED
5 REMOTE LED
6 FRONT CONNECTOR
7 FbB (Function button B)
8 FbC (Function button C)
9 ON/OFF
10 ALARM LED
11 STANDBY LED
12 LOUDSPEAKER

VHF Receiver

RA - 7203

Front RJ45 connector

Front Connector, RJ45

Name PIN Purpose

SEL 1
TDO 2

Headset 3
RS232 4 RS232 Tx

RS232 5 RS232 Rx
TMS 6
+12VDC 7 +12 VDC to external equipment (10mA)
GND 8 Common ground

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Technical data, 1 of 4

Standards; ICAO annex 10, EN300 676(AM, AM-MSK),

EN301 841(VDL2 – Physical layer)

Environmental: Temperature range -20°C to +55°C (operating) -

40°C to +70°C (storage) Humidity 90% @+40°C
(non condensing)

Shock Transport: IEC-721-3-2, Class 2M3
Vibration Transport: IEC-68-2-32, Class 2M3. IEC-68-2-6

EMC EN 301 489 – part 22

Weight: 1.7 kg

Dimension: 71mm (14TE)(W) * 230mm(D) * 128mm (H)

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Frequency response: 300-3400 Hz 350-2500 Hz
Data ports: RS232, RS485, 100/10BaseT
Protocol: (SNMP v.2) Simple Network Management

RS232/RS485 Jotron proprietary

BITE monitoring: VSWR, Voltages, Currents, Levels, Lock

detect, Temperature, Output power, Reflected
power, a.o.

Supply voltage: AC 115/230VAC +15/-10% / 50-60Hz Supply

voltage, DC 21.6 - 31.2VDC negative ground

MTBF: >10 years / unit
MTTR: <30 minutes at lowest replaceable unit

Technical data, 2 of 4

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Technical data, 3 of 4

Receiver AM 25kHz AM 8.33kHz

Sensitivity analogue @1μV / 30% pd: 10dSINAD(CCITT)
Adjacent channel rejection: >70dB >60dB
Intermodulation (3 signal): >70 dBc
IF bandwidth: +/- 11kHz +/-2.8kHz
Image and IF frequency response: >110 dB
Squelch operation: Adjustable 107dBm, 30dB

S/N + carrier override
Activation time <20ms
Hysteresis <3dB

Audio AGC: 30%-90%, <1dB variation
Noise blanker: IF: Selectable ON/OFF
Signal / Noise: >45dB on any output @100μV,

30%

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Technical data, 4 of 4

AGC range: -107dBm to +5dBm
AGC attach time: <50ms
AGC decay time: <200ms
Inband squelch signal: Configurable tones: 150-3400Hz
Line output: 600Ω, -36 - +7dBm @90%

modulation

Harmonic distortion: <3% @90% AM (line output)
Crossmodulation: >85dB @ 100 kHz frequency offset
Blocking: >100dB @1MHz offset, >110 dB out

of band signals

Dynamic range: >110dB
Spurious response rejection: >90dB

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Menus, 1 of 16

FbA

RS

FbB

FbC

NOTE!
RS can be pressed and turned.

The radio is controlled through an advanced menu system.
The access for each menu is restricted by a user parameter.
The System Operator can change all user parameters from SNMP, or
from the menu using a hardware key.

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Menus, 2 of 16

User
parameter:

Name of menu: Access and restrictions:

1 System operator Full access to all parameters

(R/W by System Operator)

2 Technician Access to some settings in RX

menu system + bite (R/O)

3 Operators Access only to Volume,

Frequency and memory store
and recall

4 Restricted Restricted to Volume, Squelch

and memory recall

There are four access user levels:

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Menus, 3 of 16

Push RS to switch in the operator menu

When operated locally, the operator has full access to all facilities
using the various controls at the front panel.

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Menus, 4 of 16

Push menu button to enter MAIN MENU

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Menus, 5 of 16

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Menus, 6 of 16

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Menus, 7 of 16

RX config subtree menu, 1 of 2

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Menus, 8 of 16

RX config subtree menu, 2 of 2

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Menus, 9 of 16

Interface config subtree menu, 1 of 2

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Menus, 10 of 16

Interface config subtree menu, 2 of 2

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Menus, 11 of 16

Bite system subtree, 1 of 2

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Menus, 12 of 16

Bite system subtree, 2 of 2

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Menus, 13 of 16

To maneuver in the menu systems, use the up-button FbA,
the down-button FbB or (preferably) turn the RS.

The different submenus are selected by pressing the rotary
switch and turning up/down until the desired menu is
reached. (FbA, FbB and FbC may be used as well)

To return to previous menu, press RS (or FbC) when “ ,,,” is
selected in the present menu.

The RA-7203 will enter the Operator menu when turned
“ON”.

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Menus, 14 of 16

Operator menu, 1 of 3

PressRS

Press RS

Press RS

Normal operating display with active
squelch. Press Fb C to mute squelch.

Normal operating display with no channels
stored. Press Fb C to recall stored channels.

Set loudspeaker volume by turning RS.
Press FbC to mute loudspeaker.

Set headset volume by turning RS.
Press FbC to mute headset.

Press RS

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Menus, 15 of 16

Operator menu, 2 of 3

Press RS

Press RS

Press RS

Set squelch level by turning RS.
Press FbC to mute squelsh.

See next page how to select frequency.

Press FbC to store new frequency on specified
channel. Select storing channel by turning RS.

Select brightness level by turning RS.

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Menus, 16 of 16

Operator menu, 3 of 3

Press FbA

Press FbA

Press FbC

Select 8,33kHz steps by turning RS. For no changes
press FbC.

Select 100kHz steps by turning RS.

Select 1MHz steps by turning RS.

Press FbC to store new frequency and return.

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Rear RJ45 connectors, 1 of 5

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1 ANTENNA CONNECTOR
2 EARTH TAG
3 DC INPUT CONNECTOR
4 AC INPUT CONNECTOR
5 LAN CONNECTOR
6 AUX 1 CONNECTOR
7 AUX 2 CONNECTOR
8 REMOTE CONNECTOR

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LAN interface connector

Name PIN Purpose

LAN_TXP 1 Tx data
LAN_TXN 2 Tx data
LAN_RXP 3 Rx data
LAN_D3P 4 Optional
LAN_D3N 5 Optional
LAN_RXN 6 Rx data
LAN_D4P 7 Optional
LAN_D4N 8 Optional

Rear RJ45 connectors, 2 of 5

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Aux 1 connector

Name PIN Purpose

ALARM_P 1 Alarm out – rele
ALARM_N 2 Alarm out – rele
Select_in_P 3 Select in – opto isolated
RS232_S 4 RS232 Send data
RS232_R 5 RS232 Receive data
Select_in_N 6 Select in – opto isolated
+12V 7 12V output to ext

equipment (D/O: 200mA)

GND 8 Common ground

Rear RJ45 connectors, 3 of 5

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AUX 2 connector

Name PIN Purpose

Squelch_out_P 1 Squelch out - opto isolated
Squelch_out_N 2 Differential – opto isolated

AGC_HILO_P 3 Hi / Lo depending on input signal

(configurable)
NC 4
NC 5
AGC_HILO_N 6 Differential – opto isolated

AGC_ OUT 7
NC 8

Rear RJ45 connectors, 4 of 5

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REM connector (Interface to transmitter)

Name PIN Purpose

RS485_Z 1 RS485 (- )
RS485_Y 2 RS485(+)
LINE_P 3 Diff. line output from RX, 600 ohm
TX_BUSY 4 TX Busy indicator input (Mute input)
RX_BUSY 5 RX Busy indicator output (Repeater Key

Output – Tx in repeater mode)
LINE_N 6 Diff. line output from RX, 600 ohm
ALARM 7 Low=Alarm

(Note: I/O – low input will also be recognized

as an alarm (EXT))
GND 8 Common ground

Rear RJ45 connectors, 5 of 5

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External wiring

RJ45 KRONE