JANA INTERNATIONAL LTD
SPLIT POINT VOICE ENCRYPTION UNIT
A130-STD v1
INSTALLATION NOTES FOR GP300 RADIO
COPYRIGHT 2006 JANA INTERNATIONAL LTD ALL RIGHTS RESERVED
A130-STD v1
JANA International Ltd
4, Benson Road,
Poole, Dorset.
BH17 0GB /UK
Tel: +44 (0)1202 673636
Fax: +44 (0)1202 675701
E-mail: sales@janainternational.com
Website: http://www.janainternational.com
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A130-STD INSTALLATION NOTES
Contents:
1. Introduction
2. Features
3. Typical Specifications
4. Operation
5. Reference Documents
6. A130-STD Pin Connections
7. Equipment Required
8. Installation
8.1 Important Notes
8.2 Disassembly
8.3 A130-STD Installation Instructions
8.4 Mounting the Encryption Board
9. Jana Installation Test
10. A130-STD PCB Layout (Fig 5)
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A130-STD INSTALLATION NOTES
1. INTRODUCTION
The standard A130 voice encryption board gives split band frequency inversion voice encryption. It is
optimised for simple retro-fitting into many different types of mobile and hand held radios. The A130
encryption board is designed to give a medium level of security.
Scrambling is performed by splitting the input signal frequency band into upper and lower
frequencies. This is achieved by using complex analogue signal processing techniques, where each
band is 'Frequency inverted' by modulating with a programmed carrier frequency. These bands are
then summed into the output. This board uses separate Rx and Tx paths which are switched for half
duplex operation.
A total of 32 different carrier split-point frequencies are programmable using an RS232 software
interface box. Programming of the board is usually default factory programmed, however an interface
programmer box can be obtained upon request.
2. FEATURES
32 Programmable fixed split-band carrier frequencies for voice inversion scrambler
High quality recovered audio
Bleep tones in Clear Mode configurable for both Rx and Tx
Optional DTMF tone generation.
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A130-STD INSTALLATION NOTES
3. TYPICAL SPECIFICATIONS
Note: These characteristics can be changed on request. All characteristics are measured using the
following parameters unless otherwise specified: Audio level ref. 0dB = 775m Vrms Vdd = +5v
Min
Typ
Max
Units
Vcc Operating voltage (+5v supply)
4.5
5
5.5
Volts
Vdd Operating voltage
Operating current
7.0
7.5
15
12
Volts
mA
DC Values :
Static Values :
Rx Input impedance
100
Tx Input impedance
10
Rx Output impedance
Tx Output impedance
K
33
24
Digital input and output level ‘1’
Digital input and output level ‘0’
K
K
K
Volts
5
0
0.6
1.5
Volts
+6
-55
dB
dB
0
dB
Lower -3dB cut-off (Tx or Rx)
300
Hz
Upper -3dB cut-off (Tx or Rx)
3,400
Hz
Received Signal Passband Gain
Received signal lower -3dB cut-off
0
400
dB
Hz
Received signal upper -3dB cut-off
2,700
Hz
Transmitted signal lower -3dB cut-off
Transmitted signal upper -3dB cut-off
300
3,400
Hz
Hz
Dynamic Values :
Analogue input level
Carrier breakdown
-18
Passband Characteristics :
Clear mode
Passband Gain
Secure mode
All measurements have been obtained to give as accurate record of product operating parameters.
Jana International Ltd reserves the right to change this specification without any notice.
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A130-STD INSTALLATION NOTES
4. OPERATION
Installation of the encryption unit in the radio does not change the normal operation of the radio.
Switching between Secure and Clear mode is toggled by an external press button located as the top
button on the left hand side of the radio. The radio starts up in default secure mode. To indicate the
radio is in Clear Mode, a bleep sound will occur on an interval of every 3 seconds. This is default
programmed for both Rx and Tx clear mode.
Note, for configurations where bleep tones are generated in Tx clear mode, bleeps are only sent to
the local audio speaker of the radio transmitting and is not transmitted over the air.
Programmable Options:
Startup in Secure/Clear (Default: Secure)
Bleep Enable/Disable (Default Enable)
Bleep on Rx Only/Rx & Tx mode (Default Rx & Tx)
Secure button Switch/Toggle (Default: Toggle)
PTT button Switch/Toggle (Default: Switch)
Programmable Fixed Split-point Carrier frequency
Note: These options are factory default programmed, however upon customer purchase of
programmer box, the above options can be changed.
5. REFERENCE DOCUMENTS
GP300 Technical manual
6. A130-STD PIN CONNECTIONS
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Colours
Blue
Yellow
Orange
White
Grey
Violet
Blue
Yellow
Red
White
Grey
Purple
Blue
Yellow
Red
Pin Function
TX in
+Vcc (+5v)
PTT
Clear/Code
Mute_Decode
RX in
Tx Out
Rx Out
LED Out (LED Anode)
Gnd
Vdd (+5v to 15v)
Program enable
S_CLK
S_DA
S_PWR
Comments
Audio
PA Bleep control
Audio
Audio
Audio
Code/Clear Status
Not used (AUX)
Reserved
Reserved
Reserved
Reserved
Note: For standard installation into the GP300 use Loom Wires 1,2,3,4,5,6,7,8,10
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A130-STD INSTALLATION NOTES
7. EQUIPMENT REQUIRED











Tools as specified in the Motorola GP300 Service Manual.
Thin Blade Screwdriver
Small Wire Cutters
Small Tweezers
De-Soldering Equipment
(suitable for use with conventional and surface mount components)
Soldering Iron
Solder (60/40 Tin Lead 22 SWG)
A 15 way Slimline Connector with Fine Insulated Wire pre-fitted to it.
Double Sided Sticky tape
A130-GP3 Unit
Test Equipment as specified in the Motorola GP300 Technical Manual.
8. INSTALLATION
8.1 Important Notes

ANTI-STATIC HANDLING PRECAUTIONS MUST BE OBSERVED AT ALL TIMES.

CHECK THE CORRECT OPERATION OF THE RADIO BEFORE ATTEMPTING TO
DISMANTLE THE RADIO – REFER TO MANUAL.

RE-CHECK THE RADIO'S PERFORMANCE ON COMPLETION OF THE INSTALLATION
(SEE JANA TEST SPEC)
8.2 Disassembly
To disassemble the RADIO follow the instructions set out in the Technical Manual.
8.3 A130-STD Installation Instructions
Remove the top cover from the radio.
Remove the following components:
Remove the radio PCB from the main radio chassis. Located at the bottom of the PCB are two
resistors R455 and R506. Remove these two resistors as shown in Fig 1.
Note: The installation utilises the radio options connector PL1. This connector is located at the
bottom of the GP300 radio metal can shield, and is revealed by the can cut-out. This connector
consists of 8 solder pads, and is normally used for the GP300 Keypad interface. However, for nonkeypad GP300 models, these pads are available for Jana’s encryption modules.
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A130-STD INSTALLATION NOTES
Figure 1


Note: Fig 1 shows the usual radio PCB layout. However for different models
of radio, this layout may change. For information on the component layout for
each particular radio, see GP300 Radio Service Manual relevant for the user
radio model.


Code/ Clear:
Connect the 'Secure' wire (Loom Wire 4) from the scrambler onto the top button of the radio (top pin
of the two pins from the button). See Fig 2
PTT:
Connect the 'PTT' wire (Loom Wire 3) from the scrambler onto the PTT button of the radio (lower of
the two pins from the button). See Fig 2.
PA Mute:
The PA Mute is used to control the Bleep tones in Transmit mode. Locate Q411 on the radio PCB.
Lift the bottom right pin (out most on the PCB) of the Q411 SOT-23 transistor on top of a 0603 10k
resistor. This is shown in Fig 3. Attach loom wire 5 onto the connection between the 10k resistor and
the transistor pin. *
*Please note that some installations do not have loom wire 5 fitted, but instead is directly connected to the
scrambler PCB board itself.
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A130-STD INSTALLATION NOTES
Figure 2 - Fitting of Clear/Code and PTT loom wires

Figure 3 - Fitting of Audio Mute wire
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A130-STD INSTALLATION NOTES
Loom To Pad Interconnections:
Locate the eight solder pads found at the bottom of the radio PCB. This area is revealed by the cutout of the metal shields which cover the radio PCB.
The final part the installation requires a wire to pad interconnection between the encryption board and
the radio.
Make the following connections between the loom wires and the option connector pads:
Function
Loom
Colour
Loom
Wire
Number
Radio
Options
Pad
Tx In
Blue
1
5
+5v Vcc
Yellow
2
2
Rx In
Purple
6
7
Tx Out
Blue
7
4
Rx Out
Yellow
8
6
Ground
White
10
8
Figure 4 - Interconnection Between Radio Option Connector Pads and
Encryption Unit Loom Wires
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A130-STD INSTALLATION NOTES
8.4 Mounting The Encryption Board
After all the installation is complete, re-assemble the radio according to the Radio Service Manual.
Before mounting the radio body into the main radio chassis, place the encryption unit with the track
side down on top of the metal radio can, with the encryption unit connector facing the cut-out from the
radio option connector pads. Ensure the PCB side of the encryption unit is insulated properly so that
there is no electrical connection between the radio metal can and the solder joins on the encryption
unit. Connect the loomed connector into the encryption unit and fit into the main radio chassis. The
installation is now complete.
9. Jana Installation test
The following test procedure is recommended to ensure correct installation. Two radios are required,
a radio designated as the Master with a correct encryption installation and a Radio Under Test (RUT).
The following test assumes a default setting with bleep tones in both Rx and Tx mode.
Check 1: Combined power and Rx audio test
1) Switch on radio.
If there is no characteristic bleep sound from the radio upon switch on, check the power connections
between the encryption unit to the radio. Check also that Q411 has been soldered properly.
Check 2: Tx Test
1) After switch on, ensure the radio is in secure mode (Secure mode is default active upon switch on
if factory programmed). Press the PTT button. Listen to the master radio and check that the audio is
recovered satisfactorily.
If the audio is not recovered, check that the installation is correct and that no wires are trapped.
2) Select Clear Mode on both the RUT and the Master radio. Press the PTT button. Check that the
radio transmitting is generating bleeps from the speaker. If the bleeps are very quiet, then turn the
preset potentiometer (POT2) on the encryption board. See Fig 5.
Check 3: Rx Test
1) Select secure mode on both the Master radio and the RUT. Transmit from the master radio and
listen to the received audio on the radio under test. Check that the audio is recovered correctly. There
should be no bleep tones heard.
If the audio is not recovered properly check as Tx test.
2) Select Clear mode on both the Master radio and the RUT. Transmit from the Master radio and
check that the listening radio is successfully generating bleeps when receiving audio.
The installation test is now complete.
Note:
Jana’s Electronic’s circuits have been fully tested after assembly. This above test procedure is only at
installation level.
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A130-STD INSTALLATION NOTES
10. A130-STD PCB LAYOUT (Figure 5)
Page 11 of 11