Kenwood TK-90 User guide

Technical Manual

SC90 Selcall Board

for use with

Kenwood TK90 Radio

Jenal Communications Pty Ltd

www.jenal.com

Issue 2.00 - 15 Jun 2009

SC90 Operation

Basic Commands keys:

A

– Channel Up

Steps radio up one channel at a time - wraps to lowest channel
Also used to step through menus.

B

– Channel Down

Steps radio down one channel at a time - wraps to highest channel
Also used to step through menus.

C

– Enter Call Menu (See page 2.1)

D

– Enter Data/Display Menu (See page 3.1)

r – Scan/Mute on/off

If the TK90 is in normal mode and scanning is enabled then
pressing r starts scanning and sets mute ON.
If the TK90 is scanning, or mute is on, then pressing r stops
scanning and/or switches mute OFF. The TK90 will jump to the
channel it was on when scanning was started.
If the TK90 is scanning and a call has been received then pressing
r stops scanning and switches mute OFF. The TK90 will jump to
the channel it was on when the call was received.
If the TK90 is in alarm mode then pressing r will cancel the alarm
and reset the display.
r is also used as a general delete, back space or exit command
depending on where it is used.

PTT

- PTT can also be used to exit a function or cancel an alarm.

Warning:

If PTT is pressed while the TK90 is scanning then
scanning will stop and the radio will transmit on the current scan
channel. When the PTT is released the TK90 will jump back to the
channel it was on when scanning was started or to the channel an
incoming call was received on. Because of this the PTT should
only be pressed momentarily to stop scanning.

#

– Mute only on

Pressing # will switch the audio mute ON. To switch the mute
OFF press r.

Locked Mode

If the radio display shows “== LOCKED ==” see page 4.1

1.1

Call Menu

Basic Commands keys:

A

– Selection up

Steps menu up one selection at a time - wraps to lowest selection

B

– Selection down

Steps menu down one selection at a time - wraps to lowest
selection

C

- Selects the displayed selection

The following selections are available:

Selcall Page 2.2
Beacon Page 2.3
Hang Up Page 2.4
Telcall Page 2.5
Request GPS* Page 2.7
Send GPS* Page 2.8
Emergency Call* Page 2.9
Memory Store Page 2.10
Memory Recall Page 2.11
Recent Calls Page 2.12

Note: Pressing any key except A, B or C will exit the menu.

* “Send GPS”, “Request GPS” and “Emergency Call” may not be
available in the menu depending on programmed options.

The SC90 will remember, and automatically enter, any last used Selcall
or Telephone number where required. This makes it simple to repeat a
call. Whenever the unit is switched off these numbers are deleted.

2.1

Selcall

No previous calls sent

Operation Display

Press C to enter Call Menu

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

SELCALL

CALL TO

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a selcall to the number displayed

CALL TO NNNN

CALLING NNNN

To resend previous call

Operation Display

Press C to enter Call Menu

Press C to select menu option * see note 1)

Press C to send a selcall to the number displayed

SELCALL

CALL TO NNNN

CALLING NNNN

After previous calls have been sent

Operation Display

Press C to enter Call Menu

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

SELCALL

CALL TO DDDD

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a selcall to the number displayed

CALL TO NNNN

CALLING NNNN

1) Pressing r will exit the menu.

2) Pressing r will delete the last digit entered. When no digits are
displayed pressing r will exit the menu.

2.2

Beacon Call

No previous calls sent

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

BEACON

CALL TO

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a call to the number displayed

CALL TO NNNN

BEACON NNNN

To resend previous call

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Press C to send a call to the number displayed

BEACON

CALL TO NNNN

BEACON NNNN

After previous calls have been sent

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Enter four digits of call ID to be called

BEACON

CALL TO DDDD

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a call to the number displayed

CALL TO NNNN

BEACON NNNN

1) Pressing r will exit the menu.

2) Pressing r will delete the last digit entered. When no digits are
displayed pressing r will exit the menu.

2.3

Hang Up Call

No previous calls sent

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

HANG UP

CALL TO

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a call to the number displayed

CALL TO NNNN

HANG UP NNNN

To resend previous call

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Press C to send a call to the number displayed

HANG UP

CALL TO NNNN

HANG UP NNNN

After previous calls have been sent

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Enter four digits of call ID to be called

HANG UP

CALL TO DDDD

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a call to the number displayed

CALL TO NNNN

HANG UP NNNN

1) Pressing r will exit the menu.

2) Pressing r will delete the last digit entered. When no digits are
displayed pressing r will exit the menu.

2.4

Telcall

No previous calls sent

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

* see note 2)

Press C to continue

Enter up to 16 digits of telephone number 1 digit
2 digits
8 digits
9 digits
10 digits
* see note 1) 16 digits

Press C to send a telcall to the number displayed

TELCALL

CALL TO

CALL TO N
CALL TO NN
CALL TO NNN
CALL TO NNNN

ENTER TEL NO

TEL: 1
TEL: 21
TEL:[phone]
TEL[phone]
TEL[phone]
TEL[phone]

CALLING NNNN

To resend previous call

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Press C to continue * see note 3)

Press C to send a telcall to the number displayed

TELCALL

CALL TO NNNN

TEL[phone]

CALLING NNNN

After previous calls have been sent

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

TELCALL

CALL TO DDDD

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

CALL TO NNNN

2.5

Press C to continue * see note 3)

TEL[phone]

Enter up to 16 digits of telephone number 1 digit
2 digits
8 digits
9 digits
10 digits
* see note 1) 16 digits

TEL: 1
TEL: 21
TEL:[phone]
TEL[phone]
TEL[phone]
TEL[phone]

OR

go directly to next step to use the existing
telephone number

Press C to send a telcall to the number displayed

CALLING NNNN

1) Pressing r will exit the menu.

2) Pressing r will delete the last digit entered. When no digits are
displayed pressing r will exit the menu.

3) Telephone numbers are stored as a string of 16 digits/spaces.
A display of TEL: shows that there are 8 or less telephone digits.
A display of TEL+ shows that there are more telephone digits before the
8 digits shown.
You can toggle the display between the last 8 digits and the first (up to)
8 digits by pressing the # key (but only when at this step).
For a stored 16 digit telephone number of 1234567890123456 the
display will show for example TEL[phone] for the last eight digits and
TEL[phone]+ for the first eight digits. The + sign means there are
more digits either in front (TEL[phone]) or behind (TEL[phone]+)
the digits shown.

2.6

Request GPS

No previous calls sent

Operation Display

Press C to enter Call Menu

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

REQUEST GPS

CALL TO

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a call to the number displayed

CALL TO NNNN

GPS REQ NNNN

To resend previous call

Operation Display

Press C to enter Call Menu

Press C to select menu option * see note 1)

Press C to send a call to the number displayed

REQUEST GPS

CALL TO NNNN

GPS REQ NNNN

After previous calls have been sent

Operation Display

Press C to enter Call Menu

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

REQUEST GPS

CALL TO DDDD

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a call to the number displayed

CALL TO NNNN

GPS REQ NNNN

1) Pressing r will exit the menu.

2) Pressing r will delete the last digit entered. When no digits are
displayed pressing r will exit the menu.

2.7

Send GPS

No previous calls sent

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

SEND GPS

CALL TO

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a call to the number displayed

CALL TO NNNN

CALLING NNNN

To resend previous call

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Press C to send a call to the number displayed

SEND GPS

CALL TO NNNN

CALLING NNNN

After previous calls have been sent

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Enter four digits of selcall ID to be called

SEND GPS

CALL TO DDDD

CALL TO N
CALL TO NN
CALL TO NNN

* see note 2)

Press C to send a call to the number displayed
*see note 3)

OR

CALL TO NNNN

CALLING NNNN
NO GPS DATA

1) Pressing r will exit the menu.

2) Pressing r will delete the last digit entered. When no digits are
displayed pressing r will exit the menu.

3) If no GPS data is available then an error tone will be heard after a
short time and the NO GPS DATA warning will be displayed for 2 secs.

The GPS must be enabled in the options programming to be used.

2.8

Emergency Call

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option * see note 1)

Press C to send an emergency call * see note 2)

EMERGENCY

SEND EMERGY?

EMERGCY CALL

1) Pressing r will exit the menu.

2) If the GPS options are enabled then the SC90 will attempt (for up to 6
seconds) to get the GPS location data and send a GPS Emergency call.
If no GPS data is available the SC90 will send an Emergency Selcall
instead. If the GPS options are not enabled then the SC90 will
immediately send an Emergency Selcall.

3) The Transmit Emergency option has to be programmed for this menu
item to be available.

Emergency calls may also be initiated by using an external push button
or toggle (on/off) switch connected between pin 6 of the 9 way D
connector and ground.

If a push button is used then it has to be pressed for a minimum of two
seconds to initiate the emergency call. Each press of the push button
(for more than two seconds) will send an emergency call.

When an external toggle (on/off) switch is used then the operator only
has to activate the switch. The SC90 will then send three emergency
calls with thirty seconds of silence between them. To repeat this
sequence the operator has to set the switch to off and then back to on
again.

The SC90 will send a GPS Emergency Call, if a functioning GPS unit is
attached, otherwise it will send an Emergency Selcall.

Note that the radio is “silent” when an emergency call is sent using the
external emergency switch (that is no tones are heard while the call is
being sent).

2.9

Memory Store

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option

Or

Or

Press A or B to select desired memory location xx
(M01 to M10)
* see note 1)

When desired memory location is displayed enter
four digits of selcall ID to be called

* see note 2)

Press C to allow entry of telephone numbers
If the stored call is to be a Selcall then goto

1)

below * see note 3)

Enter required telephone number 1st digit
(max 16 digits) example 2nd digit
telephone no:1234567890123456 8th digit

9th digit

* see note 4) 16th digit

MEM STORE

M01 SEL DDDD
M01 TEL DDDD
M01 EMPTY

Mxx SEL DDDD
Mxx TEL DDDD
Mxx EMPTY

Mxx TO N
Mxx TO NN
Mxx TO NNN
Mxx TO NNNN

ENTER TEL NO

TEL: 1
TEL: 12
TEL:[phone]
TEL[phone]
TEL[phone]

1)

Press C to store the memory details

MEMxx STORED

Note 1) Select an empty location to insert a new memory or select an
occupied location to overwrite the existing details.

Note 2) Entering the Selcall number into a currently used location will
clear the existing number from the display

Note 3) The same procedure is used for storing Selcalls and Telcalls,
the only difference is that no telephone number is entered for a Selcall
(just press the C key again). The SC90 will store the call in the required
format.

Note 4) The display shows TEL: for the first 8 digits entered and the
digits are displayed. After 8 digits are entered the display shows TEL+
and the last eight digits entered are displayed. The “+” shows that more
than 8 digits have been entered. It is not possible to see the preceding
digits.

2.10

Memory Recall

Note: Only Selcalls (SEL) and Telcalls (TEL) can be stored.

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option
Or (Selcall)

Or

(Telcall)

1)

Press A or B to select desired memory location xx
(M01 to M10).If you wish to see a stored telephone
number go to 2) below.

Press C to send a Selcall (SEL) or Telcall (TEL) to
the displayed ID.

2)
a)

If the stored telephone number is 8 digits or less

the display will show the full telephone number.

MEM RECALL

M01 EMPTY
M01 SEL DDDD
M01 TEL DDDD

Mxx SEL DDDD
Mxx TEL DDDD
Mxx EMPTY

CALLING NNNN

TEL:[phone]

Pressing the # key again will show the memory
location details again.

Repeated pressing of the # key will toggle between
these two displays.

b)

If the stored telephone number is 9 digits or

more the display will show the first 1 to 8 digits.

Pressing the # key again will show the last 8 digits.

Pressing the # key again will show the memory
location details again.

Repeated pressing of the # key will toggle between
these three displays.

Pressing A or B will take you back to 1) above.

Mxx TEL DDDD

TEL 12+

TEL[phone]

Mxx TEL DDDD

Press C to send a Telcall (TEL) to the selected ID.

2.11

CALLING NNNN

Recent Incoming Calls

Note: Calls are stored in reverse order, that is the latest call is stored in
memory location R01. Details of up to 10 calls can be stored. The
details are lost when the radio is switched off.

The only incoming calls stored are Selcalls, Telcalls and GPS Data calls.
When a GPS Data call is stored the return call will be sent as a Selcall.

When a call is returned (by pressing the C key) it will be sent on the
channel the radio is currently set to. You must manually select another
channel number, if required, before sending the call.

Operation Display

Press C to enter Call Menu then A or B to select >

Press C to select menu option

1)

Press A or B to select desired memory location

Or

Or

Or

xx (R01 to R10). Additional information (including
channel number) is stored with the call.
For a Selcall (SEL) go to 2) below.
For a Telcall (TEL) go to 3) below.
For a GPS data call (GPS) go to 4) below.

2)

A stored Selcall is indicated by the SEL in the
display.
Pressing the # key will show the channel number
the call was received on.

RECENT CALLS

R01 SEL DDDD
R01 TEL DDDD
R01 GPS DDDD
NO CALLS

Rxx SEL DDDD
Rxx TEL DDDD
Rxx GPS DDDD
Rxx EMPTY

Rxx SEL DDDD

CHANNEL nn

Repeated pressing of the # key will toggle between
these two displays.

Pressing A or B will take you back to 1) above.

To Selcall the stored number press the C key

2.12

CALLING NNNN

3)

A stored Telcall is indicated by the TEL in the
display.
To see a stored telephone number press the # key.

Rxx TEL DDDD

a)

If the stored telephone number is 8 digits or less

the display will show the full number.

Pressing the # key again will show the channel
number the call was received on.

Repeated pressing of the # key will toggle between
these three displays.

b)

If the stored telephone number is 9 digits or

more the display will show the first 1 to 8 digits

Pressing the # key again will show the last 8 digits

Pressing the # key again will show the channel
number the call was received on.

Repeated pressing of the # key will toggle between
these four displays.

TEL:[phone]

CHANNEL nn

TEL 12+

TEL[phone]

CHANNEL nn

Pressing A or B will take you back to 1) above.

Press C to send a Telcall (TEL) to the selected ID.

4)

A stored GPS Data call is indicated by the GPS
in the display.

To see the stored latitude press the # key.

Pressing the # key again will show the longtitude.

Pressing the # key again will show the channel
number the call was received on.

Repeated pressing of the # key will toggle between
these four displays.

Pressing A or B will take you back to 1) above.

CALLING NNNN

Rxx GPS DDDD

12 34.567 N

123 45.678 W

CHANNEL nn

Press C to send a Selcall (SEL) to the selected ID.

2.13

CALLING NNNN

Data/Display Menu

Basic Commands keys:

A

– Selection up

Steps menu up one selection at a time - wraps to lowest selection

B

– Selection down

Steps menu down one selection at a time - wraps to highest
selection

D

- Selects the displayed selection

The following selections are available:

Selcall Type & ID This page
Software Version This page
Scan Timer clear Page 3.2
Display GPS Page 3.2

Note: Pressing any key except A, B or D will exit the menu.

Selcall Information

Operation Display

Press D to enter Call Menu then A or B to select >

Press D to select menu option

Or

SELCALL INFO

BARRETT NNNN
CODAN NNNN

Note: NNNN is the Selcall ID of this unit.

Software Version

Operation Display

Press D to enter Call Menu then A or B to select >

Press D to select menu option

Note: UUUU is the model number (eg: SC90)

VVVV.VV is the version number (eg: GCA1.00)

3.1

SOFTWARE VER

UUUU VVVV.VV

Auto-scan reset timer off

Operation Display

Press D to enter Call Menu then A or B to select >

Press D to select menu option

SCAN TIMER

TIMER OFF

If enabled, the auto-scan reset timer is a timer which will automatically
start the radio scanning after a programmable period if the radio is not
put into scanning mode by the user. This eliminates the radio being left
on a channel on which it cannot be contacted.

Use this selection to temporarily disable the timer. Pressing the r key
will re-enable the timer and put the radio back into scan mode.

Display GPS

Operation Display

Press D to enter Call Menu then A or B to select >

DISPLAY GPS

Press D to select menu option

If GPS data is NOT available

If GPS data is available

To see stored GPS data press the # key.
The display will show the latitude.

Pressing the # key again will show the longtitude.

Pressing the # key again will show the message.

Pressing the # key toggles between these three
displays

.

WAIT FOR GPS

NO GPS DATA

GPS LOCATION

12 34.567 N

123 45.678 W

GPS LOCATION

3.2

Locked Mode

If the radio display shows “== LOCKED ==” when switched on then the
radio has been disabled. You have 5 seconds to start entering the
unlock code (see below) - each key press resets the 5 second timer.

The radio is disabled (LOCKED) by sending a “Transceiver Lock Call”
type of selcall from a suitably equipped base station.

The SC90 can also be programmed to automatically lock the radio on
power up by selecting the “Power On Lock” in the optioning software.

To unlock the radio simply press the r key on the keypad followed by
the 8 digit unlock code, then press the # key. If you are successful then
the radio will beep three times and display “= UNLOCKED =” before
resetting.

A wrongly entered code will result in the error noise. The entry sequence
can be restarted at any time by pressing the r key.

The Lock and Un-Lock codes can be different numbers but both are 8
digits long.

A locked radio can also be reset by using the optioning programme.
Start the optioning programme and get to the “Connect” screen but do
not click on the “Connect” button. Switch on the radio then wait until the
error tone sounds and the “== LOCKED ==” message appears on the
display. Then click on the “Connect” button in the optioning programme
to enable reading and reprogramming the SC90.

Note: A locked radio will automatically switch off 5 seconds after power
on, or 5 seconds after the last key press, provided the Un-Lock code is
not successfully entered.

4.1

Receiving Calls

The SC90 can receive and process several different types of calls. The
following type of calls will sound an alarm (ringing) and be shown on the
TK90 display:

Selcall Page 5.2
Telcall Page 5.2
GPS Data call Page 5.2
Emergency selcall Page 5.3
GPS Emergency call Page 5.3

The following types of calls will be automatically handled by the SC90
and not sound any alarm or be shown on the TK90 display:

Beacon call radio responds with four long beeps
Hang up command radio ignores
GPS request call radio send back GPS location data
Radio lock call radio is disabled (see page 4.1)

The number of rings (alarm) that sound when receiving an incoming call
can be set in the option programming.

When the radio is in scanning mode the length of time the radio will stay
on channel before resuming scanning (Dwell Time) can be set in the
option programming.

The incoming call details shown on the TK90 display will remain there
until the PTT or the r key is pressed. The TK90 will jump to the channel
the call was received on either immediately, when the r key is pressed,
or after the PTT is released.

When calls have data attached (for example Telcalls or GPS calls) this
information can be accessed by pressing the # key repeatedly. This data
is only available until the PTT or the r key is pressed. After this the call
data is stored in the “Recent Calls” list.

When a call has been received, and the alarm cancelled, the caller can
be called back by using the CALL menu and selecting Selcall (for any of
incoming Selcall, GPS data call or Emergency call) or selecting Telcall
for an incoming Telcall. The Selcall ID and telephone numbers are
automatically entered providing no other calls have been made.

Note: only a Selcall can be sent in response to GPS data or Emergency
calls.

5.1

Receiving Selcalls

Operation Display

Selcall received - no other data stored

SELCALL NNNN

Where NNNN is the ID of the calling station.

Receiving Telcalls

Operation Display

Telcall received

1)

If telephone number is 8 or less digits

TELCALL NNNN

TEL: 123456

Press # to show number

Press # again to show caller ID

2)

If telephone number is greater than 8 digits

TELCALL NNNN

TEL 123456+

Press # to show first (up to) 8 digits

Press # again to show last 8 digits

Press # again to show caller ID

TEL[phone]

TELCALL NNNN

Where NNNN is the ID of the calling station.

Repeatedly pressing the # key will scroll through these displays.

Receiving GPS Data calls

Operation Display

GPS data call received

Press # to show latitude of calling station

Press # again to show longtitude of calling station

Press # again to show caller ID

GPSCALL NNNN

12 34.567 N

123 45.678 W

GPSCALL NNNN

Where NNNN is the ID of the calling station.

Repeatedly pressing the # key will scroll through these displays.

5.2

Receiving Emergency calls

Operation Display

Emergency call received

If call is a GPS Emergency call then press # to

EMERGCY NNNN

12 34.567 N

show latitude of calling station

Press # again to show longtitude of calling station

Press # again to show caller ID

123 45.678 W

EMERGCY NNNN

Where NNNN is the ID of the calling station.

Repeatedly pressing the # key will scroll through these displays. If not a
GPS emergency call then pressing the # star key will have no effect.

When an emergency call is received the alarm sound is not the normal
ringing but is three repeats of five rising tones.

5.3

Installing and programming the SC90 Selcall Board

Setting up the TK-90

Note: Before installing the SC90 make sure that the TK-90 has been
“flashed” with new firmware (TK90_M_FIRMV20400.HEX). The radio is
programmed using the KPG102D Ver 2.10 programming software (use
KPG102D_V210.zip). When the radio is operational there will be a “dot”
on the TK-90 display just above and between the 4th and 5th lower line
character positions on the TK-90 display.

1) Programme all channels as required making sure that “Scan add” and
“Selcall” are both set to “NO” and that “AUX” is set to “inactive”. The
SC90 can scan a maximum of 20 channels starting at channel 1.
Channel numbers higher than the highest number programmed in the
SC90 can be accessed only using the channel UP/DOWN buttons on
the front panel of the radio.

2) Programme all “Optional Features” as required making sure on the
“Common Page” that:

a) “Call Type” is set to “OFF”.
b) “Com Port Settings” is set to “PC command”.
c) “Polarity” is set to “Normal”.
d) “Mic Key Command” is ticked
e) “User Activation” is set as “Disabled”

3) Programme the “Key Assignments” as required making sure on the
“Mic Key” page that the “Keypad” is selected as “16 Key”. All other
functions on the page are not available, nor are the functions of the
“Direct Channel” page. Functions on the “Panel” page are available but
care should be used when selecting them as to not conflict with the
operation of the SC90.

4) On the “Extended Functions” programme “AUX1" so that “I/O” is set
to “Output”, “Function” is set to “TX SENS” and “Active” is set to “low”.
Ensure that none of the “Optional Boards” are selected (ticked).

5) The following pages are not active when using the SC90:
a) Scan Information
b) Selcall Function
c) GPS
d) Special alert tone
e) Emergency Information
f) Embedded Message
g) Embedded Message with Password

6.1

Installing the SC90

Once the TK-90 programming is complete we are ready to install the
SC90.

1) Remove the top

cover from the TK-90

2) Install the SC90 in

the position normally
reserved for the ALE
board (front right of
radio) using the three
screws provided.
Note: The provided
screws are thread
cutting screws and
will be relatively hard to screw in the first time as they cut the thread in
the chassis mounts. When re-inserting the screws after they have been
removed be very careful to ensure they use the existing cut thread.

3) Install a wire from the PCB side of CN10 pin 8 to IC521 pin 8.

4) Install a wire from the PCB side of CN10 pin 9 to IC521 pin 9.

6.2

5) Plug the 15 way connector of the cable loom into the 15 way

connector on the SC90 and position the cable loom so it runs down the
left hand side of the radio between CN14 and the cover 700 (see
Exploded View in the TK90 Technical Manual).

6) Plug the 11 way connector of the cable loom into CN10 of the TK-90.

7) Plug the 12 way connector of the cable loom into CN9 of the TK-90.

8) Plug the small 3 way connector of the cable loom into CN8 of the TK-

90.

9) Plug the large 3 way connector of the cable loom into CN7 of the TK-

90.

10) Plug the small 9 way

connector of the GPS/RS232
cable into the 9 way
connector on the SC90 board
Making sure the wires will not
be trapped by the cover when
it is replaced.

6.3

Run this cable down the left
hand side of the radio to exit
through the rear panel of the
TK-90 (remove the exit hole
sticky cover - item 23 - see
Exploded View in the TK-90
Technical Manual). Ensure the
cable tie on this cable is on the
inside of the rear panel for
strain relief purposes.

11) Power on the radio and wait until the message “SELF ID NNNN”

displays and then clears. Set the Alarm Audio Level by adjusting VR3
(marked AL on the SC90 PCB) to give a suitable level when pressing
keys on the microphone.

12) To set the Selcall Transmit Audio Level, connect a suitable power

meter and dummy load to the antenna connection of the TK-90 then
send a Selcall (see operating instructions). While a Selcall is being
transmitted adjust VR2 (marked TX on the SC90 PCB) so that the power
meter reads (preferably) between 30% and 40% of full power output for
the selected channel transmit power (for example 1.5w to 2w on the 5w
range, or 30w to 40w on the 100w range). Check the range of channels
and power levels available to make sure that the output power is
preferably not over 50% on any. If it is then reduce the Transmit Audio
Level to below 40% and recheck.

Note that selcalls will get through even when voice calls will not so a low
selcall power level is quite acceptable.

The SC90 is now ready to be programmed for use.

Programming the SC90

The SC90 is programmed using a PC running the SC90 programming
software. All communication between the PC and the SC90 is by using
RS232 serial data via the GPS/RS232 port on the SC90 and a serial
port on the PC

Note: Before connecting the PC to the SC90 make sure that the Chassis
of the TK-90 is connected to the Ground/Chassis of the PC - this will
reduce the risk of damage by static discharge.

If using an USB to RS232 converter, please be aware that some do not
work very well or may require other connections on their RS232 port to
function successfully.

6.4

Connect the PC serial port to the SC90 GPS/RS232 port using a cable
wired as follows:

SC90 PC

2 --------------------------- 2

DE9 Male 3 --------------------------- 3 DE9 Male

5 --------------------------- 5

OR

SC90 PC

2 ---------------------------- 2

DE9 Male 3 ---------------------------- 3 DB25 Female

5 ---------------------------- 7

Do not make any other connections!

Run the SC90P100SETUP.EXE (or similar) programme to install the
Jenal SC90 programming software on your PC.

Switch on the TK-90 and wait for the “SELF ID NNNN” message to be
displayed and cleared. Run the SC90 programming software (similar to

- Start > Programs > Jenal > SC90p100 > SC90p100), select the

appropriate Com port on the PC and then click “Connect”. If all is well
the PC software will connect to the SC90, download it’s settings and
display them.

Change the settings to what you require (for example Selcall ID, Format,
etc.) and then click on “Programme”. The software should write the new
information to the SC90 and verify it, and then show either a success
message or an error message.

The verify button allows you to check that what is shown on the screen
matches what is programmed in the SC90.

Once the SC90 is successfully programmed click on the exit button to
exit the programme. This will also reset the SC90 board which will then
generate a tone and show it’s self ID on the TK-90 display.

Remove the SC90 GPS cable if not required for normal operation and
replace the TK-90 top cover. The SC90/TK-90 is now ready for
operation.

6.5

External Interface Connector

The external interface connector is a female 9 way D connector. This is
used for the following:

a) Connecting to a PC for programming the SC90
b) Connecting to an external GPS unit (RS232 or TTL levels)
c) Driving external indicators (or relays) for the Horn and Latch

alarms

d) Connecting to a push button or switch for sending emergency

alarms (external emergency switch)

The following connections (pin numbers) are available on the female 9
way D connector:

1) TTL level input (see below)

2) RS232 output (transmit data from the SC90)

3) RS232 input (receive data into the SC90)

4) TTL>RS232 output (see below)

5) Ground

6) External Emergency switch input

7) Latch Alarm output

8) Horn Alarm output

9) Spare output

Connecting to a PC for programming the SC90

See page 6.5 for cable connections to a PC for programming.

Connecting to an external GPS unit (RS232 or TTL levels)

When using a GPS unit with RS232 output connect the ground to pin 5
of the 9 way D connector and the received data to pin 3.

When using a GPS unit with TTL level output connect the ground to pin
5 of the 9 way D connector and the received data to pin 1. Then connect
pins 3 and 4 of the 9 way D connector together.

Driving external indicators (or relays) for the Horn and Latch alarms

Both these outputs are open-collector outputs rated at 30v DC 100mA.

Latch Alarm - Connect a relay or indicator between pin 7 of the 9 way D
connector and a positive supply. Connect a protection diode across any

7.1

inductive load (for example a relay). The Latch Alarm is operated when a
successful incoming call is received and remains operated until the
alarm is cancelled by the operator. It is not activated by incoming
emergency calls.

Horn Alarm - Connect a relay or indicator between pin 8 of the 9 way D
connector and a positive supply. Connect a protection diode across any
inductive load (for example a relay). The Horn Alarm is operated at the
same time as the audio alarm sounds on the radio. It is not activated by
incoming emergency calls.

External emergency switch

Connect either a push button or a toggle (on/off) switch between pin 6 of
the 9 way D connector and ground (pin 5). The External Emergency
Switch option has to be enabled in the programming to allow the use of
the external switch.

If a push button is used then it has to be pressed for at least two (2)
seconds to initiate the emergency call. The push button has to be
pressed (for at least two (2) seconds each time) to re-send the
emergency call.

When a toggle (on/off) switch is used then the operator must set the
switch to “on” to initiate the emergency sequence. The SC90 will send a
total of three (3) emergency calls with a silent period between calls of
approximately thirty (30) seconds . To repeat this sequence the
operator must set the switch to “off” and then back to “on”.

The SC90 will send a GPS Emergency Call, if a functioning GPS unit is
attached, otherwise it will send an Emergency Selcall.

Note that the radio is “silent” when an emergency call is sent using the
external emergency switch (that is no tones are heard while the call is
being sent).

7.2

7654321

8

R8

150k

C18
0u1

+5

+5

R10

100k

C6
10n

C7
47n

D

C

R18 4k7

C3

27n

R2 10k

R4 2M2

8

IN

5

Q

6

Q*

2

I/P

13

C1

14

C2

IC2

XR2211

VCC

OUT

VREF

LOOP

LOCK

GND

R3

Freq

TP3

10k

R1
100k

FREQ
ADJ

R7
18k

VR1
5k

1

7

10

11

12

R

3

LK5

4

nc

C4

1u0

R5
150k

C15
0u1

C5
2u2

R6
22k

C1

1N

Q1

D

CN1
15PIN

+12

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Rx Audio in

Spare

PTT Out

Mute line

Spare
Spare
Spare

PTT in

Reset line

Receive data in

Transmit data out

Alarm audio out

Transmit audio out

C

Supply in

Ground

BC846A

A2
A1
A0
B4
B5
B6
B7

D0
D1

C101NC17

Q2

BC846A

R23 1k0

R25 1k0

1N

Q3

BC846A

R22 1k0
R21 1k0
R20 1k0
R19 1k0

X1

8MHz

1
2
3
4
5
6
7
8

9
10
11

R17 4k7

R26 4k7

44

PB5
PB6
PB7
RESET
VCC
GND
XTAL2
XTAL1
PD0
PD1
PD2

MEGA32TQFP

PD312PD413PD514PD615PD716VCC17GND18PC019PC120PC221PC3

IC1

37

38

39

VCC

22

PA334PA235PA136PA0

PA4
PA5
PA6
PA7

AREF

GND

AVCC

PC7
PC6
PC5
PC4

PB040PB141PB242PB343PB4

GND

C25
0u1

+5

33
32
31
30
29
28
27
26
25
24
23

Link LK5 and
open LK4 for
normal use

Link LK4 and
open LK5 for
adjusting
centre freq.

Adjust using
VR1 for a
frequency of
1785Hz at TP3

FACTORY PRESET!

TP1

1

Strobe

C2

0u1

LK4

no

TP2
Data

84

3

2

B

+12

C21
1u0

A

D1
BAV99

8

C24
0u1

IC3A
LM358

1

IC3B
LM358

7

C20
0u1

R29
4k7

R28
150k

VR2
5k

R27
100k

VR3
5k

R30
4k7

C13
0u1

R34 4k7

R35 4k7

R36 4k7

Alarm audio level

B

C11

For GPS units with

TTL level interface

connect to DB9 pin 1

and link DB9 pin 3

to DB9 pin 4

GPS connector also
used for programming

CN2
9PIN

TTL in

RS232 out

RS232 in

TTL>RS232 out

A

External input

Latch alarm out

Horn alarm out

Ground

Spare

1
2
3
4
5
6
7
8
9

0u1

1

C1+

3

C1-

4
C12
0u1

C3
A7
A6
A5

C2+

5

C2-

13

R1 IN

8

R2 IN

14

T1 OUT

7

T2 OUT

IC4

MAX232

VCC

GND

R1 OUT
R2 OUT

T1 IN
T2 IN

R24 1k0

V+

V-

TX audio level

C14
0u1

2

16
15

C16
0u1

6

12
9
11
10

BAV99

+5

D4
BAV99

Q8

D2

BC846A

Q7

BC846A

Q6

BC846A

R37 1k0

1k0

5

6

R11 22k

R14 22k

R15 22k

C22

10u

+5R39

R12 330R

R13 330R

C8

10u

+5

Title

C23
0u1

C9
10u

GND

GND3GND4GND5GND6GND

2

IC6LM2931AZ-5

Vin

7

1

+5V

SC90 GPS/Selcall/Telcall Interface

Number RevisionSize

A3

Date: 26-Mar-2009 Sheet of
File: C:\PCBS\SC90\SC90V101.S01 Drawn By:

1 2 3 4 5 6 7 8

Ver 1.01