Midian SVR-1-KW2 User manual

1
SVR-1-KW2
Simplex Repeater Maker
Manual Revision: 2015-11-13
Covers Soft are Revisions:
VS-1XXX: Rev A 01.31.00 & Higher
This manual & product supports the following radios:
Portables: TK 2170, TK 3170

2
HARDWARE SPECIFICATIONS
Operating Voltage 4.75 9.5 VDC
Operating Current
Power Save Mode (COR Operation) 2.5 mA typical
Power Save Mode (VOX Operation) 10 mA typical
Repeat Operation 17.5 mA typical
Average w/COR Power Save (80 10 10 cycle) <5 mA
Average w/COR Power Save (90 5 5 cycle) <4 mA
Operating Temperature 30 +60 C
Frequency Response 300 3000 Hz
Input Impedance >45 kΩ
Input Level (TX) 0.05 2.5 VPP
Input Level (RX) 0.05 2.5 VPP
Audio Output Impedance < 1200 Ohm
INSTALLATION OVERVIEW
1. Test the radio for functionality.
2. Program the SVR per the Product Programming Section of this manual.
3. Install the SVR into the radio per the Hardware Installation Section of this manual.
4. Program the radio per the Radio Programming Section of this manual.
*** Midian is not responsible for any damage/loss resulting from the use of Midian’s products.

3
GENERAL INFORMATION
Midian’s SVR 1 is a simplex repeater maker that can be installed into a portable radio. The SVR 1 detects COR
or VOX from an incoming transmission and records the incoming audio (up to 3 minutes). When the COR or VOX
is no longer detected the SVR 1 keys the radio and retransmits the recorded audio. The SVR 1 enables users to
expand radio coverage into poor coverage areas.

4
1B PRODUCT PROGRAMMING
The SVR series are programmed using Midian’s KL 4F and the MPS software
Go to our website midians.com and under downloads> software download the latest MPS software version. If
using the supplied CD ROM insert it into the PC’s CD ROM drive. In the browser that will pop up, install the MPS
programming software. Be certain that the “Install KL 4 USB Driver” box is checked during the installation
process.
Open Windows’ Control Panel and go to Device Manager.
Open Ports (COM& LPT) to identify the port assignment issued by computer. Plug in the KL4 programmer to the
USB port and the screen will flash and show the device location.
Open the software and choose product from product tree then set appropriate comport selection in the MPS
software as needed
After entering the parameters, save the file by going to File Save As. Enter the file name in the File Name block
and click Save. Saving the file will allow for quick and easy reprogramming of units.
KL-4 Programming: The Yellow and Green KL 4 leads need to be connected to the unit for programming.
Connect the green KL 4 lead to the program in hole (see below), connect the yellow KL 4 lead to the program out
hole (see below) on the unit. The black lead does not need to be connected when using the KL 4. Plug the board
onto the KL 4 p 7 KW2 connector. Push and hold the power button on the KL 4 and wait three seconds, then
click “Program Unit” in the KL 3 software.
KL-4 Reading: The Yellow and Green KL 4 leads need to be connected to the unit for reading. Connect the
green KL 4 lead to the program in hole (see below), connect the yellow KL 4 lead to the program out hole (see
below) on the unit. The black lead does not need to be connected when using the KL 4. Plug the board onto the
KL 4. Push and hold the power button on the KL 4 and wait three seconds, then click “Read Unit” in the KL 3
software.
Program In
Program Out

5
Store on COR/Store on VOX: Select the appropriate method that the unit should use to start recording incoming
audio.
COR Hold-Up Time This sets the amount of times after a loss of COR or VOX that the unit will wait until it
retransmits the recorded audio.
VOX Settings > Sensitivity: This is a threshold detection based on the energy level in the audio.
VOX Settings > Attack Time: This sets the minimum time before the unit will detect VOX based on the sensitivity
setting.
VOX Settings > Decay Time: This sets the time before the unit will drop the VOX detection. Be certain to set this
long enough so that you do not have drop outs between words or on brief pauses.
Beep Options > Po er Up: Enables a short beep sequence that takes place immediately after power up.
Beep Options > Error: This beep may be triggered by any input event if programmed to do so. For example, if a
long press on the Mode Input is not assigned to a function, it may be configured to generate the error beep.
Beep Options > Mode: Not used as the radio offers its own mode tones for the option board enable.
Beep Options > Go Ahead: Not currently used.
Beep Options > Wake Up Beep: Enables a short beep to be sent over the air immediately after PTT is pressed.
Enabling this beep is recommended when the 'Wake on VOX' feature is used. This may also be used to get the
attention of the party receiving a call.
Beep Options > Courtesy Beep: If selected, once the unit is done retransmitting the recorded audio it will
generate a courtesy tone to let others know it is done retransmitting.
Voice Compression: If checked the SVR 1 can store up to a 3 minute voice message. If unchecked the SVR 1
can store up to a 2.25 minute voice message, but with a higher level of audio quality.

6
Po er Up In Store/Retransmit Mode: If selected the unit will power up in repeat mode. This box must be
selected if doing repeat enable on a per channel basis.
Key-Up Delay: This sets the amount of time the unit waits after keying the base station radio before it starts to
retransmit the recorded audio.
Trunking Delay Enable: Check this box if using a trunking system. This will cause the unit to hold off
regenerating the recorded audio until it has received a channel acquisition acknowledgement from the base
station radio.
Common PTT: Check this box if PTT In and Out are connected to the same point.
PTT Cancels Store/Retransmit: If checked and the PTT is pressed during store/retransmit the unit will not
retransmit the incoming transmission.
Number of Retransmits: This sets how many times the unit will retransmit the last recorded audio clip.
Retransmit Interval: This sets the time interval between the retransmits set in the Number of Retransmits field.

7
PTT > Active Polarity: This sets whether the unit looks for an active low or active high to cancel a
store/retransmit.
PTT > Debounce: If checked the unit will require a continuous active state for 30 msec before accepting the PTT.
Mode > Type: Select whether the switch is Momentary or Latched. In this case it should be Latched.
Mode > Active Polarity: Select the active polarity of the mode switch. In this case it should be Low.
Mode > Debounce: If checked the unit will require a continuous active state for 30 msec before accepting the
mode change.

8
COR > Active Polarity: This sets whether the unit looks for an active low or active high to start recording the
received audio.
COR > Debounce: If checked the unit will require a continuous active state for 30 msec before accepting the
COR.
PTT > Active Polarity: This sets the polarity necessary for the unit’s PTT output to key the radio.
Audio Enable > Active Polarity: This sets the polarity necessary for the unit to enable the speaker of the radio to
pass beeps.

9
Tones > Beep Volume: Adjust the slider for the desired beep volume. This level is expressed as a percentage of
max voice audio level.
Tones > Over-The-Air-Signal Modulation: Adjust the slider for the desired beep volume. This level is expressed
as a percentage of max voice audio level.
Playback > Playback Level: This controls the audio level when a stored voice message is played back on the
radio speaker. If voice playback is too low or too loud, adjust this level accordingly.
Playback > Transmit Level: This controls the audio level when a stored voice message is retransmitted over the
air. If the transmit level is too low or too loud, adjust this level accordingly.

10
AUDIO LEVELS ALIGNMENT
Midian recommends using the default programming file, which can be found in (C:\Program
Files\Midian\MPS\MPS_v5_xx\Additional Default Files) after installing the latest MPS software.
This section describes how to determine and set the audio levels.
Audio Levels Overvie :
To ensure the best audio quality, the SVR must be configured to match the audio levels used by the radio. The
SVR uses programmable gain amplifiers to accomplish this. Determining the gain settings for these amplifiers is
an involved process, so Midian simplified this process by developing an algorithm that requires the technician to
make only four voltage measurements. From these four measurements, all of the many internal settings are
determined.
Still, getting the best audio quality will likely require a bit of trial and error. The SVR only has control of audio
voltage levels, not input and output impedances. These impedances can dramatically influence the levels.
The Four Voltage Measurements:
An oscilloscope and a communications test set/service monitor are required for the measurements. It is
recommended that the measurements be recorded in units of mV peak to peak. Each measurement must be
taken with system modulation at either 60% or 100%, but Midian recommends using 60%
A method for controlling transmit modulation is required for accurate measurements in the TX mode. A small
speaker held in place near the microphone by a rubber band can serve this purpose in most cases. Use a sine
wave generator to inject a 1000 Hz tone into the speaker. Adjust the output of the sine wave generator so that the
transmitter produces 60% of rated modulation while PTT is pressed. Note that if the audio source (such as a
speaker) is moved even slightly, the TX modulation may change significantly. Care must be taken to avoid
changing the TX modulation while taking the measurements.
The first two measurements must be taken using a radio that has not been modified. The 2
nd
two measurements
require that the SVR is installed and power is applied to the radio/SVR. These measurements must be taken
within 15 seconds of powering the SVR on. This is because the SVR may enter power saving mode after that
time. Measurements made while the SVR is in power saving mode will not be valid. The unit ships with the power
save feature enabled by default. The power save feature can be disabled via the KL 3 programming software so
that it will not interfere with taking measurements, if desired. Please note that the levels provided to the option
board are different between narrow band and wide band.
1. RX Output: The goal of this procedure is to determine the audio level that would normally appear at the RX
audio insertion point in an unmodified radio. With a fully quieting signal modulated with a 1000 Hz tone at
60%. Measure the voltage level appearing at the junction of R 167 and R 169.
2. TX Output: The goal of this procedure is to determine the audio level that would normally appear at the TX
audio insertion point in an unmodified radio. Provide the radio an audio source generating a 1000 Hz tone and
key the radio. Adjust the audio source such that the modulation is at 60%. Measure the voltage level
appearing at R 170 on the radio.
3. RX Input: The goal of this procedure is to determine the audio level that the unit will see at the RX audio
pickup point after it is installed.
The unit must be installed and powered on while making this measurement. Modulate a 1000 Hz tone at 60%.
Measure the audio level at TP2 on the unit.
4. TX Input: The goal of this procedure is to determine the audio level that the unit will see at the TX audio
pickup point after it is installed.

11
The unit must be installed and powered on while making this measurement. Provide the radio the same audio
source and level as in Step 2, generating a 1000 Hz tone and key the radio. Measure the audio level at the
TP1 on the unit.
Programming the Audio Levels:
After determining the audio levels at the audio hookup points, it will be necessary to program the SVR to match
these levels. In the programming software, there is a slider control on the Audio Levels Screen for each of the of
four audio hookup points. Locate the column that corresponds to the modulation and units of measurement for
each of the audio hookup points. Adjust the slider bar such that the value appearing in the appropriate column
matches what was measured as closely as possible. Midian recommends the following values based on 60%
modulation:
Radio Model
RX In
TX In
RX Out
TX Out
TK 2170, TK 3170 756 186 786 186

12
HARDWARE INSTALLATION
Be certain to follow standard anti static procedures when handling any of Midian’s products. Due to the design of
the options connector in the radio it is necessary to install two wires from the SVR 1 KW2 to the Kenwood radio.
PTT: In order to be able to automatically key the radio it is necessary to install a wire from the point shown in the
picture below to a point in the radio as discussed in the installation instructions for the desired model radio.
COR: In order to start recording the SVR 1 can look for COR or VOX. Midian recommends using COR rather than
VOX. COR is not brought up to the options connector so it is necessary to run a wire from the point shown in the
picture above to a point in the radio as discussed in the installation instructions for the desired model radio.
SVR 1 KW2 PTT Pad
Empty pad of R46
SVR 1 KW2 COR Pad

13
Be certain to follow standard anti static procedures when handling any of Midian’s products.
TK-2170/3170:
This radio requires radio firmware version 1.22.00 (checksum 08C3) or higher.
1. Remove R 170 to open the radio’s TX path and R 167 to open the radio’s RX path.
2. Solder a jumper from pad SP_M in the radio to the COR Input pad on the unit.
3. Plug the unit into the options connector, CN60.
4. Solder the PTT wire described on the previous page to the junction of L3 and C28.
Remove R 167 Remove R 170
Install jumper
from pad SP_M
to the COR pad
on the SVR

14
RADIO PROGRAMMING
TK-2170/3170:
This radio requires KPG 101D v 2.20 or higher for programming.
1. Under the “Model” menu select “Product Information” and set “Optional Board” to “Voice Scrambler”.
2. Under “Edit” “Extended Function” disable the “Echo PTT”.
3. Under the “Edit” menu select “Key Assignment” and set “Side 1” or “Side 2” under the “Top/Side” tab as
“Scrambler”. This will set the button under the PTT as the repeater enable button.
4. If repeat on a per channel basis is desired or a combination of a mode button and per channel, then from the
“Zone Information” screen click on the “Channel Edit” button. Under “Scrambler Setting” enable the “Voice
Scrambler”. For repeat on a per channel basis, this will need to be done for each channel where repeat is
desired. If the box is checked, the radio will power up in repeat mode & when that channel is selected. When
per channel repeat is used, it is still possible to toggle in and out of repeat mode.

15
OPERATION
SVR Operation:
Repeater Enable/Disable: Press the radio key that was assigned in the radio programming. A tone will be
emitted from the radio and the ◊ symbol will appear on the display of the radio indicating repeat mode. If repeat
on a per channel basis is being used, then switching between an enabled or non enabled channel causes the ◊
symbol to appear or disappear.
Repeat: With the SVR enabled, when the unit detects COR or VOX (depending on programming) it will record the
incoming audio transmission. When COR or VOX drops for a preprogrammed amount of time, the unit will key the
connected transceiver and retransmit the recorded audio.
TECHNICAL NOTES
Radio Compatibility: Midian has taken the utmost care to ensure the option board integrates into the radio with
minimal impact to the features of the radio. However, some features may not be available in the radio when an
option board is used. If a feature is not available, please contact Midian to see if the feature can be added.
Button Presses: When the SVR 1 KW2 is enabled and a button on the radio is pressed the radio generates
beeps, which in turn causes the SVR to key the radio and generate the beeps over the air.
MIDIAN CONTACT INFORMATION
Midian Electronics, Inc.
2030 N. Forbes Blvd. #101
Tucson, Arizona 85745 USA
Orders: 1 800 MIDIANS
Phone: [phone] Fax:
520 884 0422
E-mail: [email protected]
Web: www.midians.com

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5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
+VIN
+3.3VDD
+3.3VDD
+3.3VA
+3.3V
VAN
VAN
VAN
VAN
+3.3V
+3.3V
+3.3V
+3.3V +3.3V +3.3V
+3.3V
+3.3V
+3.3VDD
+3.3VA
AGND
+3.3V
+3.3V
+3.3V
+3.3V
+3.3V
AGND
VAN
+3.3V
+VIN
+3.3V
+3.3V
+3.3V
A_ROUTE
B_ROUTE
B_ROUTE
A_ROUTE
COR_IN
COR_IN
TRUNK_DLY
TRUNK_DLY
SIZE DOCUMENT NUMBER
REV
DATE SHEET
of
FILE NAME
SCHEMATICAPPR.
MIDIAN ELECTRONICS INC.
REV.
DWN. BY
DESIGN
509-A-1
A-1
VS-1200
C
1 1
sch_509_A1
KW2
CJS
AS
12/16/2007
07/04/2008 Copyright © 2008
SIZE DOCUMENT NUMBER
REV
DATE SHEET
of
FILE NAME
SCHEMATICAPPR.
MIDIAN ELECTRONICS INC.
REV.
DWN. BY
DESIGN
509-A-1
A-1
VS-1200
C
1 1
sch_509_A1
KW2
CJS
AS
12/16/2007
07/04/2008 Copyright © 2008
SIZE DOCUMENT NUMBER
REV
DATE SHEET
of
FILE NAME
SCHEMATICAPPR.
MIDIAN ELECTRONICS INC.
REV.
DWN. BY
DESIGN
509-A-1
A-1
VS-1200
C
1 1
sch_509_A1
KW2
CJS
AS
12/16/2007
07/04/2008 Copyright © 2008
FACTORY
(SOURCE)
NOTES:
* = NOT INSTALLED
FACTORY
DSP
R10
10K
R10
10K
R43
*
R43
*
R11
10K1%
R11
10K1%
C38
12p
C38
12p
P1-13P1-13
Q7
NTA4001
Q7
NTA4001 C39
100p
C39
100p
D8
S 1
D8
S 1
D6
S 1
D6
S 1
R17
*
R17
*
TP5TP5
R30
4.7K
R30
4.7K
C30
.1u
C30
.1u
PAD2
COR IN
PAD2
COR IN
R46
*
R46
*R55
*
R55
*
P1-15
N/C
P1-15
N/C
C27
2.2u
C27
2.2u
D9
S 1
D9
S 1
R25
1K
R25
1K
U5U5
3
1
2
4
5 6
TP13TP13 P1-17
TXI
P1-17
TXI
-
+
U7C
LMV324M
-
+
U7C
LMV324M
9
10 8
PAD3
PROG IN
PAD3
PROG IN
L1
0R
L1
0R
C19
560p
C19
560p
C2
560p
C2
560p
C10
.1u
C10
.1u
R9
10K
R9
10K
U4U4
7 4 8
2 5
1 6 3
P1-2
+7.5V
P1-2
+7.5V
TP11TP11
P1-19
RXEI
P1-19
RXEI
R36
*
R36
*
C15
.0068u
C15
.0068u
D11
S 1
D11
S 1
U3U3
R53
0R
R53
0R
P1-4
OPT 3
P1-4
OPT 3
TP1TP1
TP7TP7
R1
47K
R1
47K
R32
1K
R32
1K
TP6TP6
TP8TP8
R54
0R
R54
0R
C21
.01u
C21
.01u
C12
.1u
C12
.1u
R48
*
R48
*
P1-6
OPT 6
P1-6
OPT 6
44
C24
220p
C24
220p
C42
.1u
C42
.1u
VR3
MIC5206
VR3
MIC5206
IN1
1
ENA
3
GND
2RES 4
OUT 5
P1-8
PTT OUT
P1-8
PTT OUT
C20
2.2u
C20
2.2u
P1-10
PROG IN
P1-10
PROG IN
C37
560p
C37
560p
C22
.1u
C22
.1u
R14
100K
R14
100K
R45
0R
R45
0R
C33
.1u
C33
.1u
D10
S 1
D10
S 1
C31
.1u
C31
.1u
TP18TP18
P1-12
TXO
P1-12
TXO
R21
36K
R21
36K
R33
1K
R33
1K
C41
.1u
C41
.1u
R40
100K
R40
100K
C5
1u
C5
1u
R20
1.2M
R20
1.2M
R47
0R
R47
0R
C1
560p
C1
560p
D4
S 1
D4
S 1
R26
1K
R26
1K
C45
.01u
C45
.01u
22
R4
47K
R4
47K
P1-14
N/C
P1-14
N/C
TP9TP9
PAD8PAD8
C32
10u
C32
10u
TP15TP15
C43
560p
C43
560p
R18
56K
R18
56K
R41
47K
R41
47K
-
+
U7B
LMV324M
-
+
U7B
LMV324M
6
57
R49
2R
R49
2R
R28
4.7K
R28
4.7K
TP10TP10
C13
.1u
C13
.1u
C7
.1u
C7
.1u
P1-16
SIDE TONE
P1-16
SIDE TONE
PAD6
AUDIO ENH
PAD6
AUDIO ENH
P1-18
RXEO
P1-18
RXEO
-
+
U7D
LMV324M
-
+
U7D
LMV324M
13
12 14
411
R50
2R
R50
2R
TP17TP17
TP4TP4
C29
.1u
C29
.1u
C25
.1u
C25
.1u
55
R2
47K
R2
47K
C36
10u
C36
10u
P1-1
GND
P1-1
GND
R38
47K
R38
47K
C28
.1u
C28
.1u
R52
4.7K
R52
4.7K
P1-3
OPT 1
P1-3
OPT 1
R51
2R
R51
2R
C18
.001u
C18
.001u
TP3TP3
R23
*
R23
*
R12
10K1%
R12
10K1%
P1-20
MODE IN
P1-20
MODE IN
C17
*
C17
*
C48
.1u
C48
.1u
C46
.1u
C46
.1u
C3
.1u
C3
.1u
VR1
MIC5206
VR1
MIC5206
IN1
1
ENA
3
GND
2RES 4
OUT 5
TP2TP2
R39
47K
R39
47K
C14
100p
C14
100p
VR2
MIC5206
VR2
MIC5206
IN1
1
ENA
3
GND
2RES 4
OUT 5
R15
100K
R15
100K
R31
47K
R31
47K
C16
.0068u
C16
.0068u
P1-5
N/C
P1-5
N/C
PAD1
EMER IN
PAD1
EMER IN
R13
27K
R13
27K
C23
.1u
C23
.1u
Q6
NTA4001
Q6
NTA4001
R44
*
R44
*
R42
1.2M
R42
1.2M
33
C26
2.2u
C26
2.2u
C4
560p
C4
560p
D5
S 1
D5
S 1
C40
2.2u
C40
2.2u
C11
.0047u
C11
.0047u
R35
*
R35
*
P1-7
OPT 5
P1-7
OPT 5
U6
*
U6
*
CS
1
SO
2
SI
5
SCK
6
VCC 8
HOLD 7
WP 3
GND 4
TP12TP12
-
+
U7A
LMV324M
-
+
U7A
LMV324M
2
31
R7
47K
R7
47K
Y1Y1
Q8
*
Q8
*
R19
75K
R19
75K
C9
.01u
C9
.01u
C35
10u
C35
10u
R22
*
R22
*
R37
100K
R37
100K R3
47K
R3
47K
D1
S 1
D1
S 1
P1-9
PTT IN
P1-9
PTT IN
U1U1
16
13
42
11
9
4
3
37
8
47
28
24
27
20
18
36
43
46
48
45
41
644
1 2
38 40 39
34
21
22
7
35
17
19
29
25
23
26
12
10
5
15
14
33
32
30
31
49
D7
S 1
D7
S 1
C44
39p
C44
39p
R24
4.7K
R24
4.7K
C47
.22u
C47
.22u
11
P1-11
PROG OUT
P1-11
PROG OUT
C34
.1u
C34
.1u
PAD4
PROG OUT
PAD4
PROG OUT
R16
8.2K
R16
8.2K
D2
S 1
D2
S 1
R8
4.7K
R8
4.7K
R6
47K
R6
47K
PAD7
TRUNK DELAY
PAD7
TRUNK DELAY

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