W2IIHY 3 x 4 SWITCH PLUS User manual

3 x 4
SWITCH PLUS
3 x 1 CONTROLLER / SWITCH
and
1 x 4 ANTENNA SWITCH
OPERATING MANUAL
POWER
TUNE
UNKEY
AMP
AUX
ABC
111
333
222
13
2
RF OUTPUT
LOCAL / REMOTE
A
BC
REMOTE
INPUT SELECT
3x4 Switch Plus
BY W2IHY
R F INPUT
2

-2-
DECEMBER 2011
Julius D. Jones
19 Vanessa Lane
Staatsburg, N.Y. (12580)
[phone]
E-mail: [e-mail]
Home Page: http:// www.w2ihy.com
c 2011 W2IHY, ALL RIGHTS RESERVED
TECHNOLOGIES
W2IHY
TABLE OF CONTENTS
Introduction..........................................................3
3 X 1 Controller/ Switch front panel Controls......4-5
3 X 1 Controller/ Switch rear panel Controls ......6-11
1 X 4 Antenna Switch ........................................12-13
Coax Switch Configurations ..............................14-18
Coax Switch Quick Start .................................... 19-28

-3-
INTRODUCTION
3 x 4 Switch Plus by W2IHY
You asked for it, we listened, and here it is! The 3 X 4 Coax
Switch Plus from W2IHY. W2IHY Technologies has made it
a priority to develop products for the amateur radio
community that not only make your operating experience
more enjoyable but also are easy to use. If you own more
than 1 radio that share the same antennas, amplifier (s),
antenna tuner (s) or other devices connecting a particular
radio to one on several antennas or other devices can be
a complex and stress filled experience. In some cases if a
switch is turned incorrectly or a piece of coax is connected
into the wrong place one or more pieces of equipment
may even be damaged. The 3 X 4 Coax Switch Plus was
designed by W2IHY to make connecting multiple radios to
shared amplifiers, tuners and other gear more simplistic.
Switching from one radio to another radio is as easy as
turning a single knob. Configuring the system is done by
turning rotary switches. There are no computer controlled
menus to configure. If you are looking for a easy way to
switch from one radio to another then the 3 X 4 Coax Switch
Plus is for you.
The 3 X 4 Coax Switch Plus is built with a rugged steel
chassis with very easy to use front panel controls and
very clearly marked rear-panel connections. We feel so
confident that you will be delighted with the 3X 4 Switch Plus
that we offer a 30 day money back, no questions asked
guarantee. The Switch represents the new reference point
for easy to use amateur radio audio equipment.

POWER
TUNE
UNKEY
AMP
AUX
ABC
111
333
222
13
2
RF OUTPUT
LOCAL / REMOTE
A
BC
REMOTE
INPUT SELECT
3x4 Switch Plus
BY W2IHY
R F INPUT
2
3 x 1 CONTROLLER/SWITCH
FRONT PANEL CONTROLS
123
-4-
(1)
(2)
(3)
POWER ON/OFF SWITCH
TUNE SWITCH
LOCAL/REMOTE INPUT SELECT SWITCH AND LEDS
This switch turns the unit’s power on and off. The yellow
LED will illuminate when power is present in the unit.
This switch disables all three (opens 3 amp keying relays),
rear accessible, output Amp Keying RCA connectors. (See
page 10 ). The Red LED will illuminate whenever the
.
This 4 position rotary switch is used to connect one of up
to three radios from the Input A,B,C connectors to the coax,
ALC, amp keying and speaker output connectors. When
this switch is turned to select “A” the radio that is
connected into RF input A will be connected to the 3 x 1
output. The green RF input A LED will illuminate. When this
switch is turned to select “B” the radio that is connected into
RF input B will be connected to the 3 x 1 output. The green
RF input B LED will illuminate. When this switch is turned
to select “C” the radio that is connected into RF input C will
be connected to the 3 x 1 output. The green RF Input C
LED will illuminate. When this switch is turned to Remote
the radio that is connected to the 3 x 1 output is determined
by the rear panel Input Select 5 pin DIN or Input Select
RCA connectors (see pages 7 and 9). The appropriate
green LED will illuminate.
output amplifier Keying RCA connectors are disabled

POWER
TUNE
UNKEY
AMP
AUX
ABC
111
333
222
13
2
RF OUTPUT
LOCAL / REMOTE
A
BC
REMOTE
INPUT SELECT
3x4 Switch Plus
BY W2IHY
R F INPUT
2
5
6
4
These switches direct coax (RF) inputs A, B and C to
the output of the 3 x 1 Controller / Switch. When a
1X4 Antenna Switch (See page 12) is connected to the coax
output of the 3 X 1 Controller / Switch the input of the
1X 4 Antenna Switch is connected to one of 4 outputs of the
1 x 4 Antenna Switch based on these switch positions .
When the AUX switch is turned on, the coax input of the
1X 4 Antenna Switch is connected to the AUXillary coax
output of the switch. The AUX green LED, on the 3 x 1
Controller will illuminate when the AUX switch is on.
When the 1 X 4 Antenna Switch is connected to the 3 X 1
Controller( via a DIN to DIN cable), these LEDs indicate
which 1X 4 Switch RF Output is being selected. The 1 X 4
Switch also has LEDS on it that indicate which output is
being selected. The position of the Local / Remote Select
Switch (see page 4), the Coax Output Switches (see page
5) and Aux Switch determine which 3 x 1 Controller input is
connected to which 1 X 4 Antenna Switch output.
(4)
(5)
(6)
RF OUTPUT SWITCHES
AUX SWITCH
RF OUTPUT LEDS
3 x 1 CONTROLLER/SWITCH
FRONT PANEL CONTROLS
-5-

3 x 1 CONTROLLER/SWITCH
REAR PANEL CONTROLS
9
78
10
(7)
(8)
3 x 1
(9)
(10)
GROUND CONNECTOR
COAX RF INPUTS
3 X 1 COAX RF OUTPUT
POWER IN
Station ground should be connected here.
These three coax inputs are used to connect RF devices
such as transceivers or RF linear amplifiers to the
Controller / Switch. The front panel mounted
Local / Remote Input Switch is used to select which one of
the three RF inputs is connected to the 3 x 1 RF Output.
This coax output is connected to one of three coax inputs
(see text above). Which input is connected to the output
is determined by the position of the front panel mounted
Local / Remote Input Switch.
This 6 pin DIN Connector is used to provide DC power to
the unit. Power requirements are 10 to 15 VDC at 1 AMP
for Powering one Controller and one 1 X 4 Antenna Switch.
The power required for two Controllers and two 1 x 4
Antenna switches is 10 to 15VDC at 2 AMPs.
+ 10 to 15VDC
GND
Power
6 Pin Male DIN
Din connectors shown
on side to be soldered -6-

12
11
(11
(12
)
This 5 Pin DIN is used when the Local / Remote Input
Select Switch is in the remote position. It allows the
selection of the A, B, C coax inputs to be selected remotely.
When the Local / Remote Input Select Switch is in the
Remote position this 5 PIN DIN is active (see page 4).The
following picture and table describe the function of the
connector.
)
This 5 Pin DIN is connected to the 1 X 4 Switch 5 pin DIN
(See Figure 12). This connection switches the coax input
of the 1 X 4 Switch, to one of the 4 coax outputs. Below
is a picture of the cable wiring.
INPUT SELECT
OUT TO 1 X 4 SELECT
3 x 1 CONTROLLER/SWITCH
REAR PANEL CONTROLS
C
B
A
Gnd
Din connectors shown
on side to be soldered
Din connectors shown
on side to be soldered
Connector active when
Local / Remote Input select
is turned to Remote
Shield and Black wire
-7-
5 Pin DIN
Grounded
Input Coax Connector
Connected to Output
None Selected OPEN: A, B or C not to output
A A to Output
B B to Output
C C to Output

13 14
3 x 1 CONTROLLER/SWITCH
REAR PANEL CONTROLS
(13)
This 6 pin DIN connector is used to provide DC power to
another 3 X 1 Controller / switcher and 1 X 4 Switch.
To provide power for a second Controller and second 1 X 4
Switch a cable must be connected from the Power Out
of the 3 x 1 controller providing power to the Power In of
the controller requiring power. Below is a picture of how
the cable must be wired.
(14)
This 5 Pin DIN is used to identify which of the 3 coax
outputs (1,2 or 3) on the 1 X 4 Switch is active. This DIN
output can be connected to of a second switch
when adding an additional level of switching is required.
Below is a picture defining the pins on this 5 Pin DIN
connector.
POWER OUT
OUTPUT SELECT
Input Select
+ 10 to 15VDC
GND (Shield)
Power
6 Pin Male DIN
Din connectors shown
on side to be soldered
Power Out to Power In Cable
-Select Output 1
-Select Output 2
-Select Output 3
GND -8-
Note: Select 1 Output goes to
Select A input. Select 2
Output goes to Select B
Input. Select 3 goes to
Select C Input

L
L
L
L
RRR
R
SPKR INPUT A SPKR INPUT B SPKR INPUT C
SPKR OUTPUT
3 x 1 CONTROLLER/SWITCH
REAR PANEL CONTROLS
ABC
INPUT SELECT
These RCA connectors are used to remotely
replace the function of the Local / Remote
Select Switch. These RCA connectors are
active when the Local / Remote Input Select Switch is in
the Remote position (See page 4).
. The following table describes
the function of these RCA connectors.
These RCA inputs accept
mono or stereo inputs from
up to 3 radios or other
sources. The 3 x 4
Controller will send one of
the three speaker (RCA stereo) inputs to the speaker (RCA
Stereo) output. The RCA speaker output may be connected
to a single mono or stereo speaker system or recording
device.
INPUT SELECT
SPEAKER AUDIO
The internal circuitry in
the controller only allows a single coax input to be
connected to the coax output even when multiple RCA
Input Selects are grounded
3 x 1 CONTROLLER/SWITCH
REAR PANEL CONTROLS
-9-
5 Pin DIN
Grounded
Input Coax Connector
Connected to Output
None Selected OPEN: A, B or C not to output
A A to Output
B B to Output
C C to Output

INPUT AMP KEYING OUTPUT AMP KEYING
ABC123
3 x 1 CONTROLLER/SWITCH
REAR PANEL CONTROLS
These (RCA) amplifier keying
inputs accept linear amplifier
keying connections from up
to 3 radios. The output amplifier keying connectors support
keying up to 3 amplifiers. Each 3 X 1 Controller amplifier
keying outputs is connected to an internal controller relay
contact. The specific output amplifier (RCA) keying contact
that is closed is associated with the RF output that is
being selected by the front panel output select switches.
(see page 5).
The following is an example of how the amplifier keying
works. When RF Output 3 is being selected, on the 3 X 1
controller, the green LED for output 3 will be on. If RF
Output 1 is selected then Output AMP Keying Output 1 will
be shorted. If RF Output 2 is selected then Output AMP
Keying Output 2 will be shorted. If RF Output 3 is selected
then Output AMP Keying Output 3 will be shorted.
These RCA connectors are
used to connect ALC function
between amplifiers and radios.
The radio connected to Input A should connect its ALC input
into (RCA) ALC input A. The radio connected to Input B
should connect its ALC input into (RCA) ALC input B. The
radio connected to Input C should connect its ALC input into
(RCA) ALC input C. The amplifier connected to 1 X 4 Antenna
Switch Output 1 should connect its ALC to ( RCA) Output ALC
1.The amplifier connected to 1 X 4 Antenna Switch Output 2
should connect its ALC output to (RCA) Output ALC 2. The
amplifier connected to 1 X 4 Antenna Switch Output 3 should
connect its ALC output to (RCA) Output ALC 3. Which one of
three RCA ALC outputs a given ALC input is connected is
associated with the RF output that is being selected by the
front panel RF Output select switches. (see page 5).
Linear Amplifier Keying
ALC CONTROL
ABC
INPUT ALC OUTPUT ALC
123
-10-

-11-
3 x 1 CONTROLLER/SWITCH
REAR PANEL CONTROLS
SWR IN
SWR OUT
The SWR IN RCA must be connected to
the SWR Out RCA if no external device is connected to
disable amplifier keying.
Amplifier Key Line
These RCA connectors are used to disable all three
(opens 3 amp keying relays), rear accessible, output
Amp Keying RCA connectors. (See page 10 ). The
Red LED, above the front panel tune switch will
illuminate whenever the
. When the SWR Out RCA
connector is not shorted all 3 output Amp keying RCA
connectors will be disabled. Devices like a SWR meter,
which has circuitry to disable linear amplifier keying, would
connect here.
output amplifier Keying RCA
connectors are disabled

1 X 4 ANTENNA SWITCH
15 16 17
(15
(16)
(17)
)
Station ground should be connected to this connector.
Grounding this point grounds any of the four coax
connectors that are not connected to the Input coax
connector.
This Input Coax RF Connector may be connected
to one of 4 Output Coax RF Connectors. Connection
of the Input to the output is done using the control 5 Pin
DIN connection (see page 13). This unit is capable of
handling up to 1500 watts PEP of RF.
These 4 coax RF connectors are used to connect
antennas or other external devices to the Input Coax
RF Connector. Switching the input connector to one
of 4 Output connectors is done using the control
5 Pin DIN connection (see page 13). This unit is capable
of handling up to 1500 watts PEP of RF.
GROUND CONNECTOR
INPUT COAX RF CONNECTOR
OUTPUT COAX CONNECTORS
-12-

1 X 4 ANTENNA SWITCH
19
19
18
(18
(19)
)
This 5 Pin DIN switches the coax input of the 1 X 4
Switch to one of the 4 coax outputs. The 1 X 4
Antenna Switch Control Connector may be connected to
the 3 X 1 Controller / Switch 1 X4 Select 5 pin DIN
output. (See page 7). Below is a picture that defines the
function of the pins on the 5 PIN DIN.
These LEDs are wired to indicate which coax output is
connected to the coax input.
CONTROL CONNECTOR
OUTPUT COAX LEDS
Din connectors shown
on side to be soldered
- Select Coax Output 1
- Select Coax Output 2
- Select Coax Output 3
+12 Volts DC
- Select AUX Coax Output
-13-

COAX SWITCH CONFIGURATIONS
Using one or more W2IHY 3 X 4 Controllers will greatly
simplify operating amateur radio stations with multiple
radios, one or more linear amplifiers and multiple antennas.
The W2IHY 3 X 4 Coax Switch may be configured in
many ways. The following are 9 typical configurations.
Configuration 1
This configuration connects up to 3 radios to a single linear
amplifier / tuner. The tuner, via the 1 X4 Antenna Switch can
be configured to be connected to up to four different outputs.
Configuration 2
This configurations connects up to 3 radios to a single linear
amplifier / tuner, The amp / tuner output(s) are connected
to antennas, antenna switches or other devices.
MULTIPLE RADIOS/SINGLE AMP/SINGLE TUNER/
MULTIPLE OUTPUTS
MULTIPLE RADIOS/SINGLE AMP/SINGLE TUNER/
SINGLE OUTPUT
-14-
Radio
A
Output 1
Output Select
out 1 x 4 select
3 x 1 Controller/Switch
BC
Radio
Radio
3x1
AMP.
Meter
Tuner
Input
Select
Radio
A
Output 1
Output 2
Output 3
Output Aux
1
control
out 1 x 4 select
Output Select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
Radio
Radio
1x4
3x1
AMP.
Meter
Tuner
Input
Select

COAX SWITCH CONFIGURATIONS
A
Output 1
Output 2
Output 3
Output Aux
1
control
out 1 x 4 select
Output Select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
1x4
3x1
Meter
Tuner
Radio AMP
Radio AMP
Radio AMP
Configuration 3
This configurations connects up to 3 radios each with a
linear amplifier to a single tuner. The 1 X4 Antenna Switch can
be configured to be connected to up to four different outputs.
Configuration 4
This configurations connects up to 3 radios each with a
linear amplifier / tuner. The 1 X4 Antenna Switch can be
configured to be connected to up to four different outputs.
MULTIPLE RADIOS WITH AMPS CONNECTED/
SINGLE TUNER/MULTIPLE OUTPUTS
MULTIPLE RADIOS WITH AMPLIFIERS AND TUNERS
MULTIPLE OUTPUTS
Radio
Radio
Radio
Meter Meter Meter
Tuner Tuner Tuner
AMP.
AMP.
AMP.
A
Output 1
Output 2
Output 3
Output Aux
1
control
out 1 x 4 select
Input
Select
3 x 1 Controller/Switch
1 X 4 Switch
23A
U X
BC
1x4
3x1
-15 -
Input
Select

COAX SWITCH CONFIGURATIONS
Configuration 5
The front
panel AUX switch may not be used, in this configuration, to
connect an external antenna or dummy load to the AUX
AUX OUTPUT for use by the connected amplifiers.
This configuration requires one 3 X1 controllers and two
1 X4 Coax Switches. This configuration supports
connecting any one up to 3 radios to any one of 3 amplifiers.
Any of the 3 amplifiers may be configured to use a single
tuner. The selected amplifier and/ tuner may be connected to
a single antenna, antenna switches or other device.
MULTIPLE RADIOS/MULTIPLE AMPS/SINGLE TUNER/
SINGLE OUTPUT
Configuration 6
This configurations connects up to 3 radios to any one of 3
linear amplifiers with their own tuners. The output(s) of each
tuner is connected to an antenna, antenna switches or other
device.
MULTIPLE RADIOS/MULTIPLE AMPS/MULTIPLE TUNERS/
OUTPUTS CONNECTED TO TUNERS
Radio
A
1
control
Output Select
out 1 x 4 select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
Radio
Radio
1x4
3x1
Amp
1
Output Aux
Output
control
1 X 4 Switch
A
U
X
23
Amp
Amp
1x4
Meter
Tuner
Input
Select
Radio
A
Output 1
Output 2
Output 3
Output Aux
1
control
out 1 x 4 select Output
Select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
Radio
Radio
1x4
3x1
Meter Meter Meter
Tuner Tuner Tuner
AMP.
AMP.
AMP.
Input
Select
-16 -

COAX SWITCH CONFIGURATIONS
Configuration 7
This configuration requires two 3 X1 controllers and two
1 X4 Coax Switches. This configuration supports
connecting any one up to 3 radios to any one of 3 amplifiers.
Any of the 3 amplifiers may be configured to use a single
tuner. The tuner may be configured to connect to any one
of 4 different outputs.
Configuration 8
This configuration requires two 3 X1 controllers and one
1 X4 Antenna Switch. This configuration supports
connecting any one up to 3 radios to any one of 3 amplifiers.
Any of the 3 amplifiers may be configured to use a single
tuner. The output(s) of the tuner may be connected to
antennas, antenna switches or other devices.
MULTIPLE RADIOS/MULTIPLE AMPS/SINGLE TUNER/
MULTIPLE OUTPUTS
MULTIPLE RADIOS/MULTIPLE AMPS/SINGLE TUNER
SINGLE OUTPUT
Radio
A
1
control
Output Select
out 1 x 4 select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
Radio
Radio
1x4
3x1
Amp
A
Output 1
Output 2
Output 3
Output Aux
Output Aux
1
control
out 1 x 4 select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
Amp
Amp
1x4
3x1
Meter
Tuner
Input
Select
Input
Select
Radio
A
1
control
Output Select
out 1 x 4 select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
Radio
Radio
1x4
3x1
Amp
A
Output Aux
Output
out 1 x 4 select
3 x 1 Controller/Switch
BC
Amp
Amp
3x1
Meter
Tuner
Input
Select
Input
Select
-17 -

COAX SWITCH CONFIGURATIONS
Configuration 9
This configuration requires two 3 X1 controllers and two
1 X4 Antenna Switches. This configuration supports connecting
any one up to 3 radios to any one of 3 amplifiers where each
may have a tuner connected to it. The selected amplifier /
tuner may be connected to any one of 4 different outputs
MULTIPLE RADIOS/MULTIPLE AMPS/MULTIPLE TUNERS
MULTIPLE OUTPUTS
Configuration 10
This configuration requires two 3 X1 controllers and one
1 X4 Coax Switch. This configuration supports connecting
any one up to 3 radios to any one of 3 amplifiers. Each
amplifier may have a tuner connected to it. The selected
amplifier / tuner, using a 3 x 1 controller may be connected to
a single antenna, antenna switches or other device.
MULTIPLE RADIOS/MULTIPLE AMPS/MULTIPLE TUNERS
SINGLE OUTPUT
Radio
A
Output Aux
1
control
out 1 x 4 select
Output Select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
Radio
Radio
1x4
3x1
Meter Meter Meter
Tuner Tuner Tuner
AMP.
AMP.
AMP.
A
Output 1
Output 2
Output 3
Output Aux
1
control
out 1 x 4 select
Input
Select
Input
Select
3 x 1 Controller/Switch
1 X 4 Switch
23A
U X
BC
1x4
3x1
Radio
A
Output Aux
1
control
Output Select
out 1 x 4 select
3 x 1 Controller/Switch 1 X 4 Switch
23A
U X
BC
Radio
Radio
1x4
3x1
Meter Meter Meter
Tuner Tuner Tuner
AMP.
AMP.
AMP.
A
Output
Input
Select
Input
Select
out 1 x 4 select
3 x 1 Controller/Switch
BC
3x1
-18 -

COAX SWITCH QUICK START
POWER AND 1X4 CONTROL
CABLE CONNECTIONS
Connect a 10-15 volt DC power source capable of 1 amp,
to the 3X 1 Controller. This power source will provide
power for the 3 x1 controller and 1 x 4 Switch. Connect a
cable between the 3 X1 Controller and 1 X 4 Switch. This
connection switches the coax input of the 1 X 4 Switch
to one of the 4 coax outputs. Below is a picture of the
cable wiring.
+ 10 to 15VDC @ 1A
GND
Power
6 Pin Male DIN
Din connectors shown
on side to be soldered
10-15 volt DC
Power cube or
power supply
3 x 4 to 1X4 Control Cable
Din connectors shown
on side to be soldered
Shield and Black wire
-19 -

Output 3
Ant or other
Output AUX
Ant or other
Output 2
Ant or other
Output 1
Ant or other
RADIO/ AMP
RF OUTPUT
POWER/ SWR
METER
LINEAR
AMPLIFIER ANTENNA
TUNER
GND
GND
A
C
B
RADIO/ AMP
RF OUTPUT
RADIO/ AMP
RF OUTPUT
COAX SWITCH QUICK START
RF CONNECTIONS
Connect your radios/ RF devices as shown in the picture
below. A SWR / watt meter, RF amplifier and antenna
tuner may be connected to the coax input of the 3 X 1
Controller. If the 1X 4 Coax switch is to be used with the
3 X1 controller connect the appropriate length coax as
shown below.
-20 -