Elecraft K-2_XV_serie User guide

Elecraft Transverter Models XV50, XV144, XV222, XV432

Owner’s Manual

Rev C, April 2006

Copyright © 2006, Eleraft; All Rights Reserved

Table of Contents

INTRODUCTION.................................................................................................................................................................... 1

Features

Using an Elecraft K2 as the I.F. Transceiver................................................................................................................................................................ 1

Customer Service and Support

Repair Service .............................................................................................................................................................................................................. 2

........................................................................................................................................................................................................................ 1

..................................................................................................................................................................................... 1

SPECIFICATIONS.................................................................................................................................................................3

General
Transmitter
Receiver

......................................................................................................................................................................................................................... 3

.................................................................................................................................................................................................................... 3

........................................................................................................................................................................................................................ 3

INSTALLATION.....................................................................................................................................................................4

Quick-Start Installation..................................................................................................................................................................................................4

Installation Options ....................................................................................................................................................................................................... 4

Special Notes for Elecraft K2 Owners .......................................................................................................................................................................... 4

Elecraft K2 With K60XV Adapter.................................................................................................................................................................................. 5

Elecraft K2 With No K60XV .......................................................................................................................................................................................... 6

Non-Elecraft 28 MHz Rig – Separate Transmit and Receive RF Connections............................................................................................................ 7

Non-Elecraft 28 MHz Rig – Single Transmit and Receive RF Connection................................................................................................................... 8

Transverter Control Cable for Elecraft K2 or K2/100....................................................................................................................................................9

Daisy-Chaining Multiple Transverters.........................................................................................................................................................................12

Using an External Receive Preamplifier..................................................................................................................................................................... 13

Using an External Power Amplifier............................................................................................................................................................................. 13

OPERATION........................................................................................................................................................................14

Cautions to Avoid Spurious Emissions From Your Station......................................................................................................................................... 14

Turning the Transverter On......................................................................................................................................................................................... 14

Power Output Control ................................................................................................................................................................................................. 14

Local Oscillator Power Control ................................................................................................................................................................................... 14

I.F. Overload Condition............................................................................................................................................................................................... 15

Transmit-Receive Switching Delay............................................................................................................................................................................. 15

Front Panel Display Control........................................................................................................................................................................................ 15

OPTIONS AND MODIFICATIONS.......................................................................................................................................16

Tools Required............................................................................................................................................................................................................ 16

Optional Crystal Oven.................................................................................................................................................................................................17

Changing Between Split and Common Antennas ...................................................................................................................................................... 18

Reducing Receive Gain to Preserve System Dynamic Range................................................................................................................................... 19

Optional Feet and Bail Attachment............................................................................................................................................................................. 19

CIRCUIT DESCRIPTION..................................................................................................................................................... 20

Signal Flow ................................................................................................................................................................................................................. 20

Circuit Details..............................................................................................................................................................................................................22

ALIGNMENT AND TEST..................................................................................................................................................... 25

Part I - Initial Setup ..................................................................................................................................................................................................... 25

Part II – Power Control................................................................................................................................................................................................ 26

Part III - Local Oscillator Level.................................................................................................................................................................................... 26

Part IV – Receiver RF Amplifier Bias Adjustment....................................................................................................................................................... 27

Part V – RF Power Amplifier Quiescent Current Adjustment. .................................................................................................................................... 27

Part VI – Filter Alignment............................................................................................................................................................................................ 27

Part VII – Power Display LED Calibration................................................................................................................................................................... 28

Part VIII – Receiver Input Alignment........................................................................................................................................................................... 28

Part IX - Overload Protection Circuit Test................................................................................................................................................................... 29

Local Oscillator Frequency Calibration (Optional)...................................................................................................................................................... 30

SCHEMATICS AND PARTS PLACEMENT DIAGRAMS.....................................................................................Appendix A

TROUBLESHOOTING..........................................................................................................................................Appendix B

JUMPER AND DIP SWITCH SETTINGS..............................................................................................................Appendix C

Introduction

The Elecraft XV Series high-performance transverters may be used with
any transceiver or transmitter/receiver pair that covers the 10 meter band.
Separate transverters are offered for the following bands:

• Model XV50: 50 to 52 MHz.

• Model XV144: 144 to 146 MHz.

• Model XV222: 222 to 224 MHz.

• Model XV432: 432 to 436 MHz.

Features

I.F. connections to the transceiver can be either single-port, using a single
RF cable, or dual port, using separate receive and transmit cables.

The transverters include an adjustable input level control that will provide
full output from the transverter with I.F. power levels as low as 0.01
watts up to 8 watts. Full protection against accidental high-power
transmit of up to 100 watts into the I.F. port is also included.

The receiver features a very low noise figure with a PHEMT RF stage for
weak-signal work. Relays are used for transmit/receive switching to
avoid receive performance degradation by diode switches in the signal
path.

The transmitter is conservatively rated at 20 watts output PEP SSB, CW
or data modes. The RF output is displayed on the front panel with a 10­segment LED bargraph. The LED display may be switched between dot
or bar modes. When used with an Elecraft K2 transceiver, the bargraph
has two brightness modes.

Using an Elecraft K2 as the I.F. Transceiver

While the transverters will work with nearly any HF transceiver, using
them with our Elecraft K2 (or K2/100) offers additional benefits. The
high-performance K2 provides:

• Low noise, single-conversion, wide dynamic range receiver.

• Four adjustable I.F. crystal filter bandwidths per mode.

• Automatic transverter band switching with individual menu-

selected output power levels.

• Direct display of the transverter operating frequency to 10 Hz,

including per-band adjustable offsets of +/- 9.99 kHz.

• Four RIT ranges from +/- 0.6 to +/- 4.8 kHz.

We recommend that K2’s with serial numbers 3445 and below be
equipped with Elecraft-approved modifications that reduce spurious
responses and enhance frequency stability. See Special Notes for Elecraft

K2 Owners on page 4.

Customer Service and Support

Whether you build the kit or buy a factory-built transverter, you’ll find a
wealth of information on our web site at
materials there you’ll find the latest application notes, photographs, any
updates to this manual, and information on new products. We also have a
popular e-mail forum. You can sign up for it from the web site. It's a
great way to interact with other Elecraft owners, exchange ideas and find
answers to many questions.

www.elecraft.com. Among the

The transverters are housed in attractive, low-profile enclosures that may
be stacked for multi-band operation. An illuminated band label identifies
the transverter in use. Several transverters may be connected to a single
transceiver. Internal relays select only the transverter for the band in use,
avoiding the need to switch I.F. cables.

You can also get assistance by telephone or by sending an e-mail to

[e-mail]. E-mail is preferable because it gives us a written

record of your question. Telephone assistance is available from 9 A.M. to
5 P.M. Pacific time, Monday through Friday (except US Holidays) at
831-662-8345.

- 1 -

Repair Service

Contact Elecraft before returning your equipment to obtain the current
information on repair fees.

Elecraft 1-Year Limited Warranty

To ship the unit, first seal it in a plastic bag to protect the finish. Use a
sturdy packing carton with at least 3-in (8 cm) of foam or shredded paper
on all sides. Seal the package with reinforced tape. (Neither Elecraft or
the carrier will accept liability for damage due to improper packaging.)

If building a kit, complete the assembly, carefully following all instructions in
the manual, before requesting warranty service.

What is covered: During the first year after the date of first consumer purchase,
Elecraft will replace defective parts free of charge (post-paid). We will also
correct any malfunction caused by defective parts and materials. You must send
the unit at your expense to Elecraft. We will pay return shipping.

What is not covered: This warranty does not cover correction of assembly
errors or misalignment; repair of damage caused by misuse, negligence or
builder modifications; or any performance malfunctions involving non-Elecraft
accessory equipment. The use of acid-core solder or any corrosive or
conductive flux or solvent will void this warranty in its entirety. Also
not covered is any reimbursement for loss of use, inconvenience, customer
assembly or alignment time, or cost of unauthorized service.

Limitation of incidental or consequential damages: This warranty does not
extend to non-Elecraft equipment or components used in conjunction with our
products. Any such repair or replacement is the responsibility of the customer.
Elecraft will not be liable for any special, indirect, incidental or consequential
damages, including but not limited to any loss of businesses or profits.

- 2 -

Specifications

Numeric values are typical; your results may be somewhat different.
Specifications may be affected by the options or accessories chosen. See

www.elecraft.com for details about options and accessories currently

available. Specifications are subject to change without notice.

General

Size
Cabinet: 1.3” H x 7.8” W x 8.3” D
(3.3 x 19.8 x 21 cm)

Overall: 1.5 H x 7.8 W x 9.5 D incl. feet and connectors
(3.8 x 19.8 x 21 cm)

Weight: 2.5 lbs (1.1 kg)
Supply Voltage: 13.8 VDC
Current Drain:

Receive: 250 mA (typical)

Transmit

Frequency Ranges:
XV50: 50 – 52 MHz
XV144: 144 – 146 MHz
XV222: 222 – 224 MHz
XV432: 432 – 436 MHz

T/R Switching Time: 3 ms (typical)

T/R Key Input: Ground for transmit: must pull 5 volt

I.F. Overload Protection: Survives 100 watts RF input at the I.F.

1

: 6 A typical for XV432, 4 A typical for XV50,

XV144, XV222

logic level to within 0.5 volts of ground
at < 1 ma

Port without damage with transverter
un-keyed (in receive mode)

Amplifier Key Output: Ground on transmit: 200 VDC at 1 A

maximum

Connectors:

K2 Interface: DB9
Keying Line Input: RCA
Keying Line Output: RCA
I.F. In/Out: BNC
Aux (Rx-Only Ant): BNC
Antenna: SO-239 (UHF) on XV50
Type N on XV144, XV222 & XV432

Transmitter

Power Out (50-ohm load): 20 watts SSB/CW
10 watts continuous carrier modes

Minimum Supply
Voltage Recommended: 12 VDC

Operating Modes: CW, SSB, AM, FM, Digital Modes

I.F. Input Frequency Range: 28 – 30 MHz (XV50, 144 & 222)
28 – 32 MHz (XV432)

I.F. Input Power Range: 0.01 mW (-20 dBm) to

8 watts (+ 39 dBm)

Harmonic Content: < - 60 dBc at 20 watts output

Receiver

Noise Figure: < 1 dB
Conversion Gain: 25 dB typical for XV50, XV144,

XV222, 20 dB typical for XV432

Image Rejection: > 60 dB

1

Current varies with supply voltage, load impedance and power output.

3rd-Order Intercept: +20 dBm (typical)

- 3 -

Installation

Your transverter is designed to integrate closely with the Elecraft K2
transceiver. Also, it will perform well with a variety of 28 MHz rigs and
connection setups. Start with the Quick-Start Installation that matches
your setup. Once you have the transverter working as desired, refer to the
Installation Options below for ways you might better integrate the
transverter into your station.

Quick-Start Installation

Choose the setup you wish to use from the list below and go to that
procedure for your initial setup. If you aren’t sure which to choose, check
the drawings associated with each of the following procedures to see
which matches the 28 MHz rig you are using with your transverter.

1. Elecraft K2 with K60XV Adapter. Go to page 5.

2. Elecraft K2 With No K60XV. Go to page 6.

3. Non-Elecraft 28 MHz Rig – Separate Transmit and Receive RF

Connections. Go to page 7.

4. Non-Elecraft 28 MHz Rig – Single Transmit and Receive RF

Connection. Go to page 8.

Installation Options

Special Notes for Elecraft K2 Owners

Your K2 must be equipped with:

• KIO2 Interface. Either the stand-alone KIO2 interface for the

QRP version of the K2, or the KIO2 interface built into the
KPA100 amplifier is suitable.

• Revision 2 (or later) Firmware. To see your firmware version,

hold any front-panel button while turning on the power to your
K2. Upgraded firmware is available from Elecraft.

K2’s with serial numbers 3445 and earlier should be equipped with the
following Elecraft-approved modifications.

• 10 Meter Bandpass Filter and VFO/ALC modification, applicable

to all K2’s S/N 2999 and down. This modification reduces
spurious signals. It is very strongly recommended.

• K2 BFO Toroid & PLL Ref Osc Xtal Upgrade, applicable to

K2’s S/N 2999 and down. This modification substantially
reduces frequency drift in the K2’s reference oscillator and BFO.

• Temperature-Compensated PLL Reference Upgrade, applicable

to K2’s S/N 3445 and down. This modification further reduces
the K2’s reference oscillator frequency drift.

We recommend that you first use the appropriate Quick-Start Installation
and verify that your transverter is operating as expected. Once that has
been done, the following optional setup configurations may help you
better integrate the transverter into your station:

1. Daisy-Chaining Multiple Transverters. Using multiple

transverters without swapping cables. See page 12.

2. Using an External Receive Preamplifier. Using the transverter

with an antenna-mounted preamplifier to optimize noise figure
with long feed lines. See page 13.

3. Using an External Power Amplifier. Controlling an external

power amplifier from the transverter. See page 13.

The Elecraft K60XV 60-M and Transverter Adapter is highly
recommended for use with the transverters. This adapter provides separate
(split) receive transmit connections to the transverter. In addition, it
provides a low-level (1 milliwatt) transmit drive that is independent of the
K2 power amplifier stages. The adapter eliminates the need to switch
between the transverter and an external antenna when using the K2 as both
the transverter I.F. and as an H.F. rig.

- 4 -

Elecraft K2 With K60XV Adapter

This setup uses the low-level transmit and separate receiver connections
provided by the K60XV Adapter. The K2 must be equipped with an
auxiliary input/output either through a KIO2 interface or the one built into
the KPA100 amplifier.

TO ANTENNA - 50 OHM, SWR < 2:1

TYPE N MALE (XV144, XV222)
PL259 (XV50)

ANT

TRANSVERTER

TXin/IF1

MALE

BNC

50 OHM

COAX

MALE

PHONO

OUT IN

XVTR

RXout/IF2

CONTROL

AUX I/O

DB-9

MALE

TRANSVERTER

CONTROL

CABLE

(See Text)

DB-9

MALE

Refer to the following table and set the DIP switches on the RF PCB

for the TRN number you assigned.

TRN

1
2
3
4
5
6
7
8

1 2 3 4

ON

OFF
OFF OFF
OFF OFF OFF
OFF
OFF
OFF OFF
OFF

DIP SWITCH POSITIONS

OFF OFF OFF

ON

OFF OFF

ON

OFF

ON
ON ON
ON

OFF

OFF

ON

ON ON

ON ON ON

Place 2-pin shorting blocks on the transverter RF PCB jumpers

shown below:

_ JP1: 1-2 _ JP2: 2-3 _ JP3: 1-2
_ JP4: 1-2 _ JP5: 2-3 _ JP6: 2-3
_ JP9: 1-2

Place a shorting block on 2-pin jumper JP8 (near the ON/OFF switch

on the RF PCB) and verify that there is no shorting block on JP7.

K2 WITH K60XV

& KIO2 OR KPA100

Figure 1. Connecting the Transverter to an Elecraft K2 With a

K60XV Interface.

Refer to the Transverter Operation section of the Elecraft K60XV

60-M and Transverter Adapter Assembly and Operating Instructions and

use the K2’s MENU commands to configure the K60XV for operation
with the transverter:

_ Note the TRN number you have set up for the transverter.
_ Set the maximum output to: Out L 1.00 (1.00 milliwatts).

Locate front panel PCB 2-pin jumper, JP1, at the end of the socket­mounted controller IC. Verify that there is no shorting block on this
jumper. (Do not confuse this JP1 with JP1 on the RF PCB.)

Refer to Transverter Control Cable for Elecraft K2 or K2/100 on
page 9 to make up a new transverter control cable or to add connections
for the transverter to your existing Aux I/O cable.

Connect the cables as shown in Figure 1.

Connect a 13.8 VDC, 6 ampere power supply to the transverter using
a cable equipped with an Anderson Powerpole® connector.

- 5 -

Elecraft K2 With No K60XV

This setup uses the K2’s antenna port for both the transmit and receive
signal path to the transverter. The K2 must be equipped with an auxiliary
input/output either through a KIO2 interface or the one built into the
KPA100 amplifier.

TO ANTENNA - 50 OHM, SWR < 2:1

TYPE N MALE (XV144, XV222)
PL259 (XV50)

ANT

TRANSVERTER

TXin/IF1

MALE

BNC

50 OHM

COAX

BNC (K2) OR
PL259 (K2/100)

CONTROL

TRANSVERTER

DB-9

MALE

CONTROL

CABLE

(See Text)

DB-9

MALE

Refer to the following table and set the DIP switches on the RF PCB

for the TRN number you assigned.

TRN

1
2
3
4
5
6
7
8

1 2 3 4

ON

OFF
OFF OFF
OFF OFF OFF
OFF
OFF
OFF OFF
OFF

DIP SWITCH POSITIONS

OFF OFF OFF

ON

OFF OFF

ON

OFF

ON
ON ON
ON

OFF

OFF

ON

ON ON

ON ON ON

Place 2-pin shorting blocks on transverter RF PCB jumpers shown

below:

_ JP1: 2-3 _ JP4: 2-3
_ JP2: 1-2 _ JP5: 1-2
_ JP3: 2-3 _ JP6: 1-2
_ JP9: 1-2

ANTENNA

K2 WITH

KIO2 OR KPA1 00

AUX I/O

Figure 2. Connecting the transverter to an Elecraft K2 without a

K60XV interface

.

Refer to your K2 Operating Manual and the instructions that came
with your current firmware and use the K2’s MENU commands to do the
following.

_ Note the TRN number you have set up for the transverter.
_ If using a K2/100, set the MENU command for PA OFF.

Place a shorting block on 2-pin jumper JP8 (near the ON/OFF switch

on the RF PCB) and verify that there is no shorting block on JP7.

Locate front panel PCB 2-pin jumper, JP1, at the end of the socket­mounted controller IC. Verify that there is no shorting block on this
jumper. (Do not confuse this JP1 with JP1 on the RF PCB.)

Refer to Transverter Control Cable for Elecraft K2 or K2/100 on
page 9 to make up a new transverter control cable or to add connections
for the transverter to your existing Aux I/O cable.

Connect the cables as shown in Figure 2.

Connect a 13.8 VDC, 6 ampere power supply to the transverter using
a cable equipped with an Anderson connector

- 6 -

Non-Elecraft 28 MHz Rig – Separate Transmit and

1

Receive RF Connections

This setup is for any 28 MHz rig capable of providing separate transmit
and receive connections. The transmitter must be capable of providing a
variable RF output of up to 1 milliwatt, 251 milliwatts or 5 watts, and
provide a key line that will ground a 5 volt logic level on transmit.

Place 2-pin shorting blocks on the transverter RF PCB jumpers

shown below:

_ JP1: 1-2 _ JP2: 2-3 _ JP9: 1-2

From the options below, choose the power output from your 28 MHz
rig that will drive the transverter to full output. Place 2-pin shorting
blocks on the corresponding RF PCB jumpers as shown:

TO ANTENNA - 50 OHM, SWR < 2:

TYPE N MALE (XV144, XV222)
PL259 (XV50)

ANT

TRANSVERTER

KEY IN

MALE

PHONO

2-WIRE

SHIELDED

CABLE

28 MHz XMIT

TXin/IF1

SEPARATE TRANSMIT

& RECEIVE ANTENNA

RXout/IF2

MALE

BNC

50 OHM

COAX

28 MHz

RECEIVE

28 MHZ RIG WITH

CONNECTIONS

Figure 3. Connecting the Transverter to a Non-Elecraft 28-MHz Rig
with Separate Transmit and Receive RF Paths.

On the transverter RF PCB, set all four DIP switches to OFF.

28 MHZ DRIVE LEVEL FOR

FULL TRANSVERTER OUTPUT

JP3 JP4 JP5 JP6

1 milliwatt 1-2 1-2 2-3 2-3
251 milliwatts 1-2 1-2 1-2 1-2
5 watts 2-3 2-3 1-2 1-2

i

Take care not to exceed the maximum power level you set up

the transverter for in the previous step. Doing so may result in
damage to the transverter.

Place a shorting block on 2-pin jumper JP7 (near the ON/OFF switch
on the RF PCB) and verify that there is no shorting block no JP8.

Place a shorting block on front panel PCB 2-pin jumper JP1 at the
end of the socket-mounted controller IC. (Do not confuse this JP1 with
three-pin jumper JP1 on the RF PCB.)

Connect the cables as shown in Figure 3.

Connect a 13.8 VDC, 6 ampere power supply to the transverter using
the cable equipped with an Anderson connector

- 7 -

Non-Elecraft 28 MHz Rig – Single Transmit and Receive
RF Connection

This setup is for any 28 MHz rig with a single RF port for transmit and
receive. The transmitter must be capable of providing a variable RF power
output of up to 1 milliwatt, 251 milliwatts or 5 watts, and provide a key
line that will ground a 5 volt logic level on transmit.

TO ANTENNA - 50 OHM, SWR < 2:1

TYPE N MALE (XV144, XV222)
PL259 (XV50)

ANT

TRANSVERTER

TXin/IF1

50 OHM

COAX

TRANSMIT OUT

&

RECEIVE IN

MALE BNC

28 MHZ RIG WITH

SINGLE TRANSMIT

& RECEIVE ANTENNA

CONNECTION

Figure 4. Connecting the Transverter to a Non-Elecraft 28-MHz Rig

with a Single Transmit and Receive RF Path.

KEY IN

MALE

PHONO

2-WIRE

SHIELDED

CABLE

Place 2-pin shorting blocks on transverter RF PCB jumpers shown

below:

_ JP1: 2-3 _ JP2: 1-2 _ JP9: 1-2

From the options below, choose the power output from your 28 MHz
rig that will drive the transverter to full output. Place 2-pin shorting blocks
on the corresponding RF PCB jumpers as shown:

28 MHZ DRIVE LEVEL FOR

FULL TRANSVERTER OUTPUT

1 milliwatt 1-2 1-2 2-3 2-3
251 milliwatts 1-2 1-2 1-2 1-2
5 watts 2-3 2-3 1-2 1-2

i

Take care not to exceed the maximum power level you set up

JP3 JP4 JP5 JP6

the transverter for in the previous step. Doing so may result in
damage to the transverter.

Place a shorting block on 2-pin jumper JP7 (near the ON/OFF switch
on the RF PCB) and verify that there is no shorting block on JP8.

Place a shorting block on front panel PCB 2-pin jumper JP1 at the
end of the socket-mounted controller IC. (Do not confuse this JP1 with
three-pin jumper JP1 on the RF PCB.)

Connect the cables as shown in Figure 4.

Connect a 13.8 VDC, 6 ampere power supply to the transverter using
the cable equipped with an Anderson connector.

On the transverter RF PCB, set all four DIP switches to OFF.

- 8 -

Transverter Control Cable for Elecraft K2 or K2/100

Your transverter was supplied with a DB-9 cable connector and a length
of multi-conductor wire for making up the transverter control interface
cable for use with an Elecraft K2 or K2/100. You will need the DB-9
connector that came with your KIO1 or KPA100 to complete the cable.
Follow the procedure below to make up your control cable.

If you are already using the K2 Aux I/O port to control a KPA100 ATU or
to communicate with your personal computer, you may add the transverter
control cable to the existing cable at the DB-9 connector so you won’t
need to switch connectors when using the transverter (see Figure 7).

Cut a length of the 4-conductor cable to suit the needs of your station
layout. Keep the cable length as short as practical. A length of 2’ (60 cm)
is recommended. Longer lengths may be used, but you may need to supply
a more heavily-shielded cable to avoid RF interference.

If you are integrating two or more transverters into the station at this
time, cut a length of cable to reach from the first transverter to the second
transverter in a daisy-chain arrangement (see Figure 7).

Solder the wires to the male DB-9 connector supplied with your

transverter as shown in Figure 5.

i

Follow the color codes shown below when wiring the
connector. The same color code is used in the control interface cables
for other Elecraft equipment. Keeping a consistent color code will
help avoid mistakes and make troubleshooting easier.

GRN

BARE

K2 OR
K2/100
(MALE)

5

9

4

8

3

7

2

6

1

TRANSVERTER

CONTROL

(J6 - MALE)

5

9

8

7
6

BLK

RED

GRN

1

BARE

BLK

RED

Figure 5. K2 Control Cable Wiring.

Remove 1/2” (12 mm) of the jacket from the cable at each end. Be

very careful not to nick the individual wires.

Peel back and cut away the foil shield. Do not cut the bare ground

wire.

Cut the white wire where it exits the jacket. It will not be used.
Strip of 3/16” (5 mm) of insulation from the black, red and green

wires.

Twist the strands of each wire together. If you are daisy-chaining
cables, twist the ends of leads with like colors together. Tin lightly with
solder.

If you have not built an RS-232 or control cable to connect other
equipment to your K2, you should have an unused DB-9 male connector
that was supplied with the KI02 or KPA100 kit. In that case, wire the
connector as shown in Figure 5. If you have wired the cable for the K2
and other accessories already, add the transverter extension(s) to it as
shown in Figure 7.

- 9 -

Attach the connector housing to the transverter connector(s) as shown
in Figure 6. The cable clamp has enough capacity to handle up to three
cables. Before closing the housing, be sure that:

The clamp holds the cables securely, so that strain cannot be
placed on the soldered joints.

The jack screws are positioned between the stops as shown so the
flanges on the screws prevent the threaded ends from extending
more than about 1/8” (3 mm) beyond the housing.

This completes your transverter control cable. If, in the future, you chose
to add more transverters, add a KAT100 ATU interface to your H.F.
station, or connect your K2 to a personal computer, you can add the
connections to your existing cable as shown in Figure 7.

THE JACKSCREW FLANGES MUST BE POSITIONED HERE.
IF THEY ARE POSITIONED FORWARD BETWEEN THE
METAL CONNECTOR AND THE PLASTIC BODY,
THE CONNECTOR WILL NOT MATE PROPERLY
PRODUCING INTERMITTENT OR OPEN CONNECTIONS.

Figure 6. Installing DB-9 Connector Housing.

- 10 -

TRANSVERTER

(MALE) (MALE)

K2 OR K2/100

PC

(FEMALE)

TO ADDITIONAL

TRANSVERTERS

DB-9

MALE

CONTROL

TRANSVERTER

DB-9

MALE

KAT100

ATU

(MALE)

TRANSVERTER CONTROL

CABLE

OPTIONAL KAT100 CONTROL CABLE

(SEE KAT100 MANUAL)

5

9

4

8

3

7

2

6

1

OPTIONAL RS232 CABLE TO PC

(SEE K2/100 OR KI02 MANUAL)

CONTROL

TRANSVERTER

CONTROL

TRANSVERTER

DB-9

MALE

DB-9

MALE

DB-9

MALE

K2/100 OR

KAT100 ATU

K2 WITH KIO2

Figure 7. K2 Extended Control Cabling Hookup Diagram.

- 11 -

DB-9

FEMALE

PERSONAL

COMPUTER