DX Engineering Top Ten Devices OPSWAPPER Bedienungsanleitung

OP Swapper

TDS-OPSWAPPER

TDS-OPSWAPPER-INS Revision 0

 DX Engineering 2021

1200 Southeast Ave. - Tallmadge, OH 44278 USA

Phone: (800) 777-0703

Tech Support and International: (330) 572-3200 Fax: (330) 572-3279

E-mail: DXEngineering@DXEngineering.com

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Features Overview

The Top Ten Devices Op Swapper (OS) is an accessory that allows a single antenna system to be

shared between two transceivers, while providing protection to the non-transmitting radio’s front

end. Here are some of its features:

Positive Lockout The OS uses electrically interlocked relay contacts that prevent two transmitters

from being active at the same time.

Ultra High Isolation Typical isolation to the non-transmitting radio vs frequency:

Frequency (MHz)

Isolation (dB)

1.8 to 7

100

Transceiver Inhibit The non-transmitting radio is held in an inhibited state to prevent inadvertent

transmitting into an open circuit. The inherent circuitry works directly with Yaesu and Elecraft

K3/K3S (we will call them a K3 in this manual) radios. This functionality can be implemented for

any radio pair by use of external relays.

High Power Rating Rated at 200 Watts, allowing use with virtually all currently available

transceivers.

Switched Outputs Two 12Vdc, 1A switched outputs provide an easy way to control external

circuitry such as LEDs or control relays.

LED Indicators Two LEDs are provided on the front panel to indicate which radio is transmitting.

Simplified Connection Diagram

Fig. 1 –Simplified Connection Diagram

In this manual, we refer to the two radios as “A” and “B,” as shown above.

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Transmit Inhibit (TXINH) Setup

The only configuration possible with the OS is an internal jumper that configures the “transmit

inhibit” (TXINH) signal associated with each radio.

Important Notes:

Radios A and B can be of any type, and there is no requirement that they both be the same type.

If one or both is a modern Yaesu or Elecraft K3, an internal jumper will need to be set to

configure the transmit inhibit (TXINH). Said in another way, if neither radio is a Yaesu or K3,

then there is no configuration to be done, and the “Setup” can be skipped.

As described, the non-transmitting radio is prevented from emitting RF by using the radio’s

TXINH capability, if the radio is a Yaesu or K3. Other radios are prevented from transmitting

using external relays.

The OS ships with the TXINH outputs for both radios configured for an Elecraft K3. If both A and B

are a K3, then nothing has to be done. If either is a Yaesu, then follow the instructions below to

configure TXINH for the Yaesu(s):

a. Remove the cover by removing the 12 sheet metal screws. Note that the orientation of the internal

shield, to make sure that the cover will be reinstalled in the correct orientation. Be sure to keep

the lock washers.

b. Find jumpers labeled SH1 for Radio A and/or SH2 for Radio B:

Set the jumper plugs per Table 1. You can store the jumper in the “Off” position by placing it on just

one of the pins of SH1 or SH2.

Radio A

Radio B

Type

SH1

SH2

Type

Yaesu

Off

Yaesu

Other

Does Not Matter

Other

Table 1 –SH1 and SH2 Jumper Settings

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If one or both of your transceivers is other than Yaesu or K3, then the setting of the SH1/SH2 jumper

is immaterial, and can be left installed. More later in Section 6 on how to interface other

manufacturers’ radios to the OS.

Reinstall the cover using previously removed screws and lock washers. It is important to tighten the

screws so that the enclosure pieces have good contact. Do not over tighten to strip out the hole!

K3 Menu Setting –Go to the K3’s Config Menu and set TX INH to HI = Inh.

RF, 12Vdc Power, and Amplifier Control Connections

a. RF Connections –Connect Radio A’s RF output to the A connector on the OS. Similarly,

connect Radio B to the B connector. The amplifier/antenna is connected to the “COM” connector

on the OS.

b. 12Vdc Power –Use the provided 2.5mm dc power plug to connect to your 12V source at the OS

rear panel connector. The OS does not derive power from the radio(s), so this is a mandatory

connection, regardless of radio type.

c. Amplifier Control –If an amplifier is being shared, connect the AMP connector to the

amplifier’s relay control input.

Yaesu or K3 Transceivers

a. Radio TXG interface –Connect a cable from the radio’s connector that provides a ground when

the radio goes into transmit mode. This can either be a relay contact or an N-channel transistor.

The voltage seen by the radio on this line is 12Vdc. The connector at the OS is an RCA.

b. Radio transmit inhibit (TXINH) connections:

Yaesu FT-1000/2000/5000/9000 transceivers –The TXINH line is on the “Band Data”

connector. The connector is a DIN 8-262 connector. This is a special connector for Yaesu radios,

and is available from The RFConnection, and others. Do not attempt to plug a regular, DIN 8-

270 into the Band Data jack on the radio, as you will damage the jack.

Fig. 3 –Yaesu Radio Band Data Jack

Connect the TXINH line to pin 8 and ground (shield) to pin 3.

NOTE: Other Yaesu models, such as the FT-1200 and FT-3000 have a different style jack. Consult

your manual for TX INH connection details.

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Elecraft K3 –The TXINH line is on Pin 7 of the ACC jack. The ACC jack is a DE-15, otherwise

known as a VGA connector.

Fig. 4 –Elecraft K3 AUX Connector

Connect the TXINH line to Pin 7 and cable shield to Pin 5.

Access to these pins –If the K3 AUX or Yaesu Band Data Jack are already being used for other

purposes, a means to access the TXINH pins will need to be devised.

The following is a connection diagram illustrating the above connections, assuming one Yaesu and

one K3:

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6. Radios other than Yaesu or K3

The OS can be used with other radio types. The difference in the interconnections is that Yaesus and

Elecraft K3s are the only radios that allow the transmitter to be held in a TX-inhibit mode using an

external signal. As long as that signal is present, there is no way to force the radio to transmit RF at

any level. For other radios, since there is no TX-inhibit capability, the radio is prevented from

transmitting by opening the key and microphone input lines using external relays, as described

below. When Radio A transmits, Radio B’s mic and key must be interrupted, and vice versa. Aux 1

and Aux 2 provide switched 12Vdc signals that power external relays to do that job. Each connector

is an 1/8” stereo jack. Here’s how they work:

Connector

Radio that is Transmitting

Neither

Aux 1 Tip

0 V

12 V

Aux 1 Ring

0 V

12 V

Aux 2 Tip

0 V

12 V

Aux 2 Ring

0 V

12 V

CAUTION: You must use a stereo plug, even if you are only planning to connect to

the tip. Failure to do so may result in damage to the OS.

The following diagram shows how to wire an auxiliary relay to prevent transmitting on an IC-7800

when the other radio, a K3, transmits:

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How it works –OS connector Aux 1 tip goes to 12Vdc when Radio 1 goes into transmit mode.

External relay K’s contacts open to prevent transmit audio (from microphone, computer, etc.) and

CW key line (from keyer, computer, etc.) from reaching Radio 2, which will prevent SSB or CW RF

energy from being transmitted by Radio 2.

IMPORTANT WARNINGS:

This approach does not prevent the radio from going into “transmit mode.” While Radio 1 in the

above example is transmitting, Radio 2 can be put into transmit mode by closing a foot switch,

pushing the TX button on the front of the radio, etc. This is acceptable as long as the audio and

CW inputs to the radio are interrupted.

This approach does not prevent the operator of Radio 2 from activating either stored audio or CW

messages inside the radio. If the radio has this capability, it is highly recommended that these

features be disabled.

Specifications

Voltage Requirement +12 Vdc (nominal)

Current Requirement 100 mA plus external devices

Switched External Devices 12 Vdc at Max. 1A per each of AUX1 and AUX2

Isolation Between Ports A and B (one active):

Frequency (MHz)

Isolation (dB)

1.8 to 7

100

Insertion Loss 0.1db

VSWR <1.2 at 30 MHz

Operating Time 3 ms

Frequency Range 1.8-30 MHz

Power Rating 200W ICS

Dimensions (HWD) 2 x 5 x 2.25 inches

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Manual Updates

Every effort is made to supply the latest manual revision with each product. Occasionally a manual will be

updated between the time your DX Engineering product is shipped and when you receive it. Please check the

DX Engineering web site (www.dxengineering.com) for the latest revision manual.

Technical Support

All customer inquiries regarding both new and previous purchases of the Top Ten Devices A/B

Station Selector, the Op Swapper, and the Band Aide Band Decoder should be directed to DX

Engineering at (330) 572-3200. You can also e-mail us at:

[email protected]

For best service, please take a few minutes to review this manual before you call.

Warranty

All products manufactured by DX Engineering are warranted to be free from defects in material and workmanship for a period of one

(1) year from date of shipment. DX Engineering’s sole obligation under these warranties shall be to issue credit, repair or replace any

item or part thereof which is proved to be other than as warranted; no allowance shall be made for any labor charges of Buyer for

replacement of parts, adjustment or repairs, or any other work, unless such charges are authorized in advance by DX Engineering. If

DX Engineering’s products are claimed to be defective in material or workmanship, DX Engineering shall, upon prompt notice

thereof, issue shipping instructions for return to DX Engineering (transportation-charges prepaid by Buyer). Every such claim for

breach of these warranties shall be deemed to be waived by Buyer unless made in writing. The above warranties shall not extend to

any products or parts thereof which have been subjected to any misuse or neglect, damaged by accident, rendered defective by reason

of improper installation, damaged from severe weather including floods, or abnormal environmental conditions such as prolonged

exposure to corrosives or power surges, or by the performance of repairs or alterations outside of our plant, and shall not apply to any

goods or parts thereof furnished by Buyer or acquired from others at Buyer’s specifications. In addition, DX Engineering’s warranties

do not extend to other equipment and parts manufactured by others except to the extent of the original manufacturer’s warranty to DX

Engineering. The obligations under the foregoing warranties are limited to the precise terms thereof. These warranties provide

exclusive remedies, expressly in lieu of all other remedies including claims for special or consequential damages. SELLER

NEITHER MAKES NOR ASSUMES ANY OTHER WARRANTY WHATSOEVER, WHETHER EXPRESS, STATUTORY, OR

IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NO PERSON IS AUTHORIZED TO

ASSUME FOR DX ENGINEERING ANY OBLIGATION OR LIABILITY NOT STRICTLY IN ACCORDANCE WITH THE

FOREGOING.

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owners.

Specifications subject to change without notice.

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