HOME             Culpeper Amateur Radio Association

You will need :
2 RCA cables with one side of each cut off
Wire Cutters/Strippers
Solder
Flux
Soldering Vice or Clamp
Heat Shrink (optional)

Or you can make your own:
2 RCA plugs
2-2 conductor cables (center wire and a shield).
Wire Cutters/Strippers
Solder
Flux
Soldering Vice or Clamp
Heat Shrink
 
NOTE: The Kenwood TS-2000 cannot overdrive the SB-220 so you do not need the ALC cable. You can still connect one if you like. For illustration purposes I have included it in the diagram.

I will assume if you are making your own you have an understanding of how to do this, and I will concentrate on the Kenwood supplied connector.

It is a good idea to read through the instructions at least once before you actually start.

Locate the gray 7 pin connector that should have came with your Kenwood. Hold the connector with the pins facing you (ground hump at the bottom)
and the cable side away from you.
Now match up the pins to the numbered pins on the diagram (FIGURE 2). Keep in mind that you will be working from the back side of the connector and
the numbers will be mirrored!

( figures 1& 2 )

Disassemble the connector by first pulling the gray plastic cover off of the metal connector. ( you may need pliers for this). Be careful not to damage the connector.
Now separate the two sides of the metal connector and remove the plastic part holding the pins. Note the back side of the pins are hollow. This is the side
you will be connecting your wires to.

( figure 3 )

Feed the cables through the gray cover (FIGURE 3)

 and push it down out of the way. Strip back about 1/2 inch of  the outer covering of your RCA cables exposing the shield and a coated center wire. Pull the shield away from the center wire and tightly twist it. Remove about 1/16th of the coating on the center wire. If you are making the ALC cable, do the same to it.

Twist the ends of each bare wire. The wires should be small enough to slide into the pin, if not you will need to remove a few strands. If you are making the ALC cable it will share pins with the ANT Relay ground, so you will need to wrap one around the other, slightly below the tip (if you wrap to the tip it will not fit in the pin).

Starting with the ground, dip the bare wire into a little flux and insert it into the number 2 (common) pin. A small soldering vice will come in handy at this point. You can get them at your local electronics store. Touch the tip of your hot soldering iron to some solder so that the tip of the iron picks up just a little solder. Touch the tip of the iron to the to of the pin and hold it there for 2 to 3 seconds, or when the solder transfers to the wire and pin. CAUTION: Do not hold it there too long or the pin will get too hot and melt the plastic holding it! Hold the wire in position for a few seconds so that it cools and creates the bond.

Following the above procedures, prep and solder the center wire of your ANT Relay cable to the number 4 pin.

NOTE: The TX/RX control method differs, depending on the amplifier. The SB-220 enters the TX mode when the control 
terminal is grounded. If using an amplifier other than the SB-220
check you amplifiers manual, and use the chart on page 102 of the Kenwood manual for the proper pin for you amp.

If using an ALC, connect that center wire to the number 6 pin.

If your job is nice and neat you should not need any heat shrink to protect the pins.

Place the two metal halves of the connector
around the plastic disc holding the pins and slide it into the gray cover. Be sure and line up the groove of the cover with the channel on the
metal half..

It would be a good idea to check the continuity of the pins to the corresponding RCA plug at this time to make sure all connections
are right and that no shorts are present.

That's it! connect your cable to the amp and radio.
See page 102 of the manual for instructions on activating the
 radio to key  the amp.
HINT ... Menu 28a

Disclaimer: Instructions are a guide only and the author holds no responsibility to any damage you may cause to you equipment or self. Author recommends having an experienced Elmer there to help you if you are not familiar with the procedures.

Diagrams created by W4HDM and are not to be distributed or reproduced with out first obtaining permission.