K4EAA REMOTE VFO CABLE ASSEMBLY INSTRUCTIONS

You can use these instructions either for my Kit, available here, or for your own parts.
The connectors required are the oddly spaced 8-pin DINS that seemingly only Kenwood used!
The cable needed is 7 conductor or greater with a shield over all wires, shielded CAT-5 works fine.


Instructions for Assembly
Applies to TS-530S, TS-830S, VFO-230, VFO-240

Fortunately, all the Kenwood Hybrid remote VFO cables are wired pin-for-pin.  That is, each pin at one end of the cable connects to the identical pin at the other end of the cable.

Pin 1 connects to Pin 1, Pin 2 connects to Pin 2, etc.   The only pin that has to be closely watched when we assemble the cable is the shield for the entire cable assembly.  The shield must be connected to pin 7 as shown by the description "bare wire" in Photo 4.

To begin, strip the insulation from both ends of the supplied cable back about 3/4".  This will expose 9 colored wires and the shield wire.  Remove any aluminum shielding foil.

Next, strip about 1/8" of insulation from each of the colored wires, except the Violet and Grey wires - Cut those off short.  They will not be used.  Leave the bare wire full length.

Disassemble the DIN plugs and take one of the pin carriers as shown in Photo 3.  Using a soldering iron with a small tip and perhaps a "third hand" to assist, solder the bare wire (shield) to pin 7 as shown in Photo 4.  There is no freedom here, the shield must connect to Pin 7.

NOTE: The orientation in photo 4 is looking at the "back end" of the connector, where you are soldering the wires into the solder cups.

DOUBLE NOTE:  Be sure to slide the DIN plug housings onto the cable BEFORE you solder both connectors on!  If you forget, you'll have to unsolder one connector, slide on the housings, and start over!

I used standard electronic color coding, proceeding clockwise around the connector.

Black
Brown
Red
Orange
Yellow
Green
Blue

The Violet and Grey leads are cut off - Unused.

It makes no difference what color sequence you use, as long as you use the identical sequence at the other end!

Once you have all the leads connected,your carrier should look something like Photo 3.  Do the same on the other end of the cable, being sure that each colored wire goes to the identical pin on each end.

Reassemble the DIN plugs, and crimp the metal tabs onto the cable securely.  It would be wise to "buzz out" the new cable, checking pin-for-pin with your ohm-meter, looking for continuity and shorts.

ENJOY!


Photo 1


Photo 2


Photo 3


Photo 4

 

 

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