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E. F. Johnson Programming Cable Information Compiled, HTML'd and Maintained by Mike Morris WA6ILQ |
DONATIONS OF INFORMATION, ESPECIALLY PDFs OF MANUALS WE DON'T HAVE WOULD BE GREATLY APPRECIATED.
Please contact the page maintainer above.
Your author / page maintainer has very little personal knowledge of this equipment.
A few details on the text below... An "RJ-xx" is a telephone connector...
an RJ-11 is the 2 center pins in a 6-pin plastic body, an RJ-12 is the 4 center pins in the same 6-pin plastic body, an RJ-14 is all 6 pins.
.
An RJ45 is 8 pins in a larger body (the common "Ethernet" connector). An RJ-50 is 10 pins in the same size body as the RJ-45.
In the text below the RJ-12 is incorrectly identified as 6 pins.
A second note: The Kenwood KPG-4 and the KPG-46 programming cables are the exact same unit except for
the RJ connector on the radio end of the cable. The KPG-4 has a 6-pin (RJ-11 / RJ-12-style) connector.
The KPG-46 has an 8-pin connector (RJ-45 style) and the center 6 pins are wired the same and the outer 2 pins are not used.
So if you have a KPG-46 on hand you can make the same type of adapter as described below by using a KPG-46 and
an RJ-45 jack rather than a KPG-4 and an RJ-12 / RJ-14 jack.
There are more details (including photos) on the Kenwood programming cables here.
This section is paraphrased from a posting that Pete N2MCI made on the EFJ yahoogroup:
You will need to build a programing cable. The
schematic can be found here. Pay careful attention to the drawing as Johnson numbers
the microphone jack pins very different from Ethernet. You can cheat and buy a DE-9 (NOT A
USB VERSION!) Kenwood KPG-4 programming cable (under $10 on ebay) and then make a pinout
changer - a 6-pin screw terminal RJ-12 jack wired to a stub of a common 8-pin RJ45 ethernet
cable (and I'd use a stranded wire ethernet cable rather than a solid one).
| Programming cable pinouts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Kenwood mic jack | EFJ pin | 86xx Function | EFJ pin | 96xx Function | EFJ pin | 71xx Function | ||||
| Pin | Function | |||||||||
| 1 | 12v | 6 | 12v | 8 | 12v | 5 | 8v | |||
| 2 | GND | 2 | GND | 3 | GND | 2, 4, 7, 9 | GND | |||
| 3 | PTT / TXD | 8 | TXD | 10 | TXD | 3 | TXD | |||
| 6 | Hook / RXD | 1 | RXD | 13 | RXD | 8 | RXD | |||
Besides the pin numbering, there is one little quirk about the EFJ 86xx programming cable... The plug that goes into the microphone jack of the radio is a special 8 pin RJ-12 made by Virginia Plastics and not the normal 8 pin RJ-45... You can use a 8-pin RJ-45 but you have to take off a few thousands of an inch off each side... I use a a grinding wheel to take most of the excess off, and use a hand file to fine tune the fix... It's not critical as the spring tab latch centers the plug... If you don't have a grinding wheel you just to get to do more filing.
Here's a description of the mike jack pins and the wire colors used with their 9800
RPI programming cables:
Radio Mic RPI Programming Cable
A--- Orange >---RxD
1--- Black >---GND
2--- Red >---MIC AUDIO OUT
3--- Green >---HANGER
4--- Yellow >---20V PROG
5--- Blue >---BATTERY
6--- Grey >---RX Audio IN
B--- Brown >---TxD
Here are two programming adapters/cables for the Challenger series:
Contact Information:
The author can be contacted by way of the "Maintained by" link above.
This page split from the main page 16-Nov-2011.
This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by multiple originating authors and Kevin Custer W3KKC. All Rights are Reserved, including that of paper and web publication elsewhere.
