Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Cable used for TM-V71A control head extension?  (Read 3718 times)
KD5GR
Member

Posts: 105




Ignore
« on: February 12, 2014, 06:49:04 PM »

I need to remote mount the control head for my Kenwood TM-V71A, but the factory DFK-3D extension kit isn't really an option.  I need more than a 9 foot cable and I don't need any of the other components in the separation kit.  The connector on the control head side of the cable appears to be a standard RJ45, but I don't know the model number of the smaller connector on the radio.  (It's possibly an RJ11, but I'm not sure.)  I also don't know the type of cable used.

Does anyone know what cable is used between the radio and control head and the model number of the smaller connector?

Thanks,
Chas.
Logged
KD5GR
Member

Posts: 105




Ignore
« Reply #1 on: February 12, 2014, 07:29:08 PM »

UPDATE:  The cable appears to be 26 AWG, 4 conductor telephone cable.

Chas.
Logged
M6GOM
Member

Posts: 1014




Ignore
« Reply #2 on: February 13, 2014, 03:53:56 AM »

Its 6 core so you need 6 core cable, or just use network cable, with a 6P6C crimp on connector on one end and a RJ45 on the other.

I've made and used plenty done with normal Cat 6 network cable and they've worked just fine for lengths up to 20ft on HF and VHF/UHF. Just install the antenna properly.
Logged
KD5GR
Member

Posts: 105




Ignore
« Reply #3 on: February 13, 2014, 12:45:11 PM »

Its 6 core so you need 6 core cable, or just use network cable, with a 6P6C crimp on connector on one end and a RJ45 on the other.

I've made and used plenty done with normal Cat 6 network cable and they've worked just fine for lengths up to 20ft on HF and VHF/UHF. Just install the antenna properly.
I think you're talking about the mic cable rather than the cable between the radio and the control head.  The control head cable has only four wires (yellow, green, black, red), but the mic cable has at least six wires.

Chas.
Logged
KD5GR
Member

Posts: 105




Ignore
« Reply #4 on: February 14, 2014, 03:42:22 PM »

Here's an update for anyone who may need to make their own control head extension cable for a Kenwood TM-V71A.  The cable between the radio and the control head is a 26 AWG 4 conductor cable.  The modular connector on the radio end of the cable is an RJ45.  The modular connector on the control head end of the cable is an RJ9.  The RJ9 is harder to find and it's the size used for telephone handsets. 

When you make up the cable, pay close attention to the layout of the 4 individual wires; they are NOT the same on both the RJ45 and RJ9.  The Kenwood extension kit appears to have a snap-on ferrite bead, so that may be a good idea also.  Though it's not absolutely necessary, try to get the same color coded wire to make life easier when setting up the pins - red, yellow, green and black.

Chas.
Logged
KD5GR
Member

Posts: 105




Ignore
« Reply #5 on: February 25, 2014, 05:39:02 PM »

Here's another update.  I decided to put the microphone connector in a different location and I didn't want to wait for the Kenwood mic extension cable (or pay $60).  I had read that Cat5 cable and a male-to-male in line coupler can be used.  I also read that not using the Kenwood extension cable could result in having RF problems on the Cat5 cable.

I used a 7' Cat5e cable ($3.65) and the above-mentioned coupler ($3.00).  Just to be sure, I put two wraps of the cable around a ferrite core at the radio.  Everything works fine.

Chas.
« Last Edit: February 25, 2014, 05:44:58 PM by KD5GR » Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!