Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 20-01-2007, 17:07   #1
Registered User
 
Tnflakbait's Avatar

Join Date: Apr 2006
Location: Southern California
Boat: CSK, 33' Aita Pe'ape'a
Posts: 338
Images: 7
Lightbulb BNC cable question

I just got a Garmin map gps. The antanae has a bnc cable it seems. It is 20 feet long or so. Can I shorten it by cutting it and soildering? Weight is important for my catamaran. It only needs to run 4 feet or so. How can I shorten the cable? Thanks!
__________________

__________________
Tnflakbait is offline   Reply With Quote
Old 20-01-2007, 17:18   #2
cruiser

Join Date: Nov 2004
Posts: 4,525
I think unless you have some pretty extensive electronics stuff in your tool kit, you will have to buy a shorter shielded co-axial cable with BNC connectors on the end... or suck up the extra weight and coil it.

If you cut the shielded co-axial cable and try to connect the conductors together, you will end up causing signal loss in the cable. The outer conductor needs to be a perfect cylinder for the co-axial's lossless properties to work.

If you're in the USA, Radio Shack will probably have a shorter co-axial cable with BNCs.... although if I remember correclty, the cable on the Garmin is not serviceable at the antenna side?
__________________

__________________
ssullivan is offline   Reply With Quote
Old 21-01-2007, 03:11   #3
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,577
Images: 240
It seems simple enough to me - am I missing something in the query?
Cut the cable to length, allowing a “little” extra for a drip loop and future repairs; fish it, then install a new BNC* connector.
http://www.extron.com/download/files...ermkit-man.pdf

* BTW - which is it?
Bayonet-Neill-Concelman, British Naval Connector, or Bayonet Nut Connector ?
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 21-01-2007, 11:33   #4
Senior Cruiser
 
Alan Wheeler's Avatar

Cruisers Forum Supporter

Join Date: Dec 2003
Location: Marlborough Sounds. New Zealand
Boat: Hartley Tahitian 45ft. Leisure Lady
Posts: 8,038
Images: 102
Yes it is simple. But you need to use a New BNC connector. I imagine the old one was crimped. Do not try to reuse, it won't work. YHou can get three types of BNC connectors. Crimp type, but you need a special tool to crimp it with. Don't try any other tool than the proper one. The second is a screw on type. But it is specialised to the wire. It screws itself down into the coax but the centre conductor has to be just perfect or it will not work. The third is a solder type. This is going to be the best for your situation I would think. Just don';t allow the solder to get onto the outside of the centre pin and don't allow to much heat time on the connector. The trick is a very hot iron and a quick flash to make the joint.
Then add in Gords recomendations.
__________________
Wheels

For God so loved the world..........He didn't send a committee.
Alan Wheeler is offline   Reply With Quote
Old 21-01-2007, 14:05   #5
cruiser

Join Date: Nov 2004
Posts: 4,525
I am STUPID... LOL.

Brain fart.
__________________
ssullivan is offline   Reply With Quote
Old 21-01-2007, 18:51   #6
Registered User
 
Tnflakbait's Avatar

Join Date: Apr 2006
Location: Southern California
Boat: CSK, 33' Aita Pe'ape'a
Posts: 338
Images: 7
Thanks

Great advise, thanks guys!
__________________

__________________
Tnflakbait is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Running cable for mast install radome Latitude9.5 Marine Electronics 15 03-04-2009 06:47
Boat size and cruising question shellback Liveaboard's Forum 34 21-03-2007 13:11
Trimaran Question ssullivan Multihull Sailboats 13 11-11-2006 15:52
Air tool question: damage to pressure regulator? Gator81 Construction, Maintenance & Refit 8 08-11-2006 12:56
Windless Wiring Question Longhair Construction, Maintenance & Refit 14 20-04-2006 13:56



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 13:17.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.