SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Soldering Radio Antenna Cable Connections.
 Not a Member? 


Thread: Soldering Radio Antenna Cable Connections. Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
12-02-2011 12:55 PM
LakeSuperiorGeezer The tin lead solder with the lowest melting point is 63% tin. Radio Shack has it. When you apply heat to the tip of the connector, watch carefully and as soon as the solder melts, remove the iron. I have done all right with a 50 watt iron because the long tip on the connector does not carry the heat away very fast. One nice thing about the 63% solder is that it solidifies instantly, no mushy half liquid half solid that can have electrical resistance if moved slightly while solidifying. Myself, I prefer an iron that is not very hot because it is so easy to overheat insulation if the iron is left on the item for a few seconds too long. Also, lots of heat drives the tin out of the solder and makes a mushy jount while cooling. Check on how hot the iron is by seeing how fast the solder melts when applied to the tip. If too cool, you will not be able to melt the solder onto the connector. Just heat it up some more. I have not melted insulation with an iron that is not really hot. Get the crimping type of connector for the braided shield and solder for the center connector. It’s slightly more expensive, but does the job. Do tighten the nut down pretty well. The braid can take the pressure.

The RG8 has a diameter of .4 inches while the RG58 is .2 inches. For 5 watts transmission power into an RG8 on a 40 foot long cable, 4 watts makes it to the antenna, on the RG58 3 watts. Do not worry about the 1 watt loss as the height of the antenna is what is important. I have transmitted loud and clear over 50 miles in an aircraft with 5 watts, but then I had the elevation for line of sight which is what you need for VHF radio.
12-02-2011 09:09 AM
Joesaila Great Post! So glad for Sailnet. I took my mast down for the first time since getting the boat and plan on re doing all the internal wiring....so THANKS!
12-01-2011 10:19 PM
198290 Thanks for the quick reply. Guess we will have to pony up some cash for some cable.
12-01-2011 10:12 PM
SVAuspicious RG-6 is 75 ohm cable for TVs. You need a 50 ohm cable for your VHF.
12-01-2011 09:53 PM
198290 Hopefully I can resurrect this old thread. I noticed the article posted said that bigger coax is better. I have some a big roll of RG-6 that I would like to use to run a vhf antenna up a mast. The RG-6 is sold core instead of stranded. I think this should work fine but I wanted to post here and check.
08-16-2011 02:38 PM
SVAuspicious
Quote:
Originally Posted by Maine Sail View Post
Even good solderers can have BAD connections when doing this at the top of a spar. With a good heat sink and a mini-torch it works flawlessly and is repeatable. Wish I could say the same for the shield/braid but I have not found a good way of doing this in the "weather'...
Agree. I have a piece of canvas I use to cover up small things I can wrap around myself and the masthead but it is awkward, hard to see, and a little fussy. The crimp/solder is a better way to go.
08-16-2011 02:13 PM
Maine Sail
Quote:
Originally Posted by SVAuspicious View Post
+1 on the butane torch. The key is to get a lot of heat into the metal quickly, get the solder to flow, and get the heat off before the insulation melts.
I also some times clamp my Ancor single ratchet crimper, the one for heat shrink terminals, over the pin on the connector to use as a heat sink if it is windy. This keeps the heat at the pin and not into the insulator. When done I pop the quick release on the ratchet mechanism and snip the center conductor back some.

Even good solderers can have BAD connections when doing this at the top of a spar. With a good heat sink and a mini-torch it works flawlessly and is repeatable. Wish I could say the same for the shield/braid but I have not found a good way of doing this in the "weather'...
08-16-2011 12:08 PM
SVAuspicious
Quote:
Originally Posted by Maine Sail View Post
quick and easy with a mini butane torch.
+1 on the butane torch. The key is to get a lot of heat into the metal quickly, get the solder to flow, and get the heat off before the insulation melts.
08-16-2011 11:58 AM
Cruiser2B How far south on the eastern shore are you? I am an electronic/comm tech and build RF cables daily. I have all the tools and crimpers needed to assist you. I am in Norfolk if you need a hand and you are not that far. We can also properly weather proof your connectors so corrosion will never be an issue.
08-16-2011 11:23 AM
emoney There's nothing to soldering, once you take the mystique out. Practice with the soldering iron before going to the application that you need it for. Withing 1/2 hour you'll be getting the hang of it. And remember the solder material makes a difference so do a little due diligence and you'll come out fine.
This thread has more than 10 replies. Click here to review the whole thread.

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 02:09 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.