Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 01-04-2019, 14:12   #1
Registered User
 
Hesti's Avatar

Join Date: Nov 2018
Location: North Germany
Boat: 29 ft
Posts: 82
Antenna internal resistance

Going over things on our new old boat, as I was experiencing issues with the antenna cable and was doing measurements anyway, I also held the Ohm-meter to the VHF antenna. It showed something like 1,5 Ohms.



Does anybody know if this sounds right? The antenna looks well built, with a plastic housing protecting the wire or whatever is in there. Not the most primitive design I have ever seen. So, if the 1,5 Ohms sounds good, it is going back up to the top of the mast.
Hesti is offline   Reply With Quote
Old 01-04-2019, 17:02   #2
Registered User

Join Date: Jul 2018
Posts: 140
Re: Antenna internal resistance

You cant really measure the quality of an antenna with an ohm meter. Some antennas will show high resistance some will show an open. Really depends on the antenna design. You cant test a coax with a ohm meter. Short out the pins of the coax on one end and confirm you see a short at the other. The best way to test a coax and antenna is to use an SWR meter to make sure you power is going forward out the antenna and not reflected back to the radio. With a good spectrum analyser you can test an antenna but those are a bit big and pricey for a one time test.
__________________
Gary
ohgary is online now   Reply With Quote
Old 02-04-2019, 03:52   #3
Senior Cruiser
 
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 35,375
Images: 241
Re: Antenna internal resistance

What Gary said.
See ➥ VHF Antenna Resistance Value
__________________
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
Reply

Tags
antenna

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Will GX2200 Internal GPS Antenna Work Under Sailboat Deck Wyoming pirate Marine Electronics 16 08-05-2014 18:26
Convert Internal Antenna to External rnjpinz Marine Electronics 12 27-09-2011 05:28
VHF Antenna Resistance Value nigel1 Marine Electronics 22 29-09-2010 23:31
CP180 with Internal Antenna - Best Price ? szymek Navigation 5 12-04-2010 13:09
At what resistance do you change the battery wiring? Cadence10m Electrical: Batteries, Generators & Solar 13 04-11-2007 17:08



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 18:21.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.