Author Topic: Humminbird XP 9 20 Thru Hull Transducer Not Working  (Read 737 times)

0 Members and 1 Guest are viewing this topic.

Offline Rich P

  • Newbie
  • *
  • Joined: Jul 2017
  • location: Basehor
  • Posts: 2
  • Unit(s): 958c, 998c, & 1198c
  • Accessories: Ultrex
Humminbird XP 9 20 Thru Hull Transducer Not Working
« on: July 17, 2017, 12:29:09 PM »
I am trying to get a thru hull transducer working on my 2008 198VX. There was an existing one, in the bilge area that came loose, so I reattached w/ epoxy and am only getting a reading of 1.8'. I purchased a new XP 9 20, tested it directly out of the back of my 1198c, and it worked fine when placing in water over the boat. But, when I held it against the hull in the bilge area- 1.8' again.

I have had two hull repairs done by a professional fiberglass company, and am wondering if this could be the reason for the erroneous reading, or if it is something else? The original thru hull puck worked fine, until it came loose a couple of years ago. After hitting a couple of underwater objects, while on plane, I really need to get a transducer working at high speeds. FWIW, the side imaging, and 2D sonar, works fine out of the SI transducer mounted to the hull.

I appreciate any advice!

Thank you in advance,
Rich


Offline rnvinc

  • Hero Member
  • *****
  • Joined: Nov 2009
  • location: Western KY
  • Posts: 3405
  • Unit(s): 1197c SI Combo, Onix 8ci SI Combo
  • Software: Dependent on whim
  • Accessories: AS GRHA, AS GPS HS, LowBird LSS 1 & 2
Re: Humminbird XP 9 20 Thru Hull Transducer Not Working
« Reply #1 on: July 17, 2017, 05:57:54 PM »
Simply holding the xducer against the inside of the hull will not give adequate results because this leaves air between the xducer housing and the hull (Sonar will not read thru air)  ...

Test the shoot thru xducer by adding a couple inches of water into the bilge and test on the water for results  ...

Here is more info  ...
http://www.bbcboards.net/showthread.php?t=172972&p=1538600&viewfull=1#post1538600

Rickie

Offline Rich P

  • Newbie
  • *
  • Joined: Jul 2017
  • location: Basehor
  • Posts: 2
  • Unit(s): 958c, 998c, & 1198c
  • Accessories: Ultrex
Re: Humminbird XP 9 20 Thru Hull Transducer Not Working
« Reply #2 on: July 18, 2017, 05:57:33 AM »
Thank you, I will give that I try next time I'm out.

Offline fishreed

  • Full Member
  • ***
  • Joined: Mar 2015
  • location: Byron, Michigan
  • Posts: 135
  • fishreed
  • Unit(s): 899CI SI HD,1199SI HD,
  • Software: current
  • Accessories: Both Quadrabeam & twin HD SI ducers
Re: Humminbird XP 9 20 Thru Hull Transducer Not Working
« Reply #3 on: April 01, 2018, 03:13:57 PM »
I am trying to get a thru hull transducer working on my 2008 198VX. There was an existing one, in the bilge area that came loose, so I reattached w/ epoxy and am only getting a reading of 1.8'. I purchased a new XP 9 20, tested it directly out of the back of my 1198c, and it worked fine when placing in water over the boat. But, when I held it against the hull in the bilge area- 1.8' again.

I have had two hull repairs done by a professional fiberglass company, and am wondering if this could be the reason for the erroneous reading, or if it is something else? The original thru hull puck worked fine, until it came loose a couple of years ago. After hitting a couple of underwater objects, while on plane, I really need to get a transducer working at high speeds. FWIW, the side imaging, and 2D sonar, works fine out of the SI transducer mounted to the hull.

I appreciate any advice!

Was the Fiberglas repair job down/under  where you want to mount your transducer?  If it was, I suggest you find another spot on your boat for your transducer location that the Fiberglas wasn't repaired.

Thank you in advance,
Rich

Was the Fiberglas repair job down/under  where you want to mount your transducer?  If it was, I suggest you find another spot on your boat for your transducer location that the Fiberglas wasn't repaired and use water between the transducer face and your Fiberglas location as Rickie said.
« Last Edit: April 01, 2018, 03:16:32 PM by fishreed »


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo

 

Related Topics

  Subject / Started by Replies Last post
8 Replies
5992 Views
Last post September 13, 2016, 10:34:10 AM
by Bob B
4 Replies
2476 Views
Last post August 05, 2011, 05:46:07 AM
by sonar2000
5 Replies
2191 Views
Last post January 29, 2013, 04:09:52 PM
by sonar2000
4 Replies
1668 Views
Last post April 24, 2013, 10:55:50 AM
by fishesman
2 Replies
2051 Views
Last post August 04, 2013, 08:26:43 AM
by Tyee Hunter
5 Replies
2240 Views
Last post March 20, 2014, 09:49:02 AM
by Rotus623
3 Replies
894 Views
Last post May 24, 2015, 09:18:02 AM
by rnvinc
2 Replies
809 Views
Last post August 31, 2015, 09:39:17 PM
by battleborn


SimplePortal 2.3.3 © 2008-2010, SimplePortal