I was told that the Uniden QT-206HP depth sounder will not work thru an alunium hull is this true or false

The Airmar P79 transducer will work with many instruments.
Check out the cross-reference link below.

-Steve


http://www.airmartechnology.com/marine-product-search.asp?q=P79

There are many websites that can tell you how to clean your transducer.
Check the link below.
-Steve


clean depth transducer Google Search

The P79 connects to the QT 206 as follows.
Red and black are side-by-side (red on the left) while the shield connects below the red. In case anyone requires it, here is the link to the QT 206 owners manual.

Hope this helpful
-Steve


http://www.uniden.com/pdf/QT206om.pdf

Here are your options:

In-hull Mount Transducer (200/50 kHz, 12/45 deg)
010-10327-00

Thru-hull Mount Transducer with Depth and Temperature
010-10194-01

Bronze, Thru-hull Mount Transducer with Depth and Temperature
010-10182-01

Transom Mount with Depth, Temperature and Speed
010-10192-01

Transom Mount with Depth and Temperature (200/50 kHz, 10/40 deg)
010-10272-00

Thru-hull Mount Transducer with Depth (200 kHz, 12 deg)
010-10107-00

It all depends on the type of boat and how you are going to be using the fishfinder. Here is my email: [email protected] if you want to discuss your uses further and if you want to purchase a transducer.

dial *72 and follow the insturctions

The shallow water sensitivity adjustment is set too far to an extreem. Center the adjustment, then recalibrate at the dock.

the transducer has to be in the water or attached to the inside of the hull if fiberglass with no air between the hull and the transducer. It doesn't transmit thru air.

Hello geld1. Your problem is the transducer, cable or connector. Check transducer with an ohm meter, flex the cable while ohming the restance shouldn't change. The location and mounting of the transducer could be the main problem. Use the the correct gel film including a secure postion support.

I believe it is the same model. Even if it is different, it will probably work if it has the same type of plug.

I will see if I can get mine off the hull for testing. Still have found no procedure. Thinking about just replacing the sounder with another unit.