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HB 999 DI Transducer Guidiance #10626928 02/18/15 03:51 AM
Joined: Mar 2009
Posts: 20
Don T Offline OP
OP Offline
Joined: Mar 2009
Posts: 20
Bought a HB 999 SI.
Want to add a DI shoot thru hull transducer for high speed.
Confused on what DI shoot thru fiberglass hull transducer to purchase.
Humminbird tech support says 710225-1 XIH 9 DI is the correct transducer.
HB Tech support says with the new software release the XIH 9 DI T is the optimal DI transducer for the 999.
Reading all the various forums suggest to use the 710164-1 XP 9 20 as the correct transducer.
What would you suggest for DI high speed on the 999 and the difference between the two listed?
Signed..... confused.

Re: HB 999 DI Transducer Guidiance [Re: Don T] #10626966 02/18/15 04:08 AM
Joined: Nov 2010
Posts: 4,416
Wayne P. Online Content
TFF Team Angler
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Joined: Nov 2010
Posts: 4,416
I think you have your terms confused.
Down Imaging is just like Side Imaging and not anything like regular 2D sonar.

Typically you would pair a dual beam 83/200 kHz shoot-thru with a SI transducer with a SI unit. The connection cable is the AS SIDB Y.
The shoot-thru is the XP 9 20.

While you can use a transom DI transducer for shoot-thru, you would have to use a transducer switch to use the DI crystal in the DI transducer. Then choose to view dedicated DI or SI by changing the switch position. The switch is the TS3.

Last edited by Wayne P.; 02/18/15 04:09 AM.

Humminbird Helix 12 CHIRP SI, Helix 12 CHIRP MEGA SI+ GPS G3N, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2,
Helix 7 CHIRP MEGA SI GPS G3, Helix 10 MEGA DI+ GPS G3N, SOLIX 12 SI, 360, RC-1
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