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Helix 9 CHIRP MEGA DI + GPS G3N / two transducers?

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MarjanK:
Hello

For the new season, I intend to upgrade my old Helix 7 with the new Helix 9 CHIRP MEGA DI + GPS G3N.

I already have a XTH 9 DB 74 P Plastic Thru-Hull Transducer (50 / 200khz) on the boat.
With the new Helix comes the XM 9 HW MDI T Transducer.
Which Y-cable do I need to connect both transducers to a new device (Helix9) or I need a switch.

I have one more question.
As I mentioned, I would like to keep Old Helix 7 most of it used for GPS.
Because it is not network, ... do I have to bring a signal from the transducer to it or is there any other way to get the depth information?

How to share the signal on both devices or how to bring  depth information to helix 7.

... by the way, is it already known when will the new G3N be available?

Best Regards,
Marjan

rnvinc:
I assume the 9 M SIDB Y cable will also work with the HELIX MEGA+ units to split off the 2d signal to a separate 2d xducer  ... (The HB website hasn't been updated to include all compatibility data for the new G3N units)  ...
https://humminbird.johnsonoutdoors.com/accessories/cables/9-m-sidb-y-9-pin-side-imaging-dual-beam-splitter-cable

You might email HB just to be sure  ...
https://www.humminbird.com/contact?_ga=2.180999396.259935430.1544147349-1542806533.1541642173
-----

A non-networkable HELIX 7 must have a transducer connected direct to the head unit to display any Sonar data  ... There is no way for 2 head units to share a common transducer except by Ethernet  ...

I think some US dealers are already receiving the new G3N units  ...

Rickie

MarjanK:
Thanks for the reply.
About the y-cable I'll check.
For two devices and separate transducers, I'm afraid that it will repeat the problem that I had on last year on the old boat, so that the signal would be disturbed. Even though I set the sonder on a different frequency (898si at 83kh and Helix 7 on 200khz chirp), they were disturbed, noise appeared. It only helped if I physically disconnected a transducer from one of the devices.
Does anyone have any experience on this?

br, Marjan

rnvinc:

--- Quote from: MarjanK on December 07, 2018, 01:25:21 AM ---Thanks for the reply.
About the y-cable I'll check.
For two devices and separate transducers, I'm afraid that it will repeat the problem that I had on last year on the old boat, so that the signal would be disturbed. Even though I set the sonder on a different frequency (898si at 83kh and Helix 7 on 200khz chirp), they were disturbed, noise appeared. It only helped if I physically disconnected a transducer from one of the devices.
Does anyone have any experience on this?

br, Marjan

--- End quote ---

Crosstalk interference as Noise showing on the display is common when 2 xducers are transmitting the same frequency at the same time  ...

Networked units are able to eliminate crosstalk interference by selecting one common xducer for each separate head unit in the networking Menu  ...

Non-networked units are able to eliminate crosstalk interference by shutting off the Sonar broadcast of one unit  ...

"Sonar Off" can be found under the Power Xpress Menu (1 quick press of the power button  ...

Rickie

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