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Old 08-20-2013, 09:37 PM   #1
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HenryD's Avatar
City: On the Great Loop - cruising down the Tombigbee
Country: USA
Vessel Name: Seven Tenths
Vessel Model: Mirage / Great Harbour 47
Join Date: Dec 2012
Posts: 238
Extending Simrad Robnet cable to AP20

I need to move my AP20 control head. It has two Robnet cables that screw into it. I looked for a 2m-3m extension cable but Simrad makes a 1m and a 7m cable. Can I splice 8' of signal wire?

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Old 08-20-2013, 11:05 PM   #2
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City: League City, TX
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Vessel Name: Boomarang
Vessel Model: Fales 30
Join Date: Aug 2011
Posts: 648

According to the AP21-22 Installation Manual:

4.8 Cable connections
Use only shielded cables. This includes Mains input, drive units
and if necessary for the extension of the RF300 Rudder Feedback
cable. The clutch/bypass cable and the solenoid cable should be
1,5 mm2 (AWG14). Signal cables should be 0.5 mm2 (AWG20)
twisted pairs.

If I were going to extend the control cables, I would call Simrad for some bulk cable or check eBay for a length of used Robnet cable long enough to make your extensions. The twisted pairs are important and the shielding is even more important. I'm sure good mechanical or soldered connections will be just fine, but make sure you also splice the shielding and insulate it well.

As it turns out, I am re-routing some Robnet cabling on my boat and may have some I can send you. PM me so we can discuss.

m/v Boomarang
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simrad ap20

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