The following post is a re-post from with some updates to make it more current and correct.

Of course, the best place to start is to describe what was the OEM electronics installed on my ’09 270DA.  To give a point of reference, the feature image above shows the stock helm for my boat (with all the options I got).  My 2009 270 Sundancer anniversary edition came with:

  • Sony CDXH905IP Marine AM/FM/CD stereo with digital display remote and iPod connector.
  • Originally a DICE iPod cradle but I changed it to a universal cradle.
  • Originally an AudioVox FPE1508DV LCD flat panel TV.  This was replaced with a Magnavox LED HDTV.
  • Glomex HD omni directional ATSC antenna w/ amplifier/gain control.

So in my effort to outfit my ’09 270DA with full electronics, here’s the part list of what I’ve got so far:

  1. Ericsson W35 Fixed Wireless Terminal
  2. Ericsson W35 12/24V Power Lead
  3. 1 x Marine Antenna 746 – CDMA/GSM/3G (746)
  4. 5187 HD Shakespeare Stainless Steel Ratchet Mount
  5. 1 x Antenna Patch Lead for W30/W35 (RG174NMCX)
  6. 1 x LMR-400 Type Cable Set – 10m
  7. 2 x Blue Sea Systems Medium Cable Clam
  8. SNYSC1C — Sony SiriusConnect Interface
  9. SCC1C — SiriusConnect Universal Vehicle Tuner
  10. Shakespeare Galaxy SRA-40 Sirius Satellite Radio Antenna
  11. RayMarine RD218 w/ 15m cable
  12. RayMarine 33STV Satellite Dish & Control Unit
  13. Bell TV/ExpressVu 4100 Satellite Receiver
  14. Buffalo IR Repeater
  15. SCANSTRUT DPT-SR1-30 Compact Dual PowerTower
  16. SCANSTRUT SC-113 Integrated Light Bar
  17. SCANSTRUT SC-111 GPS Antenna Bar

Of course, mounting all of this stuff will be a task. The most troublesome will be the radome (and satdome) because of the mount. They say a picture is worth a thousand words, here’s two or three thousand.

Radar arch showing the narrow and small mount points.

A custom base plate will be required to install the power tower.

What is being installed…

Here’s the steps/plans I made to install the above:

  • Create a 8″x8″ interface plate, sculpted to the radar/spoiler arch surface, out of starboard.
  • Mount center of the arch the ScanStrut DPT-SR1-30 with a RM RD218, RM 33STV, Shakespear Galaxy SRA-40 on a ScanStrut SC111, and an ScanStrut SC113 light bar. It should look this (though the RM satdome pictured is the 37STV and not the 33STV which is smaller.
  • The following image depicts how the GPS/light bar will be mounted on the satdome plate.

  • Next up is the Laser 746 antenna on a Shakespeare 5187 ratchet mount with a Blue Sea cable clam.
  • Access to the mounts will be through the center access panel and the port LED light.
  • Once the antennas are mounted, the interior mounting begins. I also have to determine how the RM GPS 125 is connected, SeaTalk or NMEA-0183.  This info will be required later.
  • Then I have to mount the ACU and the Bell TV/ExpressVu 4100 receiver/IRD (+ AC/DC power converter), preferably where the electrical panel cabinet, where the Sony CDX-H905IP is located. I need ~10″ depth for a rack style install otherwise I may have to go funky in terms of mounting. Of course, this means I have to cable from the helm/arch/TV to here which is problematic. I just don’t how the wires are routed at this point.
  • The Sirius radio tuner and the Sony interface modules have to be mounted in the electrical cabinet as well. There isn’t much room so mentioning that I also have the Ericsson W35 unit to install as well is giving me a headache.
  • Lastly, having a bunch of IR remote controlled stuff in a cabinet (with no window) is stupid. So either I have to put in a clear glass window or a IR repeater… I went for a Buffalo IR repeater.
  • Lastly, having to put in some data/telephone outlets which I picked up already. The first one is for the cabin and the second one is for the helm (phone only).

Jbox for the cabin.

Of course, a weather/water resistant Jbox will be used for the cockpit.  All these parts round out my installation.  In my next post, I’ll describe how I executed my plans and got into even more electronics like NMEA 0183, NMEA 2000, SeaTalk, SeaTalkNG, SmartCraft, & CanBUS.



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