RF Ground

Backlash

Chief Petty Officer
Joined
May 16, 2001
Messages
586
I'm installing my new Raymarine C-80 system and the instructions say, "it is important that an effective RF ground is connected to the system. You can ground the DSM300 by connecting the drain wire of the power input cable to the boat's RF ground."<br />I assume RF stands for "radio frequency" but I have no idea where the RF ground is located. Any help would be appreciated.<br />Thanks,<br />Backlash
 

amirm

Petty Officer 2nd Class
Joined
May 7, 2005
Messages
176
Re: RF Ground

I would simply use the ground (negative) connection (i.e connect the braided wire to the same point as your black DC ground). An RF ground is a nice thing to have but you probably don't have one on your boat. <br /><br />My last Raymarine setup (1280) with DSM 250 worked just fine without an RF ground and I intend to install my new C80 the same way. <br /><br />Amir
 

Backlash

Chief Petty Officer
Joined
May 16, 2001
Messages
586
Re: RF Ground

Thanks guys. Sorry for the delay in getting back but I've been busy installing my new stuff. I took your advice amir and connected the braided wire to the standard ground. Works just fine. Thanks again. <br />Backlash :)
 

gutshot grouper

Petty Officer 2nd Class
Joined
Aug 29, 2004
Messages
110
Re: RF Ground

Ideally RF ground would be at least 1-2 square feet of copper plate submerged in salt water , as a compromise, if you ground the shield of the coax to the ship's system ground, it should connect to the engine, prop shaft and the rudder in the case of an inboard.The metal fittings on any thru hulls should all be bonded toether, but I don't know the configuration you are facing, out<br />board, inboard or outdrive. Vertical antennas are very inefficient without sufficient ground counterpoise. { RF ground }
 
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