Losing fix on Ray Marine A50D when VHF mic is qued.

[Her Diamond 2]

Has anyone experienced problems with losing the gps fix when the mic is qued? I purchased and installed an A50D in place of the old unit. The same positive and negative wires were used and the drain wire was grounded. The unit is installed on a 2004 300 Sundancer and I'm using the internal GPS antenna. Everything else seems to work fine and I can't seem to find out why this happens?
Neil

 

[300SR]

Best bet maybe to call raymarines 800 number,they are very helpfull.

 

[Hampton]

2 guesses:

The electrical drain from your VHF is causing a loss of power in the GPS - double check connections and ground. Try running a temp set of wires to one unit or the other - from a distant DC source (portable battery).

or

The power from your VHF transmission is blocking your GPS reception. GPS signals are extremely weak. That's why you can't have any electrical devices on in an airplane during critical phases of flight (takeoff and landing). Try swinging your VHF antenna around to a different angle just to see if it makes a difference. Check your VHF antenna connection - bad connection may increase the interference. Try shielding the GPS with a reflector to see if the VHF signal is jamming your GPS receiver. Internal GPS is probably the problem - too weak of signal getting to receiver.

That is all - in Portland and flying to Atlanta tonight. Time for some coffee.

 

[Go Aweigh2452]

Your radio is not shielding it's rf and your internal antennae is probably too close to it. Pick up a raystar 125 and hook that up. The 125 also allows seatalk or nema2000 so it will help if you add more toys later on to your network