GPS aerial

[Laysula]

I have a Raymarine 54 e vhf. The gps lead is semi connected to this. Before I connect it properly, is it a gps aerial? Does anyone recognise it? It is stuck to the side of the hull high up with a bit of Velcro with two thin wires one black and one red coming out of it. I have put a pound coin next to it for scale.

 

[Laysula]

Couldn't seem to get the photo to attach. It's a small round plastic thing with a couple of wires sticking out about the size of a pound coin. looks like there is a small printed circuit inside. My initial thought that it was a buzzer but what for I don't know.

 

[Bilgediver]

I have a Raymarine 54 e vhf. The gps lead is semi connected to this. Before I connect it properly, is it a gps aerial? Does anyone recognise it? It is stuck to the side of the hull high up with a bit of Velcro with two thin wires one black and one red coming out of it. I have put a pound coin next to it for scale.

MostDSC radios require a GPS unit which is a mushroom shaped object that usually is sited on the taffrail . It is a complete unit and contains the gps receiver and antenna . The cable from it carries the data which feeds the radio with the time and position.

Your radio may also have an extension speaker.

 

[PetiteFleur]

I bought one like you describe years ago - fitted with a bnc? plug. I can't remember what I used it with but from memory it worked.(maybe) Now redundant but still on the boat...

 

[Bilgediver]

Usually the GPS with a BNC conector are just the antenna and this feeds a separate GPS unit. The op is requiring a similar looking item but the receivier is also in the dome. These usually come with bare wires to connect to chart plotters and VHF radios.

 

[William_H]

Not likely to be a GPS antenna as they require 3 wires ground power in and data out. ol'will

 

[TSB240]

External Speaker Connections; Grounding; Gps/Nmea Data - Raymarine Ray54E Owner's Handbook Manual [Page 17] | ManualsLib
Rtfm!
I would guess the red cable is nmea out+ and the black cable is nmea out-
That's a virtual pint please.

 

[FishMan]

A picture would be best, but as the wires are black and red, they are unlikely to be NMEA, and more likely to be power.
NMEA data wires are usually green/yellow/white.

 

[PaulRainbow]

External Speaker Connections; Grounding; Gps/Nmea Data - Raymarine Ray54E Owner's Handbook Manual [Page 17] | ManualsLib
Rtfm!
I would guess the red cable is nmea out+ and the black cable is nmea out-
That's a virtual pint please.

Afraid not. The device the OP describes is nothing like the GPS shown in the manual you linked to. The one in your manual will have more wires than the two NMEA ones shown, it will also have power wires. The OP describes a device the size of a £1 coin with only two wires, that isn't likely to be a GPS receiver.

 

[trevbouy]

Sounds like it's the warning piezo buzzer if it's pound coin size

 

[PaulRainbow]

Sounds like it's the warning piezo buzzer if it's pound coin size

It does sound like a buzzer, but they VHF does not have one, might be a Seatalk buzzer, incorrectly connected.

A pic would help a lot.

 

[Laysula]

 

[Laysula]

Done it. this is it.

 

[William_H]

Definitely a piezo buzzer. The hole in the middle lets the sound out. Could be used for anything needing an alarm. ol'will

 

[PaulRainbow]

Definitely a piezo buzzer. The hole in the middle lets the sound out. Could be used for anything needing an alarm. ol'will

Absolutely correct, it's a buzzer.

 

[PaulRainbow]

Done it. this is it.

I assume you are trying to get GPS coordinates on the VHF ? What other electronics do you have fitted if that's the case ?

 

[Laysula]

I assume you are trying to get GPS coordinates on the VHF ? What other electronics do you have fitted if that's the case ?

Cheers Paul
I have St 50 gps, log , depth. wind and autopilot with a repeater at the nav desk. The gps aerial is spliced into (I think) the seatalk, cable at the repeater at the navdesk..
Can I connect my radio gps wires, yellow and green, to this?

 

[oldgit]

Typically the type found on the rear of the instrument panel for overheat or low oil pressure alarms etc
Replaced a couple on my Volvo Penta gear.
Cheap to buy from ebay should you ever need one, get the loudest one available.
NEW Piezo Buzzer DC 12V 90dB Alarm Bell Intermittent Sound - SPECIAL OFFER | eBay

 

[PaulRainbow]

Cheers Paul
I have St 50 gps, log , depth. wind and autopilot with a repeater at the nav desk. The gps aerial is spliced into (I think) the seatalk, cable at the repeater at the navdesk..
Can I connect my radio gps wires, yellow and green, to this?

The GPS itself will be Seatalk, you cannot use that directly. If you have a ST50 Multi, that will have an NMEA out, as will the Autohelm, you can use either of those.

 

[Laysula]

The GPS itself will be Seatalk, you cannot use that directly. If you have a ST50 Multi, that will have an NMEA out, as will the Autohelm, you can use either of those.

Cheers. I'll have a proper look today .