UHF to GPS

[meekerman]

I know it is simple two wires but, I only have a red and black coming out of my radio. I have a Navman 7100, do I need to buy a NMEA 0183 connector of some sort with wires connected to it?

 

[Daverw]

Are you sure it only has red and black? And not others cut back as the wiring diagram shows nmea as other colours

 

[Bilgediver]

It looks like there is a Com. port which may be a Phono socket such as used by Icom If this is the case it will use normal Phono convention ie the centre pin is positve and the rim negative, Seems the Manual lacks pictures of the connections.

You also have to set up the com port as per the manual.

VHF7100US VHF MARINE RADIO User Manual USERS MANUAL Navico Auckland

 

[Buck Turgidson]

Pedant mode on:
GPS transmits in the UHF frequency band.
Are you asking how to connect a GPS receiver to a VHF radio?

Pedant mode off.

 

[Frankklose]

On the navman 7100 is a cable with a 8? pin DIN socket. Normally was a cable supplied with the Din connector colours are green and yellow

 

[meekerman]

On the navman 7100 is a cable with a 8? pin DIN socket. Normally was a cable supplied with the Din connector colours are green and yellow

You are correct about the 8-pin connector. Although, mine does not have the connector or any wires coming from it, it was giving to me by a buddy. Where could I get one or do I have to make one? If I have to make one, what pins would be green and yellow?
Thanks, greg

 

[jdc]

Pedant mode on:
GPS transmits in the UHF frequency band.
Are you asking how to connect a GPS receiver to a VHF radio?

Pedant mode off.

Pedant mode back on:
The IEEE definitions are
UHF 300MHz - 1GHz,
L band 1GHz - 2GHz.
So GPS L2 (and Glonass, and Galileo) around 1.23 GHz are all L-band not UHF.
It's true the ITU uses the term UHF up to 3GHz, but they are alone (and ignored) in this anachronistic usage.
Pedant off again!

Like you, I suspect that the OP didn't mean to put UHF but meant VHF.

 

[Buck Turgidson]

Pedant mode back on:
The IEEE definitions are
UHF 300MHz - 1GHz,
L band 1GHz - 2GHz.
So GPS L2 (and Glonass, and Galileo) around 1.23 GHz are all L-band not UHF.
It's true the ITU uses the term UHF up to 3GHz, but they are alone (and ignored) in this anachronistic usage.
Pedant off again!

Like you, I suspect that the OP didn't mean to put UHF and meant VHF anyway!

Pedant mode on:
IEEE is an industry group. ITU is a UN agency.
And I believe L and S bands are RADAR specific definitions (but I may be wrong as I'm too old and tired to check which is odd for a pedant )
In my RAF training L ban and S band = 0 points.
Pedant mode permanently suspended

Yes I guessed what the OP meant ;-)

 

[KevinV]

I don't know how useful this is, it's for the 7200. I have mine in bits at the moment, so could measure through the connector cable to see which is which if that helps? I'm not sure what the difference is between 7100 and 7200

 

[KevinV]

I thought this might be useful too - the cable with the 8 pin plug on it connects to motherboard on the top. If yours is cut off on the outside you could splice in here..

 

[snowbird30ds]

I had a navman 7100 once and they are usually given to people for a reason, don't spend too much time or money messing with it just junk it and get a good radio, they are not good for reliability.
Sorry to be a proper but that was my experience with one and have heard the same from a few others, the same unit comes under other names too.
But yellow and green come to memory as nmea colours in the proper lead but it was a good few years ago.