This unit works well considering it's dated technology. It came with the yacht but I have since bought a Garmin GPS Map 72H which has the same pages ie. Satellite, position, compass/steer, highway and plotter.

It tracks 8 satellites in view and 4 over the horizon. The menu operation is similar to the Garmin and quite intuitive.

The main drawbacks of it are that it runs off 4 AA batteries and chews them up fairly quick and it requires memory dumps fairly often when navigating routes or plotting.

Apart from that it makes for a good back up unit that will give you Lat and Long in fairly short time. What that means is that the internal almanac is relevant.

The unit comes with the swivel/tilt holder, external power/data cable, the book and the original box that it came in.

Again I am offering it to" theselkie" first, after which it goes to the first to PM me.

Here it is.

<div>Hi HG,
Unfortunately, reducing voltage is not as simple as using a resistor such as this.

The voltage drop produced by a resistor is dependent on the current passing through it - that is, the current drawn by the device connected to it.

The voltage drop can be calculated from E=IR, where E is the voltage drop, I is the current flowing through the resistor (ie. the current drawn by the device) and R is the resistance (in this case 4 ohms).

But, just like life, it's not that simple - this is because the current drawn by a device is usually dependent on the voltage applied to it, which is dependent on the voltage drop. If this seems a circular argument, unfortunately it's true.

In practice, it's quite difficult to calculate the value of resistance necessary to produce a given voltage drop for a particular device.

The solution, thankfully, is simple. Use a 'Voltage Regulator'. This device provides a stable, predetermined voltage output independent of the current drawn from it.

see this for example
www.jaycar.com.au/7806-6v-1a-voltage-regulator/p/ZV1506

Regards,
Allan

Damn CanAussie your PM must have beaten mine by mear minutes.

Oh well such is life