If you have satellite TV on your boat you know that voltage matters. Boats generally have 12 volt DC current, but larger boats will have an AC inverter so you can plug in anything you want. Now, that’s fine if you’re staying in the US but hey… I’m speaking to you really wealthy folks out there. If you sail across the world then you’re just as likely to have 220 or 240 volt current running through the vessel.
Your average American doesn’t see 220 volt power much except when connecting appliances, but it’s the standard in much of the world. If you plug in a 110 volt device (as everything in the US is) into a 220 volt outlet, something’s going poof or getting fried, sure as shooting. You can use a very expensive travel transformer to make sure you don’t have that problem, but there’s a better way — make sure all the things you want to have on your vessel support multiple voltages.
The key is looking on the power supply and seeing the rating. The picture above is from a DIRECTV HR24-500 and it shows the voltage input is between 100 and 240 volts, between 50 and 60 hertz. If you see that on everything you bring onboard, you’ll have no problem. The print might be really small or really fine but it’s always there. If you have a multivoltage power supply then all you need is the right cord.
In the case of DIRECTV receivers, the HR24-200, HR24-500, H24-200, and H24-700 all have multivoltage power supplies. The HR24-100 and H24-100 do not. Some older receivers also have multivoltage power supplies.
To plug one of these compatible receivers into a 220-240 volt outlet, you need the cord that’s right for your country. Solid Signal doesn’t carry them due to the high price of importation, but you can find them on ebay or amazon’s localized site for the country where your boat was built. The side that plugs into a DIRECTV receiver is called a polarized C7 and using that search term will get you what you want. All power cords are just wires so any generic power cord that fits both sides will work.
It’s worth noting that technically it’s against your warranty to use any cord but the one supplied by DIRECTV but if you have a multivoltage power supply the odds of having any sort of a problem are going to be pretty slim.