by Nick H-J » Wed Feb 03, 2010 4:46 pm
GPS:
GPS is great to have with you. We took a Garmin 76CSx (a larger hand-held unit) which was great, right up until if broke in Panama. We went without GPS for the rest of the trip since Garmin wouldn't replace the unit outside the U.S. It helps to have GPS, and can save you time, but asking directions is a close second, if you speak some spanish.
Internet:
In terms of internet, I would buy and install a wireless network booster antenna on the vehicle. For our next road trip we will definitely have one. Sailors use them frequently to boost incoming and outgoing wireless signals. Essentially it broadens your searchable area to find and use an unsecured wireless networks. We did not have one so I'll have to do a little research before I recommend one. I'll check into it and post something on the issue. Surprisingly, there are an abundance of unsecured wireless networks you can use for free, as well as internet cafes in most of the Americas. We were able to find plenty of internet access (mostly for free) without a booster. I would install a booster so that I didn't have to drive around looking for an unsecured network.
Phone:
With regard to phones, you can buy a cheap GSM (SIM card type) phone nearly anywhere south of the border. You cold buy a tri-band, or quad-band GSM phone in the states before you leave, but they are expensive and will work no better than the cheap ones you buy south of the border. When you move from country to country you will sometimes have to buy a new SIM card for the phone (which will have a different number).
Skype:
Skype is a great option for staying in touch with people back home. You can even set up skype to work with your cell phone as you travel through various countries.
This is a great set of questions.
I will compile a bunch of recommendations for tech gear and tips and post it with details shortly.