Your laptop probably uses modern lithium-ion batteries - cell phones and other consumer gadgets also have moved almost universally to them. And, increasingly, they're used in popular AA sizes in digital cameras and other devices.
Add a soundtrack to your workouts - invest in a DP 3400, CD or MP3 player. Adding music to your workouts can add interest and motivation while your train. Up-tempo music works best, but any kind of music that inspires you is great workout music.
When or if the digital signal is lost, the radio reverts back to the analog signal. The AM digital signal loses its static and buzz and produces a sound that is very much improved over the analog signal. The FM digital signal produces a sound that is very close to CD quality. The question most people ask is are the people willing to pay the high price for a HD radio? These cost between $100 and $600 and are made for the table top or installed in a car.
Batteries are needed at all times during hurricane season. You should purchase all sizes so they could be used for Mororola DP3400 Radio flashlights and fans.
Some things although not majorly necessary are just good to have. In unforeseen disasters you'll see that the Non-display Portable Radios simplest objects will serve a great function and can help you get through the situation. Matches or any means of creating fire can be a very reliable tool. Campfires will keep you and your family warm or alert rescuers. If you experience a shortage of potable water but are surrounded by murky water, you can use these matches to build a fire to purify water by boiling bacteria and other impurities.
The original definition was hybrid digital. Some have said that it is now a brand name for the inventing company ( iBiquity Digital Corp.). The common use seems to be simply HD motorola radio and defines the digital radio that captures the HD signals. The use seems to be more of a brand than anything else.
Replace them ever so often, by using them to water the plants and then re-filling with new water. I remember that we often do this back when I was growing up in the Philippines. Another thing we do to store water is during the rainy season, we place the drum under the down spout to save the rain water coming from the roof. This maybe used for bathing in case the water pipe breaks. If there are no calamities, we use them to water plants so it is not a total waste if summer has passed and no earthquake comes. Then when rainy season comes, we collect them again. This is a good idea because if water pipes break, you have something bathe with or flush the toilet.
For more info: Complete rules for international travel for U.S. residents can be found in the U.S. Customs "Know Before You Go" handbook (PDF file). The U.S. Customs website also has links to specific customs-related topics.
