Dual band phones tend to work in the UK and Europe and most of the world (GSM 1800 and GSM 900), whilst in America you need a phone that can take GSM 1900 so most often a Tri band or Quad band phone is the best option.

The Vodafone Datacard is a quad-band card GSM 850/900/1800/1900. The Vodafone USB Modem is Tri-band GSM 900/1800/1900. See similar questions...

A tri-band phone operates at three supported frequencies, such as 900/1800/1900 MHz or 850/1800/1900 MHz. A dual-band phone operates at two frequencies, such as 850/1900 MHz or 900/1800 MHz. See similar questions...

These terms define the working frequencies of GSM cellular phones on particular networks. There are 3 working frequencies - 900/1800/1900. GSM phones that work on 2 frequencies are called dual band while those that work on 3 frequencies are called tri-band. This facility allows the user to use his/her cell on different networks, and beneficial for international roaming. See similar questions...

You can get a dual band antenna that will cover all 3 modes (analog, digital cellular and digital pcs) or, as mentioned above, focus on where you're having reception problems. First find out what network your phone is actually using in your city by calling your service provider. Just ask if you're in a 800MHz range area or 1900MHz range area. See similar questions...

A Quad-band GSM phone operates on the four internationally designated GSM frequencies- 850, 900, 1800 and 1900 MHz. The capability to seamlessly handover between the four bands offers operators major capacity gains. The 850 frequency is used in North America, Latin America and parts of the Caribbean. See similar questions...

A Tri-band GSM phone operates on the three internationally designated GSM frequencies- 900, 1800 and 1900 MHz. The capability to seamlessly handover between the three bands offers operators major capacity gains. See similar questions...

Tri band refers to the physical frequencies which your mobile phone can operate on. The three international frequencies ranges or bands reserved for GSM are 900MHz, 1800MHz and 1900MHz. In Australia, as at the time of publication, most GSM networks still use only the 900MHz frequency band. Soon, GSM carriers will be upgrading their networks to support the 1800MHz band also. See similar questions...

Dual band refers to the radio frequencies which your mobile phone can operate on. The three international frequencies ranges or bands reserved for GSM are 900MHz, 1800MHz and 1900MHz. In Australia, most GSM networks use the 900MHz frequency band although some networks are now using the 1800MHz frequency band also. See similar questions...

Feeding any multi-band array often is a challenge. The frequency range varies from 14 MHz to 28 MHz and the source impedance for each band may vary 2:1 in value. A quad is an array of three or more separate antennas, each with an independent feed point and elements occupying electrically different locations in the array. Methods of feeding in the past have been to co-locate all the feed points and using a single coax feed. With an antenna tuner in the line this method can give good results. See similar questions...

These terms refer to the occupancy of the rooms. Double = 2 adults per room, triple = 3 and quad = 4 adults per room. (adults = 17 years or older) All our rates are based minimum 2 adult occupancy. When there is only 1 adult in the room, the first child will be considered an adult for pricing purposes. Top See similar questions...

Some VHF/UHF rigs are capable of acting as a cross-band repeater, operated by carrier-sense. Unless these are licensed as a repeater (with a GB3. call sign) or being operating by an emergency communications group under a current 'talk-though' permit then they may not be used as a repeater. This is a case of Radio Frequency Interference and the correct term is 'Electromagnetic Compatibility' or EMC. See similar questions...

Co-extruded is when TWO colors of HDPE form a two-color produce. Tri-Extruded is when THREE colors of HPDE form a three color product. See similar questions...

Dual band refers to cellular telephones that are able to operate on two different frequency bands, such as GSM 900 and GSM 1900. If a phone has dual band capability, it automatically scans for the strongest signal and switches Networks - even during a call within the same operator's Network. See similar questions...

The cabbage patch kid seems to have historically changed positions in Brendan's area. It used to be in the back, then it moved up front, and from the way I've seen it, it seems to be cut in half, and coming out of the drums, with arms stretched out and screaming. Rather like one of the escaping souls in Nightmare on Elm Street 6." In the very early days, John used to carry his harmonicas around in an old lunchbox. See similar questions...

Some titles are presented on DVD Video in a "Dual Ratio" format - that means you are given a choice of viewing the film in either the "panned and scanned" or "Widescreen" format. This can be done by either using a double-sided disc (one version of the film on each side) or a dual-layer disc (where you would use the interactive menu to select your viewing preference). Storage capacity and timing factors are usually the main determinate of using the "dual ratio" format. See similar questions...

Dual-Fuel can be defined as the simultaneous combustion of two fuels. In the case of the Dual-Fuel System, natural gas is utilized in conjunction with diesel fuel to operate the engine. After conversion, the engine is able to operate on either 100% diesel fuel, or alternately, on a mixture of diesel fuel and natural gas. At no time is the engine able to operate on natural gas exclusively. See similar questions...

A dual rated heater can be wired to either of the 2 voltage ratings listed on the product identification label. However, the wattage output will decrease with the lower voltage. For example: A 240/208 dual rated heater can be wired to either a 240 volt or a 208 volt supply. A 1500 watt fan heater will draw 1500 watts wired to 240 volt and 1125 watts (75% of 240 volt rating) wired to 208 volt. See similar questions...

It is called a Dual Agency when an agent, brokerage or company is representing both the buyer and seller. Although legal, dual agency nevertheless comes with an inherent conflict of interest as the agent attempts to fairly represent two opposing clients and collect the full commission. Buyers: Consider working with a buyer's agent who represents you exclusively (not both you and the seller) and is more likely to work with your best interests at heart. See similar questions...

Yes. As long as you have a connection to the Internet, you can use PC-to-Phone anywhere in the world, to place calls to call any phone in Thailand. See similar questions...