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.

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...

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. See similar questions...

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...

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...

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...

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...

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...

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...

MTNL's Broadband service is called as "Tri-Band". This is based on ADSL 2+ technology which is the most advanced technology in the world. 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...

No, the DA4000 is a direct connect unit only and must be physically connected to your cell phone or cellular device with the appropriate cable. Click here for a list of available cell adapter cables. See similar questions...

This feature is used to help the learning process for novice pilots. A value of 50% dual rate would cut the total servo travel by half. The makes the heli less sensitive. A good starting value is about 70%. Increase by 10% as you get comfortable until you reach 100%. If you are beginning forward flight, but still think 100% is too touchy, then use about 30% Expo with 100% dual rate. See similar questions...

The PYRAMID BANDS have been performing since 1993. In addition, each of our musicians brings many years of musical experience. See similar questions...

Since a majority of our performances are private functions, your best bet is to call us about our upcoming schedule. Usually it is OK to come out to a wedding and listen to/view the band. You must be appropriately attired in dress clothes. Each function and facility has its own guidelines for viewers, including some that do not allow any viewers. Please also refer to our band rehearsals. See similar questions...

Names can be tricky. Different countries have different rules and laws about names, and those rules apply differently. Sometimes a person has registered their name with a government office. Sometimes a person has retained legal counsel and vigorously defends the use of their name and their identity. Many others "just got there first." TuneCore is not part of these issues. See similar questions...

The Band is tightened by accessing the port with a needle. This is most commonly done in the office. Some surgeons do it at the hospital under x-ray guidance, but this is generally not necessary, and makes the procedure much more expensive. For patients with very thick abdominal walls, it may be more difficult to find the port. In our office we have an ultrasound machine which makes it possible to access most ports without need for x-ray. See similar questions...

This is when the Band actually erodes into the stomach. It is a more serious problem, and generally requires removal of the Band. Band erosion is thought to be related to placing too many sutures (or too tight sutures) at the time of Band implantation. Surprisingly, Band erosion is often unnoticed. Occasionally the port will become infected if bacteria track along the catheter out to the port. Other times patients will stop losing weight. Diagnosis often requires an endoscopy. See similar questions...

Although the LAP BAND® System is not meant to be removed, it can be. In some cases this can be done laparoscopically. Surgeons report that the stomach generally returns to its original shape once the band is removed. After the removal, though, you may soon go back up to your original weight. You may also gain more. See similar questions...