1.In a hospital-based, case-control study, researchers looked for an association between mobile phone use and either glioma (a type of brain cancer) or acoustic neuroma (a benign tumor of the nerve sheath). No statistically significant association was found between mobile phone use and acoustic neuroma. There was also no association between mobile phone use and gliomas when all types of types of gliomas were consid- ered together. It should be noted that the average length of mobile phone exposure in this study was less than three years.

When 20 types of glioma were considered separately, how- ever, an association was found between mobile phone use and one rare type of glioma, neuroepithelliomatous tumors. It is possible with multiple comparisons of the same sample that this association occurred by chance. Moreover, the risk did not increase with how often the mobile phone was used, or the length of the calls. In fact, the risk actually decreased with cumulative hours of mobile phone use. Most cancer causing agents increase risk with increased exposure. An ongoing study of brain cancers by the National Cancer Institute is ex- pected to bear on the accuracy and repeatability of these re- sults.1

2.Researchers conducted a large battery of laboratory tests to assess the effects of exposure to mobile phone RF on ge- netic material. These included tests for several kinds of ab- normalities, including mutations, chromosomal aberrations, DNA strand breaks, and structural changes in the genetic material of blood cells called lymphocytes. None of the tests showed any effect of the RF except for the micronucleus as- say, which detects structural effects on the genetic material. The cells in this assay showed changes after exposure to simu- lated cell phone radiation, but only after 24 hours of exposure. It is possible that exposing the test cells to radiation for this long resulted in heating. Since this assay is known to be sen- sitive to heating, heat alone could have caused the abnor- malities to occur. The data already in the literature on the re-

sponse of the micronucleus assay to RF are conflicting. Thus, follow-up research is necessary.2

FDA is currently working with government, industry, and aca- demic groups to ensure the proper follow-up to these indus- try-funded research findings. Collaboration with the Cellular Telecommunications Industry Association (CTIA) in particular is expected to lead to FDA providing research recommenda- tions and scientific oversight of new CTIA-funded research based on such recommendations.

Two other studies of interest have been reported recently in the literature:

1.Two groups of 18 people were exposed to simulated mobile phone signals under laboratory conditions while they per- formed cognitive function tests. There were no changes in the subjects’ ability to recall words, numbers, or pictures, or in their spatial memory, but they were able to make choices more quickly in one visual test when they were exposed to simu-

lated mobile phone signals. This was the only change noted among more than 20 variables compared.3

1Muscat et al. Epidemiological Study of Cellular Telephone Use and Malignant Brain Tumors. In: State of the Science Symposium;1999 June 20; Long Beach, California.

2Tice et al. Tests of mobile phone signals for activity in genotoxicity and other laboratory assays. In: Annual Meet- ing of the Environmental Mutagen Society; March 29, 1999, Washington, D.C.; and personal communication, unpub- lished results.

3Preece, AW, Iwi, G, Davies-Smith, A, Wesnes, K, Butler, S, Lim, E, and Varey, A. Effect of a 915-MHz simulated mobile phone signal on cognitive function in man. Int. J. Radiat. Biol., April 8, 1999.

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Audiovox CDM9100 manual

CDM9100 specifications

The Audiovox CDM9100 is a sophisticated mobile phone that gained popularity in the early 2000s, appealing to users who desired a blend of functionality and style. This device is characterized by its compact design, ease of use, and an array of features that cater to the needs of mobile communication.

One of the standout features of the CDM9100 is its dual-band capability, allowing users to connect on both the 800 MHz and 1900 MHz networks. This flexibility ensures better coverage and a more reliable connection in various regions, making it ideal for those who travel frequently or live in areas with varying network availability.

The phone sports a vibrant display with a resolution that delivers clear and sharp graphics, making it easier for users to navigate through the menu and read text messages without straining their eyes. Its intuitive interface simplifies operation, allowing even novice users to quickly learn how to use the phone's functions.

In terms of multimedia capabilities, the Audiovox CDM9100 includes a built-in camera, which was a notable feature for its time. This camera allows users to take pictures on the go, providing an essential tool for capturing spontaneous moments. Though the quality may not compare to today’s smartphone cameras, it served the purpose of sharing memories with friends and family.

The device also supports text messaging, which became an essential mode of communication during its era. With features such as predictive text input, users can type messages more efficiently, thus enhancing communication speed. Additionally, the phone supports polyphonic ringtones, allowing users to customize their devices with a variety of sound options.

Battery life is a crucial aspect of any mobile phone, and the CDM9100 delivers with a rechargeable lithium-ion battery that provides ample talk time and standby time. This longevity ensures that users can stay connected throughout their day without frequently searching for a charger.

Another notable characteristic of the Audiovox CDM9100 is its lightweight and slim design, making it easy to carry in a pocket or purse. This portability feature resonates well with users who prioritize convenience in their daily routines.

In summary, the Audiovox CDM9100 is a compact mobile phone that offers dual-band connectivity, a built-in camera, customizable ringtones, and an easy-to-use interface that caters to both communication and multimedia needs. Its reliability and portability have made it a memorable device in the landscape of early mobile technology.