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Appendix 151
M-Ratings: Phones rated M3 or M4 meet FCC requirements and are likely to generate less interference to
hearing devices than phones that are not rated. M4 is the better/higher of the two ratings.
T-Ratings: Phones rated T3 or T4 meet FCC requirements and are likely to be more usable with a hearing aid’s
telecoil than phones that are not rated. T4 is the better/higher of the two ratings.
RHOD500 complies with the FCC’s requirements for hearing aid compatibility when using the CDMA air
interface. The M rating in this mode is M4 and the T rating in this mode is T3.
Your hearing device manufacturer or hearing health professional may help you
find this rating. Higher ratings mean that the hearing device is relatively immune
to interference noise. The hearing aid and wireless phone rating values are then
added together. A sum of 5 is considered acceptable for normal use. A sum of 6 is
considered for better use. A sum of 8 is considered for best use.
In the above example, if a hearing aid meets the M2 level rating and the wireless phone meets the M3 level
rating, the sum of the two values equal M5. This should provide the hearing aid user with “normal usage” while
using their hearing aid with the particular wireless phone. “Normal usage” in this context is defined as a signal
quality that is acceptable for normal operation.
This methodology applies equally for T ratings. The M mark is intended to be synonymous with the U mark. The
T mark is intended to be synonymous with the UT mark. The M and T marks are recommended by the Alliance
for Telecommunications Industries Solutions (ATIS). The U and UT marks are referenced in Section 20.19 of the
FCC Rules. The HAC rating and measurement procedure are described in the American National Standards
Institute (ANSI) C63.19 standard.
For information about hearing aids and digital wireless phones
FCC Hearing Aid Compatibility and Volume Control:
http://www.fcc.gov/cgb/dro/hearing.html
Gallaudet University, RERC:
https://fjallfoss.fcc.gov/oetcf/eas/reports/GenericSearch.cfm
RHOD500 has not been shown to comply with any hearing aid compatibility requirements when using the GSM
air interface and is not configured to use the GSM air interface in the United States. Hearing aid or cochlear
implant users should note this fact and consult the service provider about return and exchange policies should
such operation prove to be unacceptable.
SAR Information
Head: 0.681 W/kg @10g (CE), 1.410 W/kg @1g (FCC)
Body: 0.430 W/kg @10g (CE), 0.589 W/kg @1g (FCC)
THIS MODEL DEVICE MEETS THE GOVERNMENT’S REQUIREMENTS FOR EXPOSURE TO RADIO WAVES. For body
worn operation, this phone has been tested and meets the FCC RF exposure guidelines when used with the
HTC Corporation. accessories supplied or designated for this product. Use of other accessories may not ensure
compliance with the FCC RF exposure guidelines.
Your wireless mobile phone is a radio transmitter and receiver. It is designed and manufactured not to
exceed the emission limits for exposure to radio frequency (RF) energy set by the Federal Communications
Commission of the U.S. Government. These limits are part of comprehensive guidelines and establish permitted
levels of RF energy for the general population. The guidelines are based on the safety standards previously set
by both U.S. and international standards bodies:
American National Standards Institute (ANSI) IEEE. C95.1-1992.
National Council on Radiation Protection and Measurement (NCRP). Report 86. 1986.
International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1996.
Ministry of Health (Canada), Safety Code 6. The standards include a substantial safety margin designed
to assure the safety of all persons, regardless of age and health.
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