SAN DIEGO, CA, MAY 12, 2009 – All HME DX Series wireless intercom systems now feature
Spectrum Friendly™ technology, HME’s unique advantage for interference-free operation in the
increasingly crowded 2.4 GHz frequency band. This new technology enables broadcast and
theatrical production crews to avoid emerging frequency conflicts by designating the 2.4 GHz
operating frequency range – low, high or full band.

The increasing use of the 2.4 GHz Industry Scientific and Medical (ISM) wireless spectrum is
attributed to its global availability and license-free requirements. Existing hardwired
technologies are gradually being designed to operate in the 2.4 GHz band.

While generally not a problem when separated, multiple applications and multiple users of the
same applications in close proximity can result in additional risk for trouble free operation. The
new Spectrum Friendly technology further ensures that HME products do not add interference
to the spectrum for other essential wireless services in the vicinity, like DMX lighting.

According to HME Pro Audio Product Manager Rick Molina, “Spectrum Friendly technology
provides a framework for wireless applications to coexist as good neighbors. It also makes it
possible for production crews using HME base stations to double the number of possible
wireless headset users.”

For more information about HME Spectrum Friendly products, call 1-800-848-4468 in the U.S.
or 1-858-535-6060 internationally. Log on to www.hme.com.