Spectrum Elektrotechnik GmbH is introducing high-power Adapters of Product Category 8058-, working up to 18.0 GHz, which show In-series and Between-series Adapters of Types N and TNC. The units use special heat dissipating dielectric between center conductor and outer conductor, and have cooling fins to dissipate power to the environment. In addition the high-power hermetically sealed Adapter Series have been expanded as well, now operating to 18.0 GHz for N and TNC Series.