You have just purchased a quality unit which is the most advanced and thoroughly developmental and production tested HF Speech Processor available to the discerning amateur radio operator! The MAGNUM SIX is quality engineered in every respect and all components have been specially selected to assure long life with trouble free operation. Each unit is subjected to a minimum of 24 hours of continuous "burn-in" operation before final test, inspection and assembly into its case. The layout and construction of your new MAGNUM SIX incorporates state-of-the-art aerospace engineering techniques to assure maximum port-to-port isolation, uses a selected bandpass filter and is constructed with ground plane double-sided glass epoxy circuit board material. Your MAGNUM SIX has been designed and developed by experienced professionals who are also ardent radio amateurs. Our goal has been to achieve a significant advance in amateur radio SSB communications. We know that once you have properly placed your MAGNUM SIX on the air, you will agree that we have achieved that goal. Good luck and good DX!