SEA 235 HF SSB marine & ham radio with IF DSP and DDS

This is the SEA-235 HF SSB marine radio, 150 watts USB/LSB/CW and FSK (RTTY). This radio was made in the USA by Stephens Engineering Associations (SEA). The radio is state of the art; it has an IF-DSP (all filters and modulation/demodulation are done in the digital domain) and it uses a DDS (Direct Digital Synthesizer) allowing for 10 Hz finest step resolution. Also, the radio has 200 non-volatile, user-programmable memory locations. The one you see here in this video is like new, it has never been used mobile and/or on a ship so there is NO corrosion. The primary target market for this radio was marine applications, for use on high-sea going vessels. But it also has an (undocumented) "amateur" mode, which means the engineers who designed this radio were probably hams! Because of this ham mode, the radio is extremely usable on the HF ham bands, as this video will show. In the "marine" (default) mode, it offers almost a thousand pre-programmed marine frequencies (channels if you want), for use in any region in the world.