Here you have some information about different units of the HC-10 and SPC-10 SSB converters. Please, e-mail any corrections or information about new units to add to the list. Thanks!.
This unit arrived in good condition except for the front panel finishing: it was darkened and had a non-homegeneus colour. After some 'Titanlux' polish paste applications, I got a much better looking face. It is complete, with most of the tubes original (and still in good condition), but has some trouble with LSB, which I'm trying to solve. As a curiosity, I found two cold solder joints (more than 30 years old!), which produced intermitent failures. One thing it is missing is the matching power connector (any spare around?).