[Arran]

Vlad;
I also have an R-646 but it's in rough shape, the chassis is complete, but the speaker is missing, and the cabinet needs rebuilding. I think that the Rogers sets in this era were based around the same designs as Grigsby-Grunow Majestic sets, except in Canada they were sold under both the Rogers and Majestic brands. The tube shields used to have round covers with a series of holes punched in them, my chassis still has two of them, the third is missing. I never did get my set going, it had not only a failed audio interstage transformer, but a failed audio output transformer. I could have bought a better example about 15 years ago in an antique shop, it was electrically restored, or at least repaired, but I didn't have $150 to spare at the time, they are good performers like their Majestic cousins are though.
Regards
Arran