I have ONE EACH DX 100 and DX 100B in line for refurbishing after my Viking 1 and Viking 11 are ready to go on line. Looking forward to getting them fired up and ON THE AIR. Back in 1961 and 1962 I used a DX 100 on AM and then on SSB with a SSB generator. I had no 1625 modulator tubes so I converted it to use 807 modulators. It worked OK. 73, John, K5PGW