Good news Pete. I’m always glad to see another 5100B on the air. I had one as a JN way back when and got my current one around 1998 or so and have been using it ever since. It’s been a great radio and solid performer.
Joe, I also have a 5100. I pulled the modulator out for a rebuild a few years ago then got side tracked and it’s still on the shelf. I think I stopped as I couldn’t find Moe’s audio mods, and when I did I already had another project under way. I had it running on CW for a few months less the modulator and it worked fine; I need to get the modulator rebuilt one of these days. That was before I instituted my “only work on one radio at a time policy” – it keeps projects from getting sidetracked
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Gary did a rewind of a DX-100B modulator for me years ago and he did a good job.
Pete, I notice you have the 51SB-B with your unit. I have one and used it a few times. It’s not like pushing the LSB/USB button on a modern radio, is it!!