CT212 Oscillator Test No1

[ppppenguin]

The output waveform is the same and also another owner of one has posted his output waveform and it is also the same so they are all like it.
I will have to look for some connectors and make some external filters.
The waveform is a lot better on the higher bands where it would have been used the most in its day.

That waveform you've shown us is very rough indeed. I would have expected better from a serious piece of professional kit.

I suppose the valves just aren't quick enough to muck up the waveform at higher frequencies. I'm sure this is a daft question but I'll ask it all the same. Are you using a scope with sufficient bandwidth to show harmonics of the higher frequencies?