R.L. Drake

Drake Mods - PTO Notes

Authored by VE3EFJ


    By the time the R4B appeared, Drake had a solidly designed master oscillator - PTO (permiability tuned oscillator). From that time forward and with the exception of the TR5, Drake used pretty well the same PTO in all their equipment. Largely, the major difference was in the dial plates and gear box, but the *PTO* remained much the same. The PTO in the TR7 is much the same PTO in the TR4 which is much the same PTO in the RV7 which is ... you get the idea.

    The great news about this piece of trivia is that you can swap the PTOs around quite a bit, *providing* you can deal with the dial plates.

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