Building a PTO VFO

Wayne McFee All Messages By This Member #9398 Daniel, A PTO VFO is a pretty simple beast, and the tuning coil arrangement is very easy and cheap to build. I use some small pieces of double sided PCB material, a brass screw and brass nuts, a piece of plastic drinking straw and some enameled wire. The vender Chuck mentions built his gadget based on what he saw in my instructions for the Tin Ear Receiver. Personally, the fact that the brass screw moved in and out a quarter inch or so from the front panel was never an issue. The first part of the attached article outlines how to build the tuning mechanism itself and the rest of a PTO VFO. Hope it comes through OK.? Good luck with your build. 73, Wayne NB6M PNW 16 Part V hi rez.pdf PNW 16 Part V hi rez.pdf
Daniel KK4MRN All Messages By This Member #9403 Wayne, Thank you.? I think that will work.? 73 Daniel KK4MRN On Monday, April 21st, 2025 at 9:36 PM, Wayne McFee <nb6m@...> wrote: toggle quoted message Show quoted text Daniel, A PTO VFO is a pretty simple beast, and the tuning coil arrangement is very easy and cheap to build. I use some small pieces of double sided PCB material, a brass screw and brass nuts, a piece of plastic drinking straw and some enameled wire. The vender Chuck mentions built his gadget based on what he saw in my instructions for the Tin Ear Receiver. Personally, the fact that the brass screw moved in and out a quarter inch or so from the front panel was never an issue. The first part of the attached article outlines how to build the tuning mechanism itself and the rest of a PTO VFO. Hope it comes through OK.? Good luck with your build. 73, Wayne NB6M
ajparent1/kb1gmx All Messages By This Member #9417 IF you want a more interesting mechanism see ? ? Its a kit of board that duplicates a lipstick mechanism. That eliminates the screw moving in and out of the panel and results in a simple rotating knob. ? There are other ways to do that as well. ? ? Allison ? ? ?

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Building a PTO VFO