I bought a pair of DIY HAM band receivers several years ago, from Ramsey. Nice kits, but tuning was/is iffy. They both use potentiometers to control tuning and my hands shake so much that I can't lock on to a target frequency, especially since they only have about 300 degrees of a circle to cover the whole tuning range. Kind of frustrating so I'm tryiing to think of a 'workaround'.
I love Velvet Verniers, but they haven't been made for years, and I can't afford $50 per tuning knob on kits that originally cost less than $25.
One thing that came to mind was some kind of digital tumer. (Up button, down button and an LCD readout, of . . . something.) Now I know there are are a lot of things like this in use, but I don't even know what to Google.
I'm thinking of replacing the tuners with some more expensive versions, but, before I go there, I'm wondering if there is a cheaper solution already out there.
The bottom line is that I would like to replace a pair of variable resistors with something with more accuracy, and selectivity.
Does anyone have any suggestions?
I love Velvet Verniers, but they haven't been made for years, and I can't afford $50 per tuning knob on kits that originally cost less than $25.
One thing that came to mind was some kind of digital tumer. (Up button, down button and an LCD readout, of . . . something.) Now I know there are are a lot of things like this in use, but I don't even know what to Google.
I'm thinking of replacing the tuners with some more expensive versions, but, before I go there, I'm wondering if there is a cheaper solution already out there.
The bottom line is that I would like to replace a pair of variable resistors with something with more accuracy, and selectivity.
Does anyone have any suggestions?