[Amps] SB-220 Plate Tuning Capacitor

[Peter Chadwick]

>From what Colin told me in a private email, it seems to me that the SB220 bandswitch is right on edge for the kW input power level, and too small at 1500 watts for safety. Really needs a bigger one, with a heavier indexing mechanism. Now this isw ithout any parasitics, changing band instead of tuning or anything else. Then there's a problem for people who get arthritis in their hands, and that really needs a bar type knob or even a door handle type arrangement. I can't say that as a general rule, I particularly like round knobs on switches - I prefer the bar types such as on the old TU units for the BC191. They also have the advantage that you know immediately if you grab the bandswitch.  I believe that's called 'ergonomics'.

73
Peter G3RZP