About 5 years ago I did a design for a simple TRF receiver that used small Xicon (Mouser) tunable coils in the 50-200 nanohenry range, size
10 mm and 7 mm series.Now they've gone to a minimum of 5000 pieces per value and by my calculations that will take me well into the next century at current use rates.
Anybody got a good source for small tunable coils, preferably shielded?
Thanks,
Jim