What is this circuit component?

[Skippy]

The only other low freq crystal/resonator type parts I can think of used in detectors from that time are those used in Fisher machines, 1266, CZ's and similar models. Were they 60 KHz or thereabouts?

[Mrand]

Here is my solution with 220kHz quartz problem in Wilson detector. Is retuned in range 200-250kHz. It work correctly and exactly. Besides one can connect to Wilson, Whites BM950 coil (6.592kHz).
Mrand

[dbanner]

Your solution may suffer from slight drift? Which might make detector a bit unstable? Maybe use the nearest value crystal available, and retune your coil to resonate accordingly by adjusting the value of tuning caps? Use 200khz will give 6.25khz. Or use 400khz divide by 64(connect to divide by 64 pin instead).

[Mrand]

My solution work correctly over 10 year. I maked this for use Whites BlueMax 950 coil. This is sufficiently stable when you use high quality styroflex or SMD C0G capacitor and 10-turn trimmer. The additional advantage is the easy exchange of coils.

[Arthur-Canada]

My solution work correctly over 10 year. I maked this for use Whites BlueMax 950 coil. This is sufficiently stable when you use high quality styroflex or SMD C0G capacitor and 10-turn trimmer. The additional advantage is the easy exchange of coils.

So you have used a White's coil on a Wilson this way?