This would work better if you kept it in
this thread. However, if you could post drawings of exactly what you have and explain in detail what doesn't work that would help also.
The field strength meter in the linked thread uses a 1N34 Germanium diode. The 1N34 is a classic and I haven't seen one in decades, however any similar germanium should work as a detector but you want germanium and not silicon for circuits like the one linked to.
Field strength meters can be pretty open as to bands or actually in more complex versions selectively tuned. Anyway, I would continue in your existing thread and details are important.
Ron