In article , m II wrote:

Telamon wrote:

You might have avoided that by using a loop antenna instead of a high
impedance single wire. I keep telling people this but none seem to pay
attention.


I bought a well used Realistic DX 390 a while back. It works fine on FM,
but not on AM. I suspect it has two separate stages in the detection
department.

Do you have any references for the possibly blown FET? Any increases in
sensitivity/durability would be welcome.

I made a search on the web and found:
"find Q1 near the antenna connector which in my radio was a 2SK152"

which is in this informative article by ordie he-
http://dxworld.com/dx390.html

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Telamon
Ventura, California