Ron Rosenfeld wrote:

The reason: My local airport's altimeter setting can ONLY be received on
the ADF. Without being able to receive that frequency, I have to use a
remote altimeter setting, and the MDA is increased by 160'

What approach is that? Does the plate say "ADF Required"? If not, I
wonder if it would be legal to get the altimeter with a garden-variety
AM radio.

Tim