I tried the 7600 and was very disappointed in the sync function. It made
no discernible difference in reception. This may have been an isolated
situation, but I remember others complaining about the same thing.


A sync detector will make no difference when listening to a local
flame-thrower because it is not needed in that situation.

Try to listen to a barely perceptible flea power station and then turn on
the sync detector. That's what its for!
It is for DXing not flame-thrower program listening! Don't confuse the two.