copied from UUCP:
>From: liud@guille.ECE.ORST.EDU (Don Liu)
Newsgroups: rec.radio.shortwave
Subject: Sangean 803A hints
Summary: Fixable problems

Recently I fixed several minor problems of my new Sangean receiver.
I am posting the following in hope that some of you may use it as
reference.

The problems are:
1) Inaccuracy in the synthesized frequency
3) Crossmodulation (that is, strong local stations interference
   when using a good antenna)

My fixes are:
1) open the back cover and remove the top PC board. Set the bandwidth
switch to "narrow" and tune to a weak yet clear signal. Adjust
the tunable capacitor to center the frequency (very easily done).

3) You may have crossmodulation if you find that a good antenna would
make reception worse. reduce the RF gain will help reduce the cross
modulation, but the reduction is often not enough. There is a 68 ohm
resistor connecting the RF gain potentiometer to ground. Shorting
this resistor will increase the gain control range greatly thus
fixing this problem.

Happy SWLing!
(note: I haven't tried these, proceed at your own risk. WA2ISE)