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World of Ham Radio 1997
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1997-02-01
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>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)