"Jeff Liebermann Radio Ham, But Case & LIAR "

" Phil Allison "

The FM tuner might have an AGC section. This is required for direct
digital receivers that have an A/D converter in the front end of at
the IF frequency. The AGC is necessary to use the entire range of the
A/D. These usually have a limited dynamic (amplitude) range and are
easily overloaded. When amplified, this would cause a strong signal
to disappear as it runs out of head room.

** Massive pile of ******** !!!

FM signals are not affected by amplitude limiting - cos limiting is
just
what the IF stage is designed to do.


I hate to bring you kicking and screaming into the 21st century, but
many of todays FM broadcast systems are not pure FM modulation.

** Totally irrelevant to the material posted above.

You are ONE desperate ****ing LIAR !!


However, there are problems even with traditional pure FM systems. The
all digital DSP FM tuner chips require an AGC to maximize the dynamic
range of the A/D converter driving the DSP. I posted this, with
examples, in a previous message.

** More ********.

All you ever posted was you own WRONG opinion.

The AGC makes AM reception possible while using an 10.7 MHz FM IF strip



...... Phil