"Ron Hardin" wrote in message
...
Frank Dresser wrote:

"Ron Hardin" wrote in message
..

[snip]


It seems to be a very good AM tuner though. It would need more
knobs to be what you would really want, but it's pretty selective
and sensitive, for instance, at least with the external antenna ;
and it doesn't overload.

I'm curious about your radio's AM selectivity. Is it always IBOC wide
or
does it receive normal AM stations with a normal narrower selectivity?

Frank Dresser

Audiowise, it's very selective as to hearing adjacent channel stations.
You don't
hear splatter at all.

How do you think they're handling the differences in IF bandwidth? I
suppose your radio might have seperate IF strips for the IBOC channel and
the AM channel.


The AGC takes hits from the adjacent station audio, however. Which is why
you'd want a knob for AGC fast/slow, for instance.



I've been wondering if these insensitive IBOC radios are inherently
insensitive or if they're getting desensed by AGC action caused by strong
nearby signals in a wide IBOC IF strip. These strong signals wouldn't get
through a normal AM filter and would be unheard by the listener.

Of course, this is all speculation on my part.

Frank Dresser