[Electronics-Talk] am/fm tuning in an hd market

[Steve Jacobson]

It is possible you are having more problems because of HD signals.  If you
have a radio with digital tuning, you should not experience any difficulties
on FM or AM.  However, if you have an analog  radio that employs some kind
of Automatic Frequency Control sometimes called AFC, it can sometimes lock
on to the HD portion of the FM signal instead of the analog part.  This
won't happen all of the time, because there are some other variables.  While
the HD portion of an AM signal is very apparent when one tunes, I am not
aware of any reason you should have more trouble getting those signals with
careful tuning.  You will hear an obvious sound on either side but the
actual analog signal should be as clear as ever.  This may make a strong AM
signal seem narrower, though, and might cause you to miss a station while
tuning.  However, a strong AM HD signal could interfere with an analog
station right next to it on the dial.  This can be a problem particularly at
night when more frequencies contain receivable stations, but is not usually
an issue during daylight hours.

Best regards,

Steve Jacobson

-----Original Message-----
From: Electronics-Talk <electronics-talk-bounces at nfbnet.org> On Behalf Of
Jude DaShiell via Electronics-Talk
Sent: Wednesday, May 1, 2019 5:38 AM
To: electronics-talk at nfbnet.org
Cc: Jude DaShiell <jdashiel at panix.com>
Subject: [Electronics-Talk] am/fm tuning in an hd market

It seems to be more difficult to tune and lock onto am and fm stations
with standard radios in an hd heavy marketplace.  Is that actually the
case or do I have a defective radio?



--


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