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Bedford Ramblings
Steve Mills

OK techies, why does an FM channel move off its' mark without touching the dial?

Posted Wednesday, January 17, 2018, at 9:42 AM
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  • If you played something more palatable to the cats they might stop changing the channel. I don't listen to AM/FM much, but when I do it is usually FM. Tend to get channel drift with both but seems like worse with AM. No idea why.

    -- Posted by fair share on Wed, Jan 17, 2018, at 10:38 AM
  • Channel drift, good yerm to search. Thanks.

    -- Posted by stevemills on Wed, Jan 17, 2018, at 12:15 PM
  • Guessing you're using a radio with an analog tuner.

    If this is the case, the mechanism inside will be affected by changing temperatures which cause expansion/contraction of the associated parts.

    Also changing atmospherics (clouds etc.) will cause shifts as FM is essentially a line of sight transmission.

    -- Posted by quietmike on Wed, Jan 17, 2018, at 1:16 PM
  • Yes analog. sorry, meant to say that but see I didn't. It never seems to come back to “in tune” so I would guess the first of your explanations.

    MANY THANKS!!

    -- Posted by stevemills on Wed, Jan 17, 2018, at 6:45 PM
  • Does a digital continue to “auto-tune” itself?

    -- Posted by stevemills on Wed, Jan 17, 2018, at 6:46 PM
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    If the radio is tuned to 99.7 all day and night, I could see how this might drive your cats a little crazy.

    It could also possibly be considered a form of animal cruelty.

    Try a classic rock station.

    -- Posted by RocketValentine on Wed, Jan 17, 2018, at 7:04 PM
  • Yeah, wouldn't want your cats or the coyotes to get too informed. Might cause trouble for your iron-fisted ruling of the kingdom!

    -- Posted by fair share on Wed, Jan 17, 2018, at 7:10 PM
  • A digital tuner doesn't rely on mechanical moving parts so if you're adjustment is to the tuner and not the antenna, it would solve your problem.

    -- Posted by quietmike on Wed, Jan 17, 2018, at 7:20 PM
  • The antenna is not too hot either. I did not commit a new radio to the endeavor.

    Yes WWTN. Supposedly music eventually stops deterring them but they have learned to avoid humans and different voices makes them think someone is out there.

    NOT THE LAST FEW NIGHTS! I am out and back in as soon as I can.

    -- Posted by stevemills on Wed, Jan 17, 2018, at 8:00 PM
  • Does a digital continue to “auto-tune” itself?

    -- Posted by stevemills on Wed, Jan 17, 2018, at 8:32 PM
  • Yes analog. sorry, meant to say that but see I didn't. It never seems to come back to “in tune” so I would guess the first of your explanations.

    MANY THANKS!!

    -- Posted by stevemills on Wed, Jan 17, 2018, at 8:32 PM
  • Glad to help.

    -- Posted by quietmike on Thu, Jan 18, 2018, at 5:14 AM
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