How to convert to European FM frequencies?

Discussion in 'General Motoring' started by Peter, Apr 6, 2005.

  1. Peter

    Peter Guest

    Dodge Durango 99, with stock Chrysler radio. Is it possible to convert this
    one to European FM tuning? Methinks it's made by Infinity, at least the
    amplifier is.

    Alternatively, is there din-and-a-half aftermarket unit with MP3 playback,
    not expensive, and able to make use of radio control buttons on steering

    Peter, Apr 6, 2005
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  2. I've taken a portable FM radio from USA to UK and used it with no
    problems; both use the 88-108MHz band. Is the rest of Europe different?

    It's the AM reception that could be a problem: UK (and perhaps the whole
    of Europe) allocates frequencies 9KHz apart, whereas USA uses 10KHz spacing.

    Percival P. Cassidy, Apr 6, 2005
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  3. I did not know there were several flavours of FM frequency... :)

    The public radio band is approx 88 - 108 MHz.

    Dori A Schmetterling, Apr 6, 2005
  4. Peter

    Richard Guest

    Wrong actually. Although the band is the same the frequency assignments are
    different. If you radio does not have an internal switch to let it's fixed
    frequency tuner switch over to the alternative frequency assignments you are
    out of luck. Many radio have such a switch.

    Richard, Apr 7, 2005
  5. Peter

    Bill 2 Guest

    In North America FM is tuned to odd decimals, 96.5, 102.3, etc. While Europe
    is 96.6, 102.2, etc.

    You may be able to "tune" to a station, but it won't be 100%. If you are
    using an analogue tuner, typical of portable radios, you wouldn't notice.
    Bill 2, Apr 7, 2005
  6. I wonder on what basis you make this assertion. For example, my favourite
    UK radio station broadcasts on 93.5 MHz in the London area. This varies
    across the country (it is a national station).

    Plus, on radios one can step through the frequencies in very small steps, if
    one has a button and digital display (rather than a dial and analogue


    For direct contact replace nospam with schmetterling
    Dori A Schmetterling, Apr 7, 2005
  7. Peter

    Peter Guest

    I wonder on what basis you make this assertion. For example, my
    Actually Europe uses 0.1Mhz stepping, and radio stations can be on any
    Generally this is true, but not for Chrysler ones.

    Peter, Apr 7, 2005
  8. Peter

    Dan Guest

    Most of the Chrysler radios I've seen have a way to convert them to
    tune in the European increments on FM. It's done in software. There
    is a combination of buttons to push, and the tuner will switch over to
    0.1 increments from 0.2. But I don't know the exact method for your
    radio. There were several "stock" radios available for your truck,
    all a little different combination of AM/FM/CD/CD
    changer/Cassette/external amp. If you have the owner's manual, it
    might be in there.

    Or you might re-post with a more detailed description of your radio.
    Someone in this group probably knows your answer.

    Dan, Apr 7, 2005
  9. Peter

    Richard Guest

    Another difference is frequency response pre-emphasis. In North America the
    higher audio frequencies are boosted with a 75degree pre-emphasis and in
    Europe a smaller 50 degree curve is used.

    Richard, Apr 8, 2005
  10. Peter

    MoPar Man Guest

    An Akai digital receiver I own (circa 1986) had pc-board jumpers that
    I enabled to allow FM tuning in 50 khz increments. Also enabled LW
    band reception (which is, if I remember correctly, a band that is
    present on European car radios that we don't have in north america).
    AM band is called MW (medium wave?) in Europe if I recall correctly.

    Isin't AM radio tuned in 9 khz steps in Europe (as opposed to 10 khz
    in NA) ?

    (was in Germany for a week a couple of months ago, and heard Rush
    Limbaugh polluting the airwaves with the help of AFN. There aught to
    be a law against that ...)
    MoPar Man, Apr 8, 2005
  11. And what is the effect of this difference, in real-world terms?
    Daniel J. Stern, Apr 8, 2005
  12. Peter

    Peter Guest

    Dodge Durango 99, with stock Chrysler radio. Is it possible to
    Unfortunately I don't have owner's manual... ordered one but apparently it's
    out of stock.
    I believe it's Infinity, at least the amplifier is. It's radio/CD/cassette
    combo with 3-way analogue equalizer, no other distinguishing marks.
    Searching this NG I found a procedure how to re-tune older Chrysler radios
    (Set-Sel-station 1 button routine), but it's not applicable to my unit as it
    does not have Sel button at all. I'm lost... ;(

    Peter, Apr 8, 2005
  13. AM = amplitude modulation, as opposed to frequency modulation (FM).

    FM = in the VHF (very high frequency band) and the rest, i.e. MW, LW and SW
    are AM.

    Yes, LW is a band widely used in Europe. It is particularly well-suited to
    moving and travelling radios (i.e. car radios). However, with modern
    technology radios with FM/VHF can lock onto a station and change frequency
    automatically as the radio moves along. Thus we can hear the much better
    quality of FM without having to retune manually while driving.


    For direct contact replace nospam with schmetterling

    Dori A Schmetterling, Apr 8, 2005
  14. Peter

    Richard Guest

    Good question. If you listen to a European FM station on a North American
    radio without the eq switch the higher end of the audio frequency band of
    each station will be reduced about 5dB at 15,000 cps.

    Richard, Apr 8, 2005
  15. Interesting. So it's just a different EQ curve in the broadcast signal, it
    sounds like.
    Daniel J. Stern, Apr 8, 2005
  16. Peter

    Bill Putney Guest

    Was that play on words intentional or a happy accident?

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    adddress with the letter 'x')
    Bill Putney, Apr 9, 2005
  17. Peter

    Dr Pepper Guest

    Also, it is Wide band, vs Narrow band.
    Most utility radio frequencies are NB (Police, Fire, etc)
    While FM entertainment frequencies are Wide Band.

    Dr Pepper, May 2, 2005
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