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Beomaster 3000 FM Frequency Range?

Discussion in 'Electronic Repair' started by DC, Nov 29, 2004.

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  1. DC

    DC Guest

    Hi,

    I bought a vintage (about 1974) B&O receiver and like it very much,
    only problem is: although the frequency specs I found on the web show
    87.5 - 108 MHz, the dials on the receiver only go up to 104 MHz (and
    one can go beyond that to about 105 MHz). I want to receive two
    channels at about 106 - 107 MHz.

    Question: can somebody confirm that this unit only receives to a range
    of about 105 MHz?

    If yes: is it possible to "shift" the frequency range to 2 MHz upwards
    somehow?

    Thanks for any info on this! Sorry if this is the wrong NG, maybe
    someone does have a hint for me where I should ask this?

    Best regards
    Tim van der Horst
     
  2. Stephen Sank

    Stephen Sank Guest

    The BM3000 uses simple voltage controlled varactor tuning, so the range can be adjusted using a
    pair of trimmer potentiometers on the tuning board, one which controls the low end, and the
    other the top end. The unit should be able to go to 108mHz, so your unit is currently
    misadjusted.

    --
    Stephen Sank, Owner & Ribbon Mic Restorer
    Talking Dog Transducer Company
    http://stephensank.com
    5517 Carmelita Drive N.E.
    Albuquerque, New Mexico [87111]
    505-332-0336
    Auth. Nakamichi & McIntosh servicer
    Payments preferred through Paypal.com
     
  3. N Cook

    N Cook Guest

    87.5 to 104 MHz from service manual , circuit description

    electronic hints and repair briefs , schematics/manuals list on
    http://homepages.tcp.co.uk/~diverse
     
  4. remember that here in europa we didn´t use the "high end" until some
    1970. did not remember exact year, but i have radios that go to 100mhz
    and other that goes to 104mhz...

    /nisse
     
  5. Guest

    Thanks for the expert advice!

    I guess - since this very likely is the European version - there is (at
    least no easy) way to shift the reception range to let's say 90.5 -
    106.5 MHz?
     
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