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crap radio

Discussion in 'Electronic Design' started by RichD, May 5, 2009.

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  1. RichD

    RichD Guest

    I bought an armband radio last week, for
    wear when jogging. It's a digital scanning
    model; you cannot select a particular station,
    it just scans until it finds a signal strong
    enough to lock.

    It operates via a squelch. ok, I can live with
    that. The problem is, when the signal drops,
    it doesn't merely shut off, it starts scanning
    again! Like "I'm so smart and helpful, we lost
    this station, let's find another another one".
    No, stupid box, STICK with this carrier until
    the signal returns! If I want another station,
    I'll press the scan button!

    So then I have to reset, and re-start the scan
    sequence from the lowest frequency. This
    happens every 2 minutes, it's annoying as hell.

    Anyway, I just feel like ranting. I trust no one
    in this group would ever design anything so asshole.
     
  2. Guest

    Hopefully not the guys here but it _is_ annoying that it is designed
    so poorly at all. I have lists of stupid designs from many
    manufacturers including Sony, Toyota, Magnavox, Samsung, Panasonic, VW
    and numerous others. Oh well.

     
  3. TheM

    TheM Guest

    Its a free-running VCO with AFC and simple ramp for station search.

    I doubt it can hold a station for long or re-lock with AFC, if the signal drops out.
    Maybe that is why it looks for the next station.

    In every case you get what you pay for.

    M
     
  4. Consider carrying a small oscillator with you, set
    it to the wanted station's frequency, but a bit weaker in
    strength.
    Then when the watch loses the station, it should still lock on your oscillator.
    Not simple, but it could work.
    Alas for all that design you could buy a real radio.
     
  5. Rich Grise

    Rich Grise Guest

    Why didn't you return it to the store as soon as you discovered
    that it's crap?

    Thanks,
    Rich
     
  6. Rich Grise

    Rich Grise Guest

    I got one about the size and shape of an ear, for about three bucks,
    BATTERIES INCLUDED! I.e., the radio with batteries was cheaper than the
    batteries themselves! Ironically, it's got an edgwise pot with a switch
    for volume a la 1960's transistor radios, but only one button for tuning;
    fortunately, it stays in one place so stays locked onto whatever station
    it stops on. But I really don't like having to scan through two dozen crap
    stations before I find somehthing I like.

    But, mainly, it's for when The Big One hits.

    Cheers!
    Rich
     
  7. Rich Grise

    Rich Grise Guest

    These are button cells, about 3X as thick as an actual button.

    And I could have been using hyperbole - I'd have to check. ;-)

    Cheers!
    Rich
     
  8. RichD

    RichD Guest

    I have seen this several times - purcahase a
    product which is unusable, and clearly no one
    at the manufacturer has ever tried. They build
    and peddle it, but don't use it.
    VW?
     
  9. RichD

    RichD Guest

    $12
     
  10. RichD

    RichD Guest

    I did.

    Then what? The retailer will notify the supplier,
    or return it, but they might think it's a defective
    unit, rather than recognize it's hopeless junk.

    What should happen, the retailer should drop
    it entirely. I guess they need a lot returns, or
    zero sales, before that...
     
  11. RichD

    RichD Guest

    I don't think so.

    It has a digital readout of the station (I use
    FM band only), which means a PLL and
    frequency generator. So it has logic and
    memory. It should be trivial to fix the register
    of the freq. generator, whenever it locks. But
    instead, it does that assole scan...

    Otherwise, it's a nice packahge. It's a cylinder,
    the size of a large cigar, with 2 buttons:
    Reset, and Scan; and digital display.
    It's worth less than what I paid.
     
  12. James Arthur

    James Arthur Guest

    Or more plainly, worthless.

    (I bought several at the dollar store...I use
    them for project cases with built-in switch &
    potentiometer!)

    Cheers,
    James Arthur
     
  13. Then you also have to add or subtract the IF frequency...
    More logic needed, may as well do the PLL thing.
     
  14. Back in the seventies I did that by preloading the counter with the IF
    frequency. Very simple.
     
  15. Jim Thompson

    Jim Thompson Guest

    Which reminds me... I still haven't found an optimal web/Internet
    radio _tuner_. Is there anything out there.
    A number of Phoenix AM stations tout "HD radio", but I've never seen
    such a receiver.
    I was told, many years ago, at Radio Shack, that you had to have a
    special antenna to receive color signals ;-)
    There are leftist weenies up in your remoteness ?:)

    ...Jim Thompson
    --
    | James E.Thompson, P.E. | mens |
    | Analog Innovations, Inc. | et |
    | Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
    | Phoenix, Arizona 85048 Skype: Contacts Only | |
    | Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
    | E-mail Icon at http://www.analog-innovations.com | 1962 |

    "The way I see it, anyone thinking our prospects are better
    because of Obama has the body part farthest from the ground lodged
    in the bodily orifice closest to the ground... The tide is begin-
    ning to turn. The Marxist Messiah may crash to earth in 2012, the
    Bolshevik donkeys perhaps as early as 2010." - Chuck Rogér
     

  16. Ask them if they did see it on analog TV.
    If so, explain that analog is not very precise, and the info
    on digital will be much more accurate ;-)
     
  17. Baron

    Baron Guest

    Join the club... Just seen a flight of pigs go by !
     
  18. Jim Thompson

    Jim Thompson Guest

    I was going to, but couldn't find one in stock. I see they're
    available again
    I'll check that out, Thanks!
    ...Jim Thompson
    --
    | James E.Thompson, P.E. | mens |
    | Analog Innovations, Inc. | et |
    | Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
    | Phoenix, Arizona 85048 Skype: Contacts Only | |
    | Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
    | E-mail Icon at http://www.analog-innovations.com | 1962 |

    Stormy on the East Coast today... due to Bush's failed policies.
     
  19. Jim Thompson

    Jim Thompson Guest

    Anyone know anything about the Logitech Squeezeboxâ„¢ Receiver?

    Also: Though not a fan of wireless networks, I need to go wireless to
    an Internet radio, to avoid pulling more CAT-5 thru the attic :-(

    What do you lurkers recommend for wireless networking? I already have
    a LinkSys 8-port router in use, with 3 spare ports available)

    ...Jim Thompson
    --
    | James E.Thompson, P.E. | mens |
    | Analog Innovations, Inc. | et |
    | Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
    | Phoenix, Arizona 85048 Skype: Contacts Only | |
    | Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
    | E-mail Icon at http://www.analog-innovations.com | 1962 |

    Stormy on the East Coast today... due to Bush's failed policies.
     
  20. Greegor

    Greegor Guest

    Millions of those sold at Wal Mart in various case designs.
    I even got a few at .25c each closeout, with batteries.
    Use hearing aid style pill sized coin batteries.

    Do you keep it in a safe with three inch solid iron walls?

    EM Pulse would end it otherwise, like most other electronics.

    But when The Big One hits, the annoyance of
    scanning through so many stations would
    no longer be an issue.

    The cheapies with the scan button only do FM.
     
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