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Odd-ball Connector

Discussion in 'Electronic Design' started by Jim Thompson, May 21, 2009.

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  1. Jim Thompson

    Jim Thompson Guest

    FM Input to a receiver BUT...

    At first glance, looks like RCA jack, except...

    Bigger diameter, and has a male pin in the middle.

    Any ideas for a mating connector, to connect to RG-6?

    ...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 |

    I love to cook with wine Sometimes I even put it in the food
     
  2. Jim Thompson

    Jim Thompson Guest

    Helps to surf the web and find the manual... it's a screwy
    friction-fit type-F :-(

    ...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.
     
  3. John G.

    John G. Guest

    Without the benefit of a picture I would guess it could be a Belling & Lee
    coax connector, almost universally used for TV antennas etc in AUS. till we
    were invaded by F** connectors with the advent of cable TV.
     
  4. John

    John Guest

    "John G." <wrote
    and in EU and a number of other countries

    http://en.wikipedia.org/wiki/TV_Aerial_Plug
     
  5. Ian Jackson

    Ian Jackson Guest

    It's interesting that Wikipedia says "It was originally only intended
    for medium frequency broadcasts, where accurate impedance matching of an
    antenna connector is not a concern."

    It goes on, "Unlike the coaxial F connector used today for the same
    purpose in North America, the IEC 169-2 connector is not matched to the
    75-ohm characteristic impedance of the antenna cable used. The lack of
    impedance matching causes signal reflections in the cable, leading to
    noticeable signal distortion on VHF and UHF frequencies (but not MW or
    Shortwave)."

    I've always thought (and in my experience) that 'Belling Lee' / IEC
    169-2 connectors are a pretty good match up to UHF. I feel that they
    might be mixing things up with the PL259/SO239 combination.

    Anyway.....
    In the UK and Europe, many of the TV/FM (usually diplexed) wall outlet
    plates have/had 'sexed' connectors. The male was the TV, and the female
    the FM. The idea was that, using a coax jumper with opposite sex
    connectors on each end, you would plug the male end into the TV set
    female socket, and the female end into the wall-plate male. It was vice
    versa for the FM, where the radio was supposed to have a male input
    connector. [In my opinion, a right pain in the backside!] Maybe this is
    what the OP has?
     
  6. Jasen Betts

    Jasen Betts Guest

    Yeah, I've meaured less insertion loss (by about 0.5dB) with a mating pair
    of the (nickel?) plated brass Belling-Lee antenna connectors than I'd get
    with a pair of F connectors and a joiner. The plastic Belling-Lee
    connectors are worse, and the aluminium ones tend to become encrusted.
    At the time I was mainly interested in stations broadcasting at around
    450Mhz
     
  7. Jim Thompson

    Jim Thompson Guest

    Mine's a little different, but that's basically the jack I have. I
    found an old friction-fit cable in my junk box and added a type-F
    (threaded) to the other end, to connect to the wall jack. Makes the
    wife happy, FM antenna now in attic rather than pinned to the wall ;-)

    ...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.
     
  8. Jasen Betts

    Jasen Betts Guest

    they are available in crimp fitting variants and also screw
    termination.

    the screw ones work better, but the crimp ones are faster.
    Faced with an urge to avoid hassle, I'd pick the crimp option.

    Bye,
     
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