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Thread: Santec ST-142 Battery Connections

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  1. #1

    Default Santec ST-142 Battery Connections

    I wonder if anyone might have some info on the battery connections for the old Santec ST-142 2 meter handheld? I have an old unit without the battery, but WITH the plug and 3-wire leads (2 red, 1 black) that were at one time attached to a battery.

    I have purchased a replacement battery but it just comes with one red and one black lead.

    My question is, do you happen to know how those 3 wires get connected to the 2 on the battery...is it the 2 reds from the plug go to the 1 red on the battery, then black to black...or some other combination? I'd prefer to know for sure before I do it wrong and fry something!

    Thanks for any help you can give me!

    73, N6ECI / Mike

  2. #2

    Default

    The information off the internet is sparse and if you want to really know for sure then you would need to plop down the funds to buy either the manual or the service pack.
    One thought about the two red wires is perhaps one is going to a rechargeable battery circuit in the HT and the other is the operating voltage. This is just a thought and can be really wrong.
    Hope you find an answer.
    73
    Gary

  3. #3

    Default st-142 power plug

    hi
    this is my first attempt here to reply to a question...hope it works.
    the wiring on the plug has three wires red on each side and black in middle.
    the two red wires are tied together and goes to the battery positive and the black
    to the battery negative.
    one of the red wires is fused inside the radio for use with the wall charger, fused at
    2 amps with a littlefuse. all connections are necessary for the unit to work.
    do not install the battery with the unit on, a danger of blowing this fuse and unit
    will not work until replaced. I think this fuses the fast charge with the wall charger.
    if you find a source of the plugs I would appreciate the info.
    hope this helps.
    so just wire both red to battery positive and black to negative and you will be set,
    remember to power off before pluging in battery, don't know why this happens but it
    does.

    thank and 73's
    n4je

    Quote Originally Posted by N6ECI View Post
    I wonder if anyone might have some info on the battery connections for the old Santec ST-142 2 meter handheld? I have an old unit without the battery, but WITH the plug and 3-wire leads (2 red, 1 black) that were at one time attached to a battery.

    I have purchased a replacement battery but it just comes with one red and one black lead.

    My question is, do you happen to know how those 3 wires get connected to the 2 on the battery...is it the 2 reds from the plug go to the 1 red on the battery, then black to black...or some other combination? I'd prefer to know for sure before I do it wrong and fry something!

    Thanks for any help you can give me!

    73, N6ECI / Mike

  4. #4

    Default

    mike
    did you get and understand my message on the battery wiring?
    I have a santec st-142 and have blow that littlefuse several times. it is inside the radio and to
    get to it you have to pull the radio apart and laying on its face it is in the lower left corner of
    that part of the radio, it is green. I have since replaced this with a wire bridge instead of the
    fuse and so far no problem.
    enterstate battery outlet built a battery pack for me nimh 1800ma for $21.00. only problem is
    you have to have a battery plug for the unit.
    all wires must be connected and this fuse must be good for the unit to operate.

    best of luck and 73's
    n4je joe j.evans.1640@cox.net having a problem with juno, cannot log on

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