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Kenwood TS-700A How to connect 120 V to four-pin Jones connector?

Discussion in 'VHF/UHF - 50Mhz and Beyond' started by W9RCK, Jun 5, 2015.

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  1. W9RCK

    W9RCK Ham Member QRZ Page

    Just acquired with no manual and no power cable

    W9RCK
     
  2. W9GB

    W9GB Ham Member QRZ Page

    ---- 120 VAC ????
    MANY Kenwood 4-pin CINCH plugs, in that era (TS-7400A), were only for 13.8 VDC.

    The CINCH Connector is their 300 Series, Catalog here (Page 2-36)
    The 4-pin Square is the "304" model.
    http://www.cinch.com/pdfs/MiscCommercial_Catalog.pdf

    KENWOOD TS-700A OPERATORS MANUAL
    PAGE 6, Figure 1
    This Cinch 4-pin (304) supports BOTH 120 VAC and 13.8 VDC --
    WIRING MISTAKE COSTLY ($$)

    http://www.repeater-builder.com/kenwood/pdfs/ts-700-op-man.pdf

    KENWOOD TS-700 SERVICE MANUAL (from K9ROD)
    PARTS LIST for DC Power Cord on Page 29, DC cable requires 5 Amp fuse.
    http://www.k9rod.net/TS-700-SM.pdf

    USE a VOM/DVM and VISUAL INSPECTION to CONFIRM.
    JAPANESE Clone Connectors of CINCH, sometimes mislabel Pin numbering (Yaesu FT-101 issue).

    From Service Manual, it appears PINS 1 and 2 are for 120 VAC (internal 1 Amp fuse).
    while PIN 3 is for +13.8 VDC and PIN 4 -13.8 VDC (requires external 5 Amp fuse).

    S1 is your power switch, which has TWO isolated segments/wafers (13.8 DC; 120 AC).
     
    Last edited: Jun 5, 2015
  3. KO6WB

    KO6WB Premium Subscriber QRZ Page

    I've got the TS-780 dual band and it has exactly the same connector. It's either 120/240VAC or 13.8VDC.
    Download the manual; http://boxspringsonline.com/kenwood/1869-kenwood-ts-700s-instruction-manual
    And just after page 25 is the diagram of the power connections. It's in the lower left hand corner of the schematic.
    Like I stated, exactly like the TS-780 connection. Never stated it was a good idea to wire it that way, though:rolleyes:. Just use proper care.

    Hope this helps
    73
    Gary
     
  4. W9GB

    W9GB Ham Member QRZ Page

    When this Kenwood VHF All-Mode radio was new -- it was shipped with TWO Power cables.
    One properly wired for 120 VAC, and the other for 13.8 VDC.

    This is the Difference in purchasing Used Radios ---
    Quality User Resellers versus Quick Dollar FLIPPERS.
    --
    A Quality Reseller would DIY Build those missing Power Cables (my approach),
    and they have knowledge, skills, and patience -- to build them as good as factory (or better).
     

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