SPCM/PCM

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  • Corsair 167
    Hobby Squawk (EXPERIENCED PILOT)

    • Feb 2018
    • 35
    • Fort Mill, SC previously IN
    • Send PM

    #1

    SPCM/PCM

    What is the difference? The receivers are JR 10 channel SPCM and have Ch 57 on them. So it must be FM? The Transmitter is a JR 9303 with a regular antenna and is PCM/ SPCM, mode selectable
    Last edited by Corsair 167; Apr 24, 2018, 07:58 AM. Reason: add information
  • OV10
    >>>Twins are 2X the Fun<<< (Squawk Moderator)

    • Sep 2014
    • 4264
    • Owego, NY
    • Send PM

    #2
    Your assumption that it is an FM frequency based operation is correct.
    PCM (Pulse Code Modulation) is the method used to encode the transmitted stick position values to your RX.
    SPCM is a newer PCM encoding scheme, and uses 1024 steps of resolution.
    You would select the SPCM on the Tx to match the Rx
    Warbird Charlie
    HSD Skyraider FlightLine OV-10 FMS 1400: P-40B, P-51, F4U, F6F, T-28, P-40E, Pitts, 1700 F4U & F7F, FOX glider Freewing A-6, T-33, P-51 Dynam ME-262, Waco TF Giant P-47; ESM F7F-3 LX PBJ-1 EFL CZ T-28, C-150, 1500 P-51 & FW-190

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