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146MHz Amp Tests



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    146MHz Amp Tests

    After some chat with Charles i've made a plot of power curve of the combined RD06 and RD15 device...

    gnuradio was used to ramp the output amplitude of a cw signal from the DATV Express.
    A coupled output from the RD15 amp stage was fed into an rtlsdr dongle, the amplitude measured and plotted, the result is below.
    The power is swept from very low o/p up to 9Watts.

    Amplifier plot




    In GNUradio right or wrong i've used the function probe to feed back the sawtooth signal from a signal source to a variable which is the value of the multiply const block.

    GNURadio power sweep setup











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