My dummy load uses 4 x 51R 2W SMD resistors connected in series parallel, then 2k5 to 2 x 100R to give a dummy load come 40dB attenuator.? It also has a BAT41 Schottky diode and 0.1 uF capacitor to give the peak reading.? AIUI SMD resistors tend to be lower inductance than through hole ones.
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A dummy load is about third on my list of essential test gear, first is a multimeter, then a controllable voltage and current power supply with voltage and current display, then the dummy load.
