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Hi all, I have a cheapo PLJ-8LEDfrequency counter modual,it works ok but for anything above hf needs a lot more drive,can anyone recomend or link to a schematic for a wideband buffer and amplifier to make this work upto uhf?,thanks in advance,i have added the manual and schematic to the files section.

is there any way just a small wideband preamp on its rf input would fix it,i have 2 or 3 sga3486 amp chips i could use,would that work?