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Thread: NJQRP Sniffer circuit question

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  1. #1

    Default NJQRP Sniffer circuit question

    I have collected parts to build a NJQRP sniffer http://www.njqrp.org/sniffer/index.html

    I only have a 0-100uA meter, not a 0-200uA. Should I be concerned about this meter working with the circuit. Would it be worthwhile to modify R11 to limit current or place a resistor in parallel with the meter.

    Thanks for any input,

    Paul, K4PP

  2. #2
    Join Date
    Apr 2003
    Location
    MI
    Posts
    6,178

    Default

    I don't see one on the schematic and you might not need it, but you can add a 1or 2 K ohm adjustable resistor in series with R11 to adjust instrument sensitivity, or just collapse the whip if the meter pegs out. Check out the instruction manual.

    Cortland
    KA5S

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