My KNB2 noise blanker doesn't appear to work hardly at all. It never has worked well since I built it. I recently downloaded some notes that Gary Surrency sent to K0WA. Gary's comments include the following: "You can check to see if Noise Gate Q5 is blanking by touching a resistor of 1K - 2K to the base of Q5 with the other end connected to +12 volt source. This should turn on Q5 and result in a large loss of signal..." I did this but I only got a slight reduction in signal. Does this indicate that Q5, PN2222A is weak and should be replaced?
Comments anyone ?
Rich W3ACO
K2# 4023
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