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 _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
