Hi Chris, Sometimes R6 is needed to lower the threshold at Q2 so it will switch properly. The value is not critical and in some cases a value as low at 12 k is helpful. Try the 22 k and check to see if U2 is clocking properly.
73, Tony KB9YIG. ----- Original Message ----- From: kd4pbj To: [email protected] Sent: Saturday, May 24, 2008 3:18 PM Subject: [softrock40] SR Lite for 455 khz part question Hi Guys, I have built my SR Lite for 455 khz but I have a question regarding R6. Can someone confirm that the correct value is 12.1 K ohms? I see that on the sheet that was included in my kit but I did not get a 12.1 K resistor in my kit, and I had a 22 K resistor that I did not end up using that was included. I just wanted to make sure that an improvement hadn't been made and 22K being the substitute. I can use a 12K 5% unit from my resistor drawer if 12.1 K is indeed correct. Thanks! Chirs KD4PBJ
