That what I think too, Geoff. I'm driving or was trying to drive the GE BT-20-A. I think I must have VFO problems. I fed it directly into the grid of the buffer and it barely produced enough drive to register. I am in the midst of double checking the buffer stage to be sure I haven't overlooked something.
Thanks, Rick What rig is this in, Rick? MAn, the Viking 122 VFO, at least on the Viking II, has -plenty- of drive! I keep my grid drive control down, on 80m, around 2.5 or 3 on the knob. That gives me around 7.5mA of grid drive for the pair of 6146's (yeah, Ellen - I've been meaning to send you that correction - Johnson says a single 6146 needs no more than 2.5mA of grid drive, the pair in the Viking II needs 7.5mA of grid drive, and I'm guessing (someone tell me for sure) that the Valiant, with it's (3) 6146's needs around 10mA of grid drive?) and if I crank the knob up to around 5 or 6, then I've in excess of 10mA of grid drive on the pair of 6146's. -- Driving your AM Rig without a scope, is like driving your car at night, without headlights. (K4KYV) -- 73 = Best Regards, -Geoff/W5OMR __ ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
