Re: [K3] [Elecraft] BCB sensitivity

2008-07-20 Thread David Cutter
I forced my MFJ analyser to work in the broadcast band by simply adding a silver mica cap in parallel with the tuning cap. David G3UNA Drew, For BCB operation using a 100 ft wire for an antenna (hopefully you also connect to some form of ground screen), I would expect the inductance in

Re: [K3] [Elecraft] BCB sensitivity

2008-07-19 Thread Chuck - AE4CW
Vic and Drew, The ATU in the K3 is a low-pass L design which has a series inductance and *either* an input (Ct) *or* output (Ca) shunting capacitance. There is only one capacitance in this desigh, not two. The single capacitance is switched between the input (Ct side - transceiver) or output

Re: [K3] [Elecraft] BCB sensitivity

2008-07-19 Thread drewko1
Ok, Chuck, thanks alot. That explains all. I was thinking it was a pi with two capacitors. So anyway, for BCB reception, the capacitor doesn't do much and you would pretty much want to have maximum L, right? 73, Drew AF2Z On Sat, 19 Jul 2008 09:03:02 -0700 (PDT), Chuck, AE4CW wrote: Vic and

Re: [K3] [Elecraft] BCB sensitivity

2008-07-19 Thread Don Wilhelm
Drew, For BCB operation using a 100 ft wire for an antenna (hopefully you also connect to some form of ground screen), I would expect the inductance in the KAT3 to be quite low. I would suggest adding a supplemental inductor in series with the antenna wire. I am not going to suggest just