Isn't this basically what the Roofing Filter option in the KX3 does. Waiting on mine to arrive this Thursday...Rick
On Sun, Feb 10, 2013 at 6:08 PM, Eric Swartz WA6HHQ - Elecraft < e...@elecraft.com> wrote: > Hi Gary, > > This is normal as the KPA500 is designed to attenuate signals the further > you go below the 160M band in order to protect the T/R switching diodes > from BC band overload. > > 73, > > Eric WA6HHQ > elecraft.com > _..._ > > > On Feb 10, 2013, at 5:28 PM, AG0N-3055 <mcduf...@ag0n.net> wrote: > > > > > The spectrum below 160 meters is much more drastic. Broadcast signals > > suffer lots of signal loss, air-nav signals disappear except for locals, > > and 60KHz WWVB is totally missing, along with all noise of any kind from > > the antenna. Switching the antenna in and out, had no effect on noise, > > not even a pop is heard in the speaker when switching antennas or > > disconnecting connectors when the amp is in OPER position. In STBY, all > > sounds normal. > > > > Generally speaking, the broadcast band could be summed up by saying, the > > lower in frequency you go, the more loss you are going to see when > > switching the amp in and out. It varies from an S-unit or two, to > > several S-units at the bottom of the band. Below that, it gets much > > worse. Only the strongest signals get through in the 250-350KHz range, > > and just about nothing makes it below that. > > > > These results are also being sent to support. I don't know if there is > > a pin-diode problem on mine, or if this is to be expected. I don't like > > it, but can obviously live with it if there's nothing to be fixed. > > > > Gary > > -- > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
