Hello Klaus, I wonder if it's possible that some of the foreign stations you reported hearing are being relayed by a European broadcast station much closer to you, and that's why they are strong enough to contribute to your break through problems. Just a thought.
73, Ken Alexander VE3HLS ________________________________ From: Klaus Dittrich <kla...@arcor.de> To: elecraft@mailman.qth.net Sent: Monday, July 29, 2013 4:01:22 PM Subject: Re: [Elecraft] KX3 AM-breakthrough Thank you all for taking the time to answer to this issue. I will respond to some of the arguments and tips .. Klaus, I already have current baluns at both ends of the coax cable. The KX3 is driven by an analog old PS30 power supply, not a switching power supply. I already mentioned the AM stations are far ones. The last "Ortssender" around, Stuttgart Mühlacker, has been put out of service. Emory, same here, only when the broadcast bands open, good conditions, the effect takes place. Your double size G5RV delivers similar strong rf-levels as my antenna then. It is not one AM-station, depending on ionospheric conditions it may be and often is every time another one. Uwe, "very annoying", that's the point. Ralf, I think, because the AM-breakthrough signals are hearable at every frequency they are not mixing products from a nearby electronic device or a diode build by corrosion. This would cause a lot of but discrete signals. Matt and Don, if this is a problem with _any_ zero frequency IF (direct conversion) receiver then the KX3's concept would be a design error. ( I hope it is not.) If I switch to RX SHIFT I will have a receiver with the most advertised KX3 feature, narrow spaced dynamic range, dropping to values of rigs of the last century, like IC-735 or Lowe HF-235 or Drake SW8. (see http://www.sherweng.com/table.html) Additional I would have thrown the money for the roofing filters out of the window, as we say here in Germany. I hope there is a possiblity of rejection by software, but I have no expertise in SDR at all. No one of Elecraft has answered up to now, so I stay curious. -- 73 Klaus DF1TL ______________________________________________________________ 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
