On Sun, 31 Jan 2010 14:23:33 -0500, Brian Machesney wrote: >For the first time, I turned on the K3's ATT and found that I was even >better able to separate callers, particularly when trying to pick out >relatively weaker EU signals from stronger NA signals responding to my CQ.
Those of us with lots of grey hair learned 50 years ago that the most important control on our receiver was the RF Gain. They didn't come with attenuators or preamps in those days, but we also learned to switch them to a shorter antenna when they got overloaded. With a modern radio, on bands below 20M, the ATTenuator should almost always be ON and the PREamp should almost always be OFF for the greatest ability to separate weak signals from strong ones. On 20M you can usually turn off the ATTenuator, but you may not need the preamp until you go to higher bands. Another hint -- to pull really weak ones out from between strong signals, turn down the RF gain to the point where you are just hearing the weak one. During the 160M contest this weekend, preamp was off, ATT was on, and my RF gains were at about 2'o'clock. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
