Note on diversity reception.Way back in early 70ies while using two Drake R4C receivers for contesting, I discovered interesting effect. When using two receivers, L & R, going to two ears L & R, using different antennas - Beverages and Inv Vee, I would come across situations when I can hear weak station using both ears/RXs, but when switching to individual one, signal would not be there. It looked to me like some kind of noise canceling, perhaps in combination with brain processing.Diversity can be with polarization, angles, directions. Having tracking receivers makes it sooo cool.Recently while operating as TF4X in CQ 160 CW while using K3 and array of Beverages, Rhombics and Arctic King (TF4M.com) this again came very handy in digging out the weak ones. Noise floor there was just at about 0 and it was some experience to hear the world, being on the top of the world.K3 is unique in using two RX diversity reception, especially for serious contesting, and when limited with 13 lbs weight limit in carry on luggage - jus' one honey of the radio.Packaging, modularity, circuit design and performance is leaving just about all of my "big boxes" in the dust. Congrats and thanks Elecraft!Yuri, K3BU.us----- Original Message -----From: Monty Shultes Date: Friday, February 19, 2010 11:25 amSubject: Re: [Elecraft] K3 and the subreceiverTo: K4DSW , "elecraft@mailman.qth.net" > Depends on what kind of operating you do. For some things a > second receiver > is highly useful, for others, not at all useful.> > To get the maximum benefit you need a second antenna for each > band. Then > diversity reception is possible, mitigating QSB and enhancing > weak signals.> > If you like to monitor frequencies you are not transmitting on, > especially > on another band, the second receiver is excellent. You can do > some of this > with VFO B, but is limited - see the manual.> > I have the second receiver but do not use it often. I'm > pursuing digital > modes right now, not rare DX or weak signals.> > You can always add the second receiver later.> > Monty K2DLJ> > > Hello all, I'm considering a K3 and I'm wondering what the > benefit of > > paying> > the extra money for the subreceiver is. Can any of you elmers > enlighten > > me> > on why one should put down the extra cash?> > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net
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