> The K3's sensitivity specification corresponds to a noise figure > of about 13dB. My K3 meets its sensitivity spec almost exactly,
That's the point. The K3 meets its specifications. > The K3 with a preamp is probably the best 6m receiver available; > but this high-end rig should have included a competent 6m preamp > and bypass relays on the original KVXV3 board, and not as a clumsy > afterthought. You will never get agreement as to what should be included in the KXV3 (transverter board) or the overall "package." Low band fans will tell you the transceiver should include full receive antenna switching (e.g., relays to allow the KRX3 to use the transmit antenna while the main receiver uses the RX antenna and/or allow each receiver to use a different low noise receive antenna. There is simply is no room for the "other" functions on the KXV3 and no justification for adding the extra cost (and operational complexity) for features that will only be used by a small fraction of users. Elecraft have struck an excellent balance - designing a rig with an equal level of performance across the operating range and providing an interface (KXV3) that allows those who want additional performance or features (better rx antenna switching, higher sensitivity on 50 MHz, UHF/VHF transverters, KRX3, etc.) to add them as needed and at reasonable cost. > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Ian > White GM3SEK > Sent: Thursday, October 23, 2008 6:23 PM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] 6M Preamp > > > gd0tep wrote: > >As some one who bought the K3 purely for it's RX performance > on 6m, can > >some one tell me once and for all if it is as good as, or > better/worse > >than, other radios like the Icom 756 pro etc... It was my > understanding > >from information provided that it was, is this not the case?? > > The K3's sensitivity specification corresponds to a noise figure of > about 13dB. My K3 meets its sensitivity spec almost exactly, > but at this > site it can barely hear antenna noise on 6m. > > By contrast, the old IC-746 hears 6m antenna noise easily > because it has > a VHF-optimized preamp built in. Even that ageing mid-range rig has a > choice of two different preamps (and a third dedicated to 2m). > > Of course it's still possible to work lots of weak DX on 6m using the > standard K3 receiver; but in the limit, some QSOs will be lost that > could have been completed with a more sensitive receiver. > > The K3 with a preamp is probably the best 6m receiver available; but > this high-end rig should have included a competent 6m preamp > and bypass > relays on the original KVXV3 board, and not as a clumsy afterthought. > > > > -- > > 73 from Ian GM3SEK _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
