Why do you think you gain in MDS (presumably you mean a *lower* MDS) by bypassing the ATU? If the ATU is needed for transmit, it will also be benficial in receive. I don't have the K3 ATU, but both manual and automatic tuners in my antenna system and can certainly certify that when switching in the tuner when needed, the receive signal goes up (mismatch loses receive signal too).
AB2TC - Knut drewko wrote: > > Actually, you will probably LOSE a couple of db by switching on both > preamp and attenuator compared to having both switched off. (Measure > your MDS and compare results if you don't believe...) > > Regarding weak signals, one factor that is overlooked is the ATU. By > switching it to bypass you can gain 5 or 6 db in MDS. Of course, you > would want to switch it back on when you transmit. > > I wonder if the ATU could be programmed to automatically be bypassed > on receive? You would perhaps not want the ATU to be switched in and > out at break-in speeds, but after a suitable semi-breakin delay. I > think that would be a handy option for weak signal work for those of > us who must use the ATU. > > 73, > Drew > AF2Z > > > <snip > -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-PRE-ATT-Bug-or-feature-tp5392799p5412211.html Sent from the [K3] mailing list archive at Nabble.com. ______________________________________________________________ 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
