Guy, Thanks for the info. I think I have "afraid I wont be able to copy weak signal" fobia, hihi. I need to experiment more with the RF gain and PRE and convince myself that that I am not sacrificing weak sig copy. My problem lies in the space between the headphones, hihihihi
Bob K6UJ On Apr 28, 2012, at 4:58 PM, Guy Olinger K2AV wrote: > You only need set PRE/none/ATT and RF gain correctly. Many people seem to > thing that RF gain at max all the time and PRE on all the time, for all bands > all the time, is the normal setting. > > You can make this exact same error on a Ten-Tec Orion. PRE/ATT/RF gain need > to be set for ambient noise with NO signal to be at a very moderate level. > It is not at all uncommon on 160 and 80 for that to be ATT on and RF gain at > two PM. My Yaesu MP dealt with that issue by deliberately making 160/80 > insensitive so they would not receive reports of a noisy receiver. > > On your K3 you have the flexibility to use those on the low bands to supply > preamplier gain for low output directional RX antennas. > > My TX antenna on 160 is ATT on, RF gain at noon, and phased loops-on-ground > to NE on the second RX set to PRE on and RF gain at max. Works balanced and > gang-busters on diversity, because the flexibility in the K3 allows me to > equalize the noise levels in the antennas. There is no roaring noise coming > out of the RX and NR does not really help for really weak CW signals. Narrow > selectivity does better. > > 73, Guy. > > On Sat, Apr 28, 2012 at 6:42 PM, Bob K6UJ <[email protected]> wrote: > I have a Kenwood TS-590S for a back up to my K3 and it has a noticeably > quieter background than the K3. > I believe we should be able to address this with the NR in the K3, I'm still > learning how to adjust the NR. > > > Bob > K6UJ > > > > On Apr 28, 2012, at 12:15 PM, hawley, charles j jr wrote: > > > I remember that my Kenwood 850 was quiet like that compared to my Yeasu > > 990. Possibly how the agc is handled by Kenwood? > > > > Sent from my iPad > > > > On Apr 28, 2012, at 8:07 AM, "Bill" <[email protected]> wrote: > > > >> I have had my K3 for a couple of months - so I am still learning. > >> > >> At this point, my primary concern is the amount of background hiss that > >> I have when no signals are being received. For example: When on 75 this > >> AM I am listening to a local net. When no one is talking the background > >> hiss rises. > >> > >> When I switch to my TS-480, signals are just as strong and everything is > >> the same - EXCEPT there is nearly zero background hiss. I use the ATT on > >> both rigs. I much prefer the near FM silence of the 480. > >> > >> I have already reduced it somewhat by use of the RX Equalizer. However, > >> it needs a lot more reduction to get to what I feel is an acceptable > >> level. Of note: I live in a rural area that has no background noise - > >> daytime level on 75 meters is zero. > >> > >> Suggestions would be most appreciated. > >> > >> Bill W2BLC > >> > >> -- > >> IN GOD I TRUST (but, NOT a single politician) > >> ______________________________________________________________ > >> 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 > > ______________________________________________________________ > > 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 > > ______________________________________________________________ > 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 > ______________________________________________________________ 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
