Bob, Guy is giving you a lot of good advice, and he has some serious operating skills behind him, so he knows what he is saying.
Maybe you can think of it this way -- "You can't copy (with your ears) signals that are buried in the atmospheric noise, so why make that noise louder". 73, Don W3FPR On 4/28/2012 8:20 PM, Bob K6UJ wrote: > 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 > ______________________________________________________________ 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
