Don, I usually leave the preamp on and not really needed as you said. I will try backing down the RF gain a tad also. Thanks for the info. I found too, unless I have other noise issues to deal with, setting the NR at F1-1 reduces the hiss quite a bit, and no impact at all on the sig. Just seems to give a quieter background, very nice.
Bob K6UJ On Apr 28, 2012, at 4:01 PM, Don Wilhelm wrote: > Bob, > > The K3 has more reserve gain than most other receivers, and the lack of > signals cause the AGC to set the receiver top full gain. > > With other receivers, I usually can run the preamp to advantage, but with my > K3 it is fine without the preamp on. > > Do you have the preamp on? If not, perhaps you want to turn on the > attenuator. To tell if you have enough gain, disconnect the antenna and then > reconnect it. If the receiver can hear the "antenna noise" you can reduce > the gain even further - perhaps by reducing the RF Gain. > > 73, > Don W3FPR > > On 4/28/2012 6:42 PM, Bob K6UJ 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
