[Elecraft] NR and Audio increase
The post from BA4RF etc about the NR causing the audio to blast, I mentioned I do not work SSB but tried went to SSB and confirmed the increase in audio, well its on all modes as far as I can tell, to be more truthfull I do not use NR as I find it to non effective to CW work at least the for what I want, If you have a decent signal strength CW signal tuned to the pitch setting and hit NR with a setting of 4 the audio increases dramatically, I tried it also listening to AM broad cast on 40 meters and had the same increase. So unless its my radio only again the NR function is not working on all modes as of the last couple updates. AGC updates effected the NR in some fashion? I did not try changing any of the AGC settings to see if they made any difference. 73 Merv KH7C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] NR and Audio increase
I can almost guarantee this is going to be another one of those, My radio doesn't act like that threads. The reason being, this phenomenon is level sensitive. With a weak signal the noise reduction lowers the signal strength but above a certain level, it increases the signal dramatically. With a -110 dBm signal (1000 Hz beat note) turning on NR (F1-1) reduces the audio signal 6 dB. At -100 dBm input, NR *increases* the signal 11 dB. At -90 dBm it's up 16 dB. Wes N7WS --- On Wed, 4/8/09, Merv Schweigert k...@flex.com wrote: From: Merv Schweigert k...@flex.com The post from BA4RF etc about the NR causing the audio to blast, I mentioned I do not work SSB but tried went to SSB and confirmed the increase in audio, well its on all modes as far as I can tell, to be more truthfull I do not use NR as I find it to non effective to CW work at least the for what I want, If you have a decent signal strength CW signal tuned to the pitch setting and hit NR with a setting of 4 the audio increases dramatically, I tried it also listening to AM broad cast on 40 meters and had the same increase. So unless its my radio only again the NR function is not working on all modes as of the last couple updates. AGC updates effected the NR in some fashion? I did not try changing any of the AGC settings to see if they made any difference. 73 Merv KH7C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] NR and Audio increase
Hi Wes, are you talking about situation when RX EQ is FLAT? Did you tra some EQ settings and what is as result? Thanks, 73! Lexa, OK1DST Wes Stewart napsal(a): I can almost guarantee this is going to be another one of those, My radio doesn't act like that threads. The reason being, this phenomenon is level sensitive. With a weak signal the noise reduction lowers the signal strength but above a certain level, it increases the signal dramatically. With a -110 dBm signal (1000 Hz beat note) turning on NR (F1-1) reduces the audio signal 6 dB. At -100 dBm input, NR *increases* the signal 11 dB. At -90 dBm it's up 16 dB. Wes N7WS --- On Wed, 4/8/09, Merv Schweigert k...@flex.com wrote: From: Merv Schweigert k...@flex.com The post from BA4RF etc about the NR causing the audio to blast, I mentioned I do not work SSB but tried went to SSB and confirmed the increase in audio, well its on all modes as far as I can tell, to be more truthfull I do not use NR as I find it to non effective to CW work at least the for what I want, If you have a decent signal strength CW signal tuned to the pitch setting and hit NR with a setting of 4 the audio increases dramatically, I tried it also listening to AM broad cast on 40 meters and had the same increase. So unless its my radio only again the NR function is not working on all modes as of the last couple updates. AGC updates effected the NR in some fashion? I did not try changing any of the AGC settings to see if they made any difference. 73 Merv KH7C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net 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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
