[Elecraft] k3 NR Audio level increase

[Joe Planisky]

Good catch, Gary. AGC settings are the missing piece and probably why  
some people aren't seeing this.  With an S9 signal, NR=F4-4, BW=2.00,  
I get the following results for different settings of AGC THR and AGC  
SLP when NR is engaged:

THR=2, SLP= 0 +10.0 dB
THR=2, SLP= 5 + 2.7 dB
THR=2, SLP=10 - 6.0 dB
THR=2, SLP=15 -15.5 dB

THR=4, SLP= 0 +15.2 dB
THR=4, SLP= 5 + 9.6 dB
THR=4, SLP=10 + 3.6 dB
THR=4, SLP=15 - 3.8 dB

THR=6, SLP= 0 +16.6 dB
THR=6, SLP= 5 +13.3 dB
THR=6, SLP=10 + 7.9 dB
THR=6, SLP=15 + 1.5 dB

THR=8, SLP= 0 +18.3 dB
THR=8, SLP= 5 +15.6 dB
THR=8, SLP=10 +11.7 dB
THR=8, SLP=15 + 7.0 db

73
--
Joe KB8AP


On Apr 25, 2009, at 8:21 AM, W7TEA wrote:

>
> Joe, following your instructions, I cannot duplicate this on my rig
> listening to a S-9 signal.  I do find that if AGC-THR is set
> below 5, the audio drops significantly when initiating NR at
> my preferred setting, 2-1.  Decreasing the AGC SLP increases
> the audio with NR engaged.
>
> Gary W7TEA