[Elecraft] K3 noise B and R

[David Cutter]

John

I wondered what filter bandwidth settings you had.  A narrow bw of course 
reduces the noise getting to our ears.  How did you handle cw and ssb in 
that respect?

David
G3UNA


> The N0SS demo is very impressive. The noise sounds like what I have here 
> in
> the city suburbs most (all) of the time. But here hitting  "NB" has no
> tangible effect. I have not found it useful !  (OK;  I probably need to 
> read
> the manual and play with the settings.)
> On the other hand,  "NR" does work well provided the wanted signal is 
> strong
> enough. (Once again, read the manual, I know ...)
>
> On 80m I have now adopted a different approach to the awful local noise
> levels. I found that hitting "ATT" was very effective in reducing unwanted
> noise, especially when listening to weaker signals, including VP6DX over 
> 8000
> miles away and nothing like as loud in here as on the N0SS recordings.
> Today I tried listening to VP6DX on 80 with ATT set to OFF and the noise 
> was
> painful. Hitting PRE made it far worse. NR did not really help, but  with 
> ATT
> ON, I worked them on 80m CW with just 10w ....
> The antenna here is a 20m wire bisquare, bottom corner about 7 feet off 
> the
> ground and firing vertically upwards on 80.
> As the VP6 op said when I told him  .... "OUCH"
> But the mojo sure works, because I also made it on 80 with 100w of SSB !
> Again this was with ATT  ON. PRE seems best left for the HF bands, 20m and
> up. But  ATT is a powerful option when all else fails.
> John G3JAG  K3 #107 K2 # 609
>