I normally start with the IF NB OFF. Turn on the DSP NB and adjust the
level for what I feel is optimum effect. Then remember the ## and set
it to OFF. Then turn on the IF NB, set it to what I feed is optimum
effect. Then go back to the DSP NB and set it to the previous value.
Best done when no signal, other than noise, is on the band/frequency.
73
Bob, K4TAX
On 10/8/2018 1:36 PM, Don Wilhelm wrote:
Mike,
If your noise source has changed, that is adequate reason the NB does
not work as it used to. With NB and NR there is no one solution that
fits all noise sources. You will just have to experiment a bit to see
which settings are most effective.
73,
Don W3FPR
On 10/8/2018 1:46 PM, Mike Greenway wrote:
I have 2 K3 and a K3S and for some time I have noticed all 3 doing
something that seems incorrect. All the radios are all up to correct
Rev levels. For years with my normal local noise, I always ran the
NB at IF Nar 1-4 most all the time with good success. In recent
months, maybe more, on Nar only when I get up to NAR 1-4 to 1-7 more
noise than what I am trying to remove appears ie with no NB and S4
with some minor local line noise, at NB Nar 1-7 the noise is S6 or
more. I don’t see that on any Med and Wide. I don’t see any
difference in what band I am on but on the higher bands I have PRE 1
on with AGC Fast or Slow. Any input from others that might have seen
this is appreciated. I know in past years this did not occur and I
have been lax in asking the question.
I actually checked at another QTH with only S2 on the meter and got
the same results.
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