Re: [Elecraft] K3S - K3 Noise Blanker and Noise Reductor

2016-11-03 Thread Guy Olinger K2AV 
Have not forgotten this.  Have been sick for a while. It's on my reply
list. 73, Guy

On Thu, Oct 13, 2016 at 3:58 PM, glcazz...@alice.it <glcazz...@alice.it>
wrote:

>
> Many thanks Guy for you help.
> I use K3S from april and can be that I havent set at the best the rig.
> I work 90% CW, usually with 500hz 5 pole filter, sometime with the 200hz 6
> pole.
> Usually I work 40-20-17-15-10 meter, in contests also 80 meters.
> In these last months I worked expecially 40-20-18-15.
> Usually I have AGC slow for ragchewing and fast for contests, always qsk
> with a bug.
> PRE - no
> ATT-  no
> AGC - slow, sometime fast
> ANT - a Force 12 C4 yagi (2el 20 - 3el 15 - 3 el 10m - 1 element 40m 17m
> 12m  - also have a dipole 80m-40m inv vee low on a roof at 5th floor; the
> yagi is 8m high from this roof (composite material, including aluminum
> layer), the buildings around are lower.
> RX ANT - no
> WIDTH - the same as xtal filter, 500hz or 200hz.
>
> in the CONFIG MENU I have:
> AGC DCY - nor
> AGC HLD - 0.00
> AGC PLS - nor
> AGC SLP - 012
> AGC THR - 005
> AGC-F - 120
> AGC-S - 020
>
> Now with the 500hz filter and agc fast, no preamp no attenuator,  ant yagi
>  to north america,  in this moment, I have this noise (local time 22.00):
> 40m S7
> 20m S4 S5
> 17m --- S3 S4
> 15m -  S3
> 12 m --- S1 S2
> 28mhz--- S4
> Some time of the day noise from long range radar, wide spectrum military
> emissions or domestic applience or lights noises go up to S9.
>
> You asked the higher signals that I receive: say 20dB over S9 or even 30dB
> over S9 from a pair of local hams at the other side of my town.
>
> But I work all kind of signals low and high (327 countries DXCC and a lot
> of ragchew CW).
>
> Thanks for your patience :)
>
> Ian IK4EWX
>
>
>
>
>
>
> ----Messaggio originale
> Da: k2av....@gmail.com
> Data: 13-ott-2016 21.08
> A: "Gian Luca Cazzola"<glcazz...@alice.it>, <donw...@embarqmail.com>
> Ogg: Re: [Elecraft] K3S - K3 Noise Blanker and Noise Reductor
>
>
> Hi, Ian,
>
> Can you possibly tell me these settings, please? You are getting
> results very, very different than I do.
>
> What bands are you using?
>
> On each band in question, what is the noise floor on the s-meter when
> the band is open.
>
> On each band in question, what is the s-meter reading for the loudest
> signals you are receiving when the band is open.
>
> On each band in question, what are these settings made from the front
> panel: PRE, ATT, AGC, ANT, RX ANT, WIDTH,
>
> What are these settings made in the CONFIG MENU: AGC DCY, AGC HLD, AGC
> PLS, AGC SLP, AGC THR, AGC-F, AGC-S
>
> There is some kind of interaction with NB and NR for each of these.
> Perhaps there are one or two of them that are reducing your results.
>
> 73, Guy K2AV
>
>
>
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Re: [Elecraft] K3S - K3 Noise Blanker and Noise Reductor

2016-10-13 Thread Gian Luca Cazzola 
Don, sorry, but the NB doesnt work even on statics caused by rain or snow.
I really think that it doesn’t work well.
I tried it ON and with different settings, but in no way I could appreciate it.
If it work on impulse woodpeaker noise i really dont care: woodpeaker doesnt 
exist now. 
But today we have other radar noises on which the K3S doesnt work.
So it seem to me useless.
Also, the noise reduction of NR is really limited, I have not great results 
using  it.
But, please say me: on your K3 do you sometime need to use NB and NR? And how 
you regulated them in the menu?
Thanks
Ian IK4EWX



> Il giorno 13 ott 2016, alle ore 14:27, Don Wilhelm  
> ha scritto:
> 
> Ian,
> 
> A noise blanker will work best on impulse noise - such as automotive ignition 
> noise or lightning spikes.  It needs a fast pulse rise time to trigger.
> 
> A noise blanker works by punching a hole in the signal - and if the holes are 
> too wide or too frequent, you will find what is left of the signal path to be 
> distorted.
> 
> A noise blanker will not work on band noise or other forms of more constant 
> noise.  That is what Noise Reduction is for.
> 
> Noise Reduction works on correlation - the algorithm looks for what might be 
> a real signal and builds a filter around it.
> 
> 73,
> Don W3FPR
> 
> On 10/13/2016 8:11 AM, Gian Luca Cazzola wrote:
>> I am tha satisfied owner of an Elecraft K3S. I think that for a cw operator 
>> (I work 99percent CW) it is a great rig, can be the absolute best on the ham 
>> rigs market.
>> It has only a really poor noise blanker.
>> I live in a town, downtown. I have noise from residential electric lights or 
>> other electrical gears. I see on my P3 panadaptor‎ noise from radar or other 
>> military wide trasmission.
>> On none of these noises the NB work.
>> I tried different NB setting, but each, IF NB and DSP NB, none of them 
>> reduce really noises.
>> Only NR seem to have a limited little effective ‎ result on band noise.
>> I would like your opinion about NB and NR and know from  K3 es K3S owners 
>> living ‎in town how they set them.

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Re: [Elecraft] K3S - K3 Noise Blanker and Noise Reductor

2016-10-13 Thread Don Wilhelm 

Ian,

A noise blanker will work best on impulse noise - such as automotive 
ignition noise or lightning spikes.  It needs a fast pulse rise time to 
trigger.


A noise blanker works by punching a hole in the signal - and if the 
holes are too wide or too frequent, you will find what is left of the 
signal path to be distorted.


A noise blanker will not work on band noise or other forms of more 
constant noise.  That is what Noise Reduction is for.


Noise Reduction works on correlation - the algorithm looks for what 
might be a real signal and builds a filter around it.


73,
Don W3FPR

On 10/13/2016 8:11 AM, Gian Luca Cazzola wrote:

I am tha satisfied owner of an Elecraft K3S. I think that for a cw operator (I 
work 99percent CW) it is a great rig, can be the absolute best on the ham rigs 
market.
It has only a really poor noise blanker.
I live in a town, downtown. I have noise from residential electric lights or 
other electrical gears. I see on my P3 panadaptor‎ noise from radar or other 
military wide trasmission.
On none of these noises the NB work.
I tried different NB setting, but each, IF NB and DSP NB, none of them reduce 
really noises.
Only NR seem to have a limited little effective ‎ result on band noise.
I would like your opinion about NB and NR and know from  K3 es K3S owners 
living ‎in town how they set them.

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[Elecraft] K3S - K3 Noise Blanker and Noise Reductor

2016-10-13 Thread Gian Luca Cazzola 
I am tha satisfied owner of an Elecraft K3S. I think that for a cw operator (I 
work 99percent CW) it is a great rig, can be the absolute best on the ham rigs 
market.
It has only a really poor noise blanker.
I live in a town, downtown. I have noise from residential electric lights or 
other electrical gears. I see on my P3 panadaptor‎ noise from radar or other 
military wide trasmission.
On none of these noises the NB work. 
I tried different NB setting, but each, IF NB and DSP NB, none of them reduce 
really noises.
Only NR seem to have a limited little effective ‎ result on band noise.
I would like your opinion about NB and NR and know from  K3 es K3S owners 
living ‎in town how they set them.
Thanks
Ian, IK4EWX

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