Filter

[Laurens PD9X]

Hello all,

I want to order a SSB filter for my K3, i only have now the standard 2.7K.
Wich do i have to choose:

8-pol 5-pol? Whats the different?
2.1K 1.8K or 1,5K?
Inrad or Elecraft?


I only like contesting in SSB, and prefer 40meter band

I 'd like to see your recommandations



--
*73*
*
*
*Laurens Sierdsma PD9X*
*Langezwaag*
*www.pd9x.nl* <http://www.pd9x.nl>
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[ve3dvy]

I currently have the 1.8 filter.   and it works fine for me.   however
don't expect miracles  I am not sure it its really all that needed.    
If you are in a location that you get a lot of very strong signals in a
contest  the filter will help more when adjacent strong signals start
AGC acting on it and effect the level of weak signal you are trying to
dig out. however in most cases The excellent dsp filter will do the  
work most of the time anyway and the added filter will not do much
unless the guy a few KHZ away is really strong.

     On the other hand    in CW and digital using narow filters will
have a much greater noticeable impact as the signals are much closer
together.



  On 3/6/2013 07:08, Laurens Sierdsma wrote:

> Hello all,
>
> I want to order a SSB filter for my K3, i only have now the standard 2.7K.
> Wich do i have to choose:
>
> 8-pol 5-pol? Whats the different?
> 2.1K 1.8K or 1,5K?
> Inrad or Elecraft?
>
>
> I only like contesting in SSB, and prefer 40meter band
>
> I 'd like to see your recommandations
>
>
>

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[Michael Adams]

I wondered the same thing this time last year when I was ordering my K3.

If I had to do it again, I would choose:

- the FM filter (in case you want to tx/rx AM or FM). I got the AM filter
(not planning on doing any FM), but now that the firmware supports AM thru
the FM filter...

- the 2.8 filter for SSB.  I also have the 1.8 filter, but I find I don't
use it much for phone, even during contests. I do use the filter when
tuning around for RTTY contacts, but I probably would be content with the
2.8 for this usage.

- the 400 filter for CW

- the 250 filter for RTTY & narrower modes in congested conditions.

I went with 8 pole filters mostly because I wasn't getting the second
receiver, but I didn't want to have to worry about crystal-matching if/when
I add it in the future.

Don't forget the BPF if you are in MARS or like listening around away from
the amateur bands.
--
Michael D. Adams (N1EN/4) | Atlanta, Georgia | [hidden email]

On Mar 6, 2013, at 7:08 AM, Laurens Sierdsma <[hidden email]> wrote:

Hello all,

I want to order a SSB filter for my K3, i only have now the standard 2.7K.
Wich do i have to choose:

8-pol 5-pol? Whats the different?
2.1K 1.8K or 1,5K?
Inrad or Elecraft?


I only like contesting in SSB, and prefer 40meter band

I 'd like to see your recommandations



--
*73*
*
*
*Laurens Sierdsma PD9X*
*Langezwaag*
*www.pd9x.nl* <http://www.pd9x.nl>
______________________________________________________________
Elecraft mailing list
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email] <[hidden email]>

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[N0AZZ]

If you're only going to use SSB the 2.8 8 pole filter will serve you well
nice skirts and maybe the 1.0 8 pole for the narrow would be all you need.
The suggestion for the GBP filter is a good thought then the FM filter also.

Fred/N0AZZ

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Michael Adams
Sent: Wednesday, March 06, 2013 10:26 AM
To: [hidden email]
Subject: Re: [Elecraft] Filter

I wondered the same thing this time last year when I was ordering my K3.

If I had to do it again, I would choose:

- the FM filter (in case you want to tx/rx AM or FM). I got the AM filter
(not planning on doing any FM), but now that the firmware supports AM thru
the FM filter...

- the 2.8 filter for SSB.  I also have the 1.8 filter, but I find I don't
use it much for phone, even during contests. I do use the filter when tuning
around for RTTY contacts, but I probably would be content with the
2.8 for this usage.

- the 400 filter for CW

- the 250 filter for RTTY & narrower modes in congested conditions.

I went with 8 pole filters mostly because I wasn't getting the second
receiver, but I didn't want to have to worry about crystal-matching if/when
I add it in the future.

Don't forget the BPF if you are in MARS or like listening around away from
the amateur bands.
--
Michael D. Adams (N1EN/4) | Atlanta, Georgia | [hidden email]

On Mar 6, 2013, at 7:08 AM, Laurens Sierdsma <[hidden email]> wrote:

Hello all,

I want to order a SSB filter for my K3, i only have now the standard 2.7K.
Wich do i have to choose:

8-pol 5-pol? Whats the different?
2.1K 1.8K or 1,5K?
Inrad or Elecraft?


I only like contesting in SSB, and prefer 40meter band

I 'd like to see your recommandations



--
*73*
*
*
*Laurens Sierdsma PD9X*
*Langezwaag*
*www.pd9x.nl* <http://www.pd9x.nl>
______________________________________________________________
Elecraft mailing list
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email] <[hidden email]>

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Please help support this email list: http://www.qsl.net/donate.html
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