FILTER selection.

[Ruben Navarro Huedo-2]

Hello friends:
I know that this question has been done, but i have to ask to be sure of
to buy the correct.
I own a k3/100 with ATU and Receiver antenna input.
It has original 2700 - 5 pole filter.
I use my k3 for ssb and rtty contest and some dx in the same modes.
Some questions:
If i buy 2800 - 8 pole filter. Do i have to extract the 2700 filter?
If i have the 2 filters (2700 and 2800) in the radio and i have the
bandwidth at 2400 hz. What filter is used?
Normally i like use 2200 and 2000 in my Icom for SSB and 400 for RTTY.
What is your advice for filters?

TNX a lot for your help.

--
Rubén Navarro Huedo - EA5BZ
http://www.palotes.com
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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

[Julius Fazekas n2wn]

<quote author="Ruben Navarro Huedo-2">
Hello friends:
I know that this question has been done, but i have to ask to be sure of
to buy the correct.
I own a k3/100 with ATU and Receiver antenna input.
It has original 2700 - 5 pole filter.
I use my k3 for ssb and rtty contest and some dx in the same modes.
Some questions:
If i buy 2800 - 8 pole filter. Do i have to extract the 2700 filter?

It depends, but no you don't...

If i have the 2 filters (2700 and 2800) in the radio and i have the
bandwidth at 2400 hz. What filter is used?

It'll use the 2700...

Normally i like use 2200 and 2000 in my Icom for SSB and 400 for RTTY.
What is your advice for filters?

If you're thinking about installing a 250/200 Hz filter, go with the 500 Hz. If you're just going to install a 500/400 Hz, the skirts are steeper on the 400 Hz, somewhat  better in very crowded conditions. For contesting, many have gone with the 400 Hz, but I haven't seen a real advantage to adding a sharper filter (250Hz in my case) yet.

73,
Julius

[Joe Subich, W4TV-4]

> If i buy 2800 - 8 pole filter. Do I have to extract the
> 2700 filter?

There is no reason to have both the 2700 and 2800 Hz filters.
You will not be able to detect any difference between the two.  

> If i have the 2 filters (2700 and 2800) in the radio and i have
> the bandwidth at 2400 hz. What filter is used?

The 2700 Hz filter.

> Normally i like use 2200 and 2000 in my Icom for SSB and 400
> for RTTY. What is your advice for filters?

If you like 2200 Hz in your Icom for SSB and 400 Hz for RTTY,
you would be better served to add the KFL3A-2.1K (instead of
the KFL3A-2.8K) for SSB and the KFL3A-400 for CW/RTTY

73,

   ... Joe, W4TV
 

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Ruben
> Navarro Huedo
> Sent: Thursday, March 19, 2009 5:09 PM
> To: [hidden email]
> Subject: [Elecraft] FILTER selection.
>
>
> Hello friends:
> I know that this question has been done, but i have to ask to
> be sure of
> to buy the correct.
> I own a k3/100 with ATU and Receiver antenna input.
> It has original 2700 - 5 pole filter.
> I use my k3 for ssb and rtty contest and some dx in the same
> modes. Some questions: If i buy 2800 - 8 pole filter. Do i
> have to extract the 2700 filter? If i have the 2 filters
> (2700 and 2800) in the radio and i have the
> bandwidth at 2400 hz. What filter is used?
> Normally i like use 2200 and 2000 in my Icom for SSB and 400
> for RTTY. What is your advice for filters?
>
> TNX a lot for your help.
>
> --
> Rubén Navarro Huedo - EA5BZ
> http://www.palotes.com 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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