CW roofing filters

[KARL MARDERIAN]

What do you all think about 500hz 8 pole filter. You have order from  
inrad?
       N6XVT
Sent from my iPhone
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[Cookie]

With 19 months of pretty heavy CW operation, I have not detected a single time when I thought a steeper skirt on my 5 pole 500 Hz filter would have helped, but I think you can order one from Inrad if you like.
 Willis 'Cookie' Cooke
K5EWJ




________________________________
From: Karl Marderian <[hidden email]>
To: [hidden email]
Sent: Wed, February 17, 2010 3:24:32 PM
Subject: [Elecraft] CW roofing filters


What do you all think about 500hz 8 pole filter. You have order from 
inrad?
      N6XVT
Sent from my iPhone
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[KARL MARDERIAN]

Sorry for misleading you with my poor sentance sructure. I do have a  
500hz 8
pole and I know you order it from Inrad. If the 5 plies are better why  
even sell the 8 pole? Is there some advantage to them?
      N6xvt

Sent from my iPhone

On Feb 17, 2010, at 1:51 PM, WILLIS COOKE <[hidden email]> wrote:

> With 19 months of pretty heavy CW operation, I have not detected a  
> single time when I thought a steeper skirt on my 5 pole 500 Hz  
> filter would have helped, but I think you can order one from Inrad  
> if you like.
>
> Willis 'Cookie' Cooke
> K5EWJ
>
>
> From: Karl Marderian <[hidden email]>
> To: [hidden email]
> Sent: Wed, February 17, 2010 3:24:32 PM
> Subject: [Elecraft] CW roofing filters
>
>
> What do you all think about 500hz 8 pole filter. You have order from
> inrad?
>       N6XVT
> Sent from my iPhone
> ______________________________________________________________
> 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
>

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[Bill W4ZV]

WILLIS COOKE-2 wrote

With 19 months of pretty heavy CW operation, I have not detected a single time when I thought a steeper skirt on my 5 pole 500 Hz filter would have helped, but I think you can order one from Inrad if you like.

I used the Elecraft 500 Hz 5-pole filters for ~18 months but switched to Inrad 8-pole 500s when they became available.  I'm also probably not a good benchmark because I do serious contesting and DX-ing on 160m (the band that separates the men from the boys).  I do still like my 200 Hz 5-pole for extreme (<1%) cases.  Other bands are not as critical since they don't attempt to pack hundreds of S9+30 signals into 50 kHz and DX signals are stronger.  

I can see the day coming when 200 Hz may become the new norm for CW contests as more people use clean rigs like the K3 and zero beat more closely (due to spectrum displays or internal zero beat indicators like the K3's CWT).  

73,  Bill