[Elecraft] K3 CW filters advice

Arie Kleingeld PA3A pa3a at xs4all.nl
Fri Feb 3 15:39:28 EST 2012


Robert,

Since you are an experienced CW operator you already know what 
bandwidth(s) you like.

For the K3 you need the roofing filters for those bandwidths, just like 
a transceiver without DSP.
If your Roofing filter is too wide, you'll be in trouble if signals 
nearby are stronger than about S9+20. If those strong sigs pass through 
your roofing filter, the DSP will not take them out completely and your 
agc will be pumped up, often sounds like keyclicks. As soon as the 
roofing filter keeps the strong signals out, the K3 is super!

My filters: 400Hz 8-pole and 200Hz 5-pole. Did the CQ160cw  with this 
config last weekend at clubstation PI4D.  We had a very good time!

73
Arie PA3A

Op 3-2-2012 21:14, Robert G. Strickland schreef:
> Well, I've decided to get the K3. I've been reading all posts concerning
> filters [and everything about filters]. I'm a 98% CW operator, mostly
> chasing DX and contesting [little pistol]. I'm looking for
> recommendations for (1) a "brick wall" narrow CW filter for contesting
> and weak signal work, and (2) something wider for casual looking around
> and rag chewing. What should I buy? Thanks for any and all comments.
>
> ...robert


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