[Elecraft] Determining best roofing filter with DSP??

[Brett Howard]

I see the best bet is to get the 2.8Khz rock to start with.  Just pony
up the upgrade price and start there...  Trust me if you decide you want
to use 5 pole filters instead I GUARANTEE you that you can sell the 2.8
and you'll find plenty of people willing to sell you a 2.7K 5 pole
filter (as they pulled them out of their radio to upgrade to the 8 pole
models)...

Recently I had the 1.8K filters in my radio for SSB contesting.  I
decided I was interested in the 1.5K filters from INRAD.  What I did is
I then dialed my DSP down to 1.5K and I listened to some SSB stations on
a relatively calm day (no big strong guys right next to the stations I
was listening to).  I then determined that 1.5K was wide enough with
proper tuning to copy an SSB station.  So I then sold my 1.8K filters
and bought the 1.5K filters.  

I recommend you do just that!  Buy the 2.8K filter upgrade with your K3.
Then play with the K3 as it is and listen to some stations.  Neck down
on these stations with the DSP alone and find out where it is you like
to use your K3.  Then if you are patient enough try doing the same
during a contest.  You may find that you're perfectly happy with the
DSP's performance alone.  Then think of all the money you've saved...

But then I've got 10 8-pole filters in my radio as of today when I just
installed the last of them...

~Brett (KC7OTG)

On Wed, 2010-02-24 at 14:30 -0800, callen1155 wrote:
> 
> Hello guys.
> 
> Sorry about all the questions but I think this is the last one before I
> press the "buy" button for a K3.
> 
> Once again a question about cw roofing filters.
> 
> I am initially ordering the K3 without the 2nd receiver but do plan on
> getting one within a year. 
> 
> That said, and knowing it's best to have 'matching roofing filters' for both
> receivers, even after all the reading I still have no idea what would be the
> best roofing filter to get. It seems to be such an individual choice.
> Ideally, I'd prefer to purchase only one filter (or one for each receiver)
> and want to make the best filter choice for my operating. 
> 
> So if I order the K3 with no roofing filters, can I determine from operating
> with just the DSP which cw roofing filter would be the optimal one for me.
> 
> Or is the above an exercise in futility and I just need to order say a 400
> and see how that does before I'll know? 
> But then again I guess it wouldn't be 'matched'' when I get one for the
> second receiver.
> 
> Too many decisions!
> 
> thanks again.
> chuck
> af4xk