[Elecraft] Tweak for phone?

[W0MU Mike Fatchett]

I have the 1.8 filter and I will have to look for that sweet spot.  I found
I was loosing too much of intelligibility when I switched in the 1.8 filter.
This was most noticeable on weaker stations.  I have the 2.8 and ran the dsp
down to about 2.3 which worked pretty well for me.  The DSP filter between
my ears works very well for me.  

I spent more time adjusting the rf gain.

I did notice that I was not mentally complaining about wide stations or lots
of splatter.  The roofing filters work very well. 


"A slip of the foot you may soon recover, but a slip of the tongue you may
never get over." Ben Franklin
-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Dave Hachadorian
Sent: Monday, March 09, 2009 12:07 AM
To: Elecraft reflector; Dave LaBat
Subject: Re: [Elecraft] Tweak for phone?

There's a sweet spot for ssb contesting with DSP width = 1.8 and shift FC =
1.1  You can even go down to width = 1.5 if the going gets really rough. I
have the 1.8 filter, but I can't hear any major difference when it switches
in. The DSP filter has narrower skirts than the crystal filter. The 1.8
crystal filter is good for peace of mind in a contest, but I really don't
think it's necessary with judicious reduction of RF gain, and turning off
preamp and attenuator when conditions allow.

QRM WAS rough this weekend with everyone being on 20 meters. 
I thought the K3 did very well with it. I was able to read weak ssb signals
with much louder signals 1.5 KHz away, which is pretty darn good.

Dave Hachadorian, K6LL
Yuma, AZ


----- Original Message -----
From: "Dave LaBat" <dlabat at ca.rr.com>
To: "K3_Discussion_Group" <elecraft at mailman.qth.net>
Sent: Monday, March 09, 2009 5:11 AM
Subject: [Elecraft] Tweak for phone?


> Interesting weekend. First time I've had strong enough 
> signals at the K3 that I felt like I was pushing it at 
> all.
>
> I have my K3 configured with only a 250 Hz for extra 
> filters, ridiculously narrow for everyday CW, great in a 
> contest! I have no other SSB filters.
>
> With CW I have noticed that seemingly no matter how strong 
> the nearby signals I can dig out the weak one in between. 
> Didn't seem that way, as much. on phone. I struggled to 
> pull the weak one with nearby strong stations. Used the 
> Attenuator a lot this weekend.
>
> I noticed when I tried to narrow the passband from the 2.7 
> nominal that the signals often decreased in 
> intelligibility. I used 1.8 K filters on my Yaesu FT 1K. I 
> also notice I was not tuning dead on to SSB signals, I 
> seemed to be off to the side emphasizing hi end response. 
> I could hear as I swung past the station where the more 
> dead on was. I haven't noticed that with other rigs.
>
> So I am asking:  Would the 1.8 help, and still maintain 
> good intelligibility? What other tweaks or changes have 
> the list members used for top phone performance.
>
> As an aside, I flipped a FT-990 in at the end of the 
> contest.... wow, I guess part of it is I am spoiled!
>
> 73, Dave NT6AA
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