[Elecraft] 2.13 beta

[Robert Paull]

Hi Lyle:
I agree with Joe if I am using psk (data A) there are a lot of times I need filters below 150 hz. PSK having the least bandwidth requirement of the data modes I would have thought you would have kept it at below 150 hz.

Just my 2 cents worth

Bob, KK6UE

--- On Fri, 7/4/08, Joe Subich, W4TV <lists at microham-usa.com> wrote:

> From: Joe Subich, W4TV <lists at microham-usa.com>
> Subject: RE: [Elecraft] 2.13 beta
> To: "'Lyle Johnson'" <kk7p at wavecable.com>, kk6ue at yahoo.com
> Cc: elecraft at mailman.qth.net
> Date: Friday, July 4, 2008, 12:36 AM
> Lyle, 
> 
> > 50 Hz and 100 Hz BW are available in PSK D.
> > 
> 
> With a 1500 Hz center frequency the narrow filter should be
> made 
> available in DATA A.  I would also argue that it should be
> made 
> available in AFSK A if MARK <> 2125 (e.g. CF=1000Hz
> or 1360Hz). 
> Both DATA A and AFSK A are useful for PSK31 which can
> benefit 
> from the ultra narrow filtering. 
> 
> 73, 
> 
>    ... Joe, W4TV 
>  
> 
> 
> 
> > -----Original Message-----
> > From: elecraft-bounces at mailman.qth.net 
> > [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
> Lyle Johnson
> > Sent: Thursday, July 03, 2008 11:59 PM
> > To: kk6ue at yahoo.com
> > Cc: elecraft at mailman.qth.net
> > Subject: Re: [Elecraft] 2.13 beta
> > 
> > 
> > > ...I can now only drop to 150 hz in data mode,
> not 50 like 
> > I was able 
> > > to with 2.10 Any one else seeing this.
> > 
> > 50 Hz and 100 Hz BW are available in PSK D.
> > 
> > The reason they are not available in other data modes
> is because they 
> > are not applicable (AFSK and FSK D), or the fact that
> the center 
> > frequency allowed for the sharpest FIR filters is
> limited to 
> > something 
> > under 2 kHz makes them not general.
> > 
> > 73,
> > 
> > Lyle KK7P
> > 
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