> it is perhaps worth bearing in mind that modern rigs also offer
> excellent filtering so 'pumping the AGC' sounds somehow 'out of tune'
> to my ear.
Pumping the AGC is ALWAYS a factor if the receiver IF bandwidth is
greater than the bandwidth of the desired signal. When operating
PSK31 with a 3 KHz IF bandwidth and "panoramic" (e.g. waterfall)
display, strong undesired signals will effect the AGC - generally
decreasing system gain and causing weaker signals to "fade into
the noise."
The proper way to operate PSK31 is as its inventor envisioned
with narrow IF filters, in single signal mode and tuning with
a spectrum/phase scope. This is the high performance operating
paradigm supported by WriteLog/RTTYrite. Using broadband decode
and wide filters negates most of the benefits of PSK31.
73,
... Joe, W4TV
> -----Original Message-----
> From: writelog-bounces@contesting.com
> [mailto:writelog-bounces@contesting.com] On Behalf Of Alec Otulak
> Sent: Thursday, November 22, 2007 4:01 PM
> To: 'Mark Klocksin'; writelog@contesting.com
> Subject: Re: [WriteLog] Writelog's Future
>
>
>
>
> Hi,
>
> it is perhaps worth bearing in mind that modern rigs also offer
> excellent filtering so 'pumping the AGC' sounds somehow 'out of tune'
> to my ear.
>
> Yours,
> Alec/SP2EWQ
>
>
>
>
>
> -----Original Message-----
> From: writelog-bounces@contesting.com
> [mailto:writelog-bounces@contesting.com] On Behalf Of Mark Klocksin
> Sent: Thursday, November 22, 2007 6:28 PM
> To: writelog@contesting.com
> Subject: Re: [WriteLog] Writelog's Future
>
> Would if I could, Joe. Good to hear it's possible. Maybe someone
> with more knowledge than I will pick up the challenge.
>
> Thanks for the information.
>
> 73, Mark WA9IVH
>
>
> On Nov 22, 2007, at 8:58 AM, Joe Subich, W4TV wrote:
>
> >
> >> We certainly could use a DigPan (or similar) plug in for PSK-31.
> >> Ideally, this would be integrated with WriteLog as elegantly
> >> as MMTTY is for RTTY.
> >
> > Why don't you write the wrapper for MMVARI just as someone else
> > did for MMTTY many years ago? MMVARI is available as an OCX and
> > only needs the appropriate interface for WriteLog to use is as a
> > "loadable TNC."
> >
> > Writelog provides an excellent PSK31 decoder in RTTYrite which
> > works better than DigiPan or MMVARI exactly because it uses
> > narrow filters in the receiver rather than look at a 3 KHz chunk
> > of the band. High performance PSK31 is absolutely impossible
> > with wideband decoders because one either has 'unwanted' signals
> > pumping the AGC or creating IMD in the receiver if the AGC is
> > disabled.
> >
> > 73,
> >
> > ... Joe, W4TV
> >
> >
> >
> >
> >> -----Original Message-----
> >> From: writelog-bounces@contesting.com
> >> [mailto:writelog-bounces@contesting.com] On Behalf Of Mark Klocksin
> >> Sent: Thursday, November 22, 2007 8:14 AM
> >> To: writelog@contesting.com
> >> Subject: Re: [WriteLog] Writelog's Future
> >>
> >>
> >>
> >> We certainly could use a DigPan (or similar) plug in for PSK-31.
> >> Ideally, this would be integrated with WriteLog as elegantly
> >> as MMTTY
> >> is for RTTY.
> >>
> >> This functionality is currently a major weakness of this otherwise
> >> excellent program.
> >>
> >> 73, Mark WA9IVH
> >>
> >>
> >>
> >> On Nov 22, 2007, at 2:55 AM, Aleksander Otulak wrote:
> >>
> >>> Hi Guys,
> >>>
> >>> I bought Writelog a week ago having decided to do so
> >>> basis a general opinion it is the best software for
> >>> digitally transmitted contests. However, on opening it
> >>> I was shocked as, according to present standards,
> >>> its RTTY and PSK interfaces look (gently saying) obsolete.
> >>> The implementation of MMTTY helped a bit, however,
> >>> it has actually reduced available digital contests to RTTY only.
> >>>
> >>> So, my two questions are:
> >>> Are the owners of Writelog interested in further development
> >>> of the software ?
> >>> Are there a team of Writelog developers and/or beta testers
> >>> to whom we could address our wish lists ?
> >>>
> >>>
> >>> Yours,
> >>> Alec/SP2EWQ
> >>>
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