Hi Jerry,
To clarify, I use FSK. I must agree with you that using the TPF also sends
a lot of extra noise to the headsets. It does it here so your radio is okay
(well, 2 data points confirm). I will have to try the LSB-D which I have
not. Having to reset each time the spot facility is used will be a bother
though. Thanks for your comments.
Ron ND5S
Visit my Website at:
www.qsl.net/nd5s
----- Original Message -----
From: "Jerry Pixton" <jpixton@shentel.net>
To: "Ron St.Laurent ND5S" <r.stlaurent@comcast.net>;
<writelog@contesting.com>
Sent: Monday, February 16, 2004 1:51 PM
Subject: Re: [WriteLog] low tones
> Ron, et al
>
> Yes, it is a neat toy. And IMHO that is just what it is. I used the rtty
> mode for about a year and used the special twin peak filter when things
> really got tough. BUT I could not stand to listen at the increased audio
> processing noise that came along with the filter. It drove me crazy. If I
> really needed the twin peak I had to turn my headset audio OFF. Maybe that
> is a problem with my radio, I haven't asked others about the audio
> processing noise when using the twin peak filter. (By way of comparing, I
> just got the MFJ audio processor which also has a twin peak filter that is
> quiet). And the regular rtty filters, even set at 100 hz are terrible
> compared to the "Brickwall" filters that Icom runs in LSB-D. I gave it my
> trail under fire on 20m this week end (had one radio doing mostly s&p on
> 20m). Only a very few times would I hear a REALLY strong station off
> frequency that was audible but that still did not interfere with copying
> the message. Not at all like the rtty mode performance where everyone
> several kHz away pumps the AGC.
>
> I am just learning to live with the downsides, I will continue to use
LSB-D
> until someone can tell me how to trick the rig to use the data filters in
> RTTY mode. Best of all worlds, some firmware that moves that nice data
> filter up to 2210 hz so that FSK can be used.
>
> Jerry, W6IHG
>
>
>
>
>
> At 12:11 PM 2/16/2004 -0500, Ron St.Laurent ND5S wrote:
> >Hi Jerry,
> >
> >Have you tried the TPF Twin Peak Filter on your ProII? It is a great
tool.
> >It "enhances" the mark and space tones on a given frequency and I have
> >copied stations I would have otherwise lost.
> >
> >Put your rig in RTTY mode. On the buttons just to the left of the
display
> >push and hold RTTY FIL, this will bring up a sub menu. Turn Twin Peak
> >Filter ON. When you look at your MTTY "histogram" display in receive you
> >will see how the frequencies at mark and space are enhanced. With your
RTTY
> >FILTER ON and exiting the menu you will see TPF on the top line of your
> >display showing that it is activated. Neat toy!
> >
> >Ron ND5S
> >
> >Visit my Website at:
> >www.qsl.net/nd5s
> >
> >----- Original Message -----
> >From: "Jerry Pixton" <jpixton@shentel.net>
> >To: <writelog@contesting.com>
> >Sent: Monday, February 16, 2004 11:21 AM
> >Subject: [WriteLog] low tones
> >
> >
> > > All you low toners
> > >
> > > You can tell I have nothing better to do today, HI
> > >
> > > I am using mmtty plug in to rtty windows. I have changed one rig to
use
> > > AFSK with 1415\1585 hz tones because the IC756proII has a wonderful
data
> > > filter centered at 1500 hz in LSB-D mode. IMHO much better then its
RTTY
> > > filters. (The down side is clicking on the bandmap or a packet spot
puts
> > > the rig in LSB not LSB-D and so you have to manually switch back)
> > >
> > > So I have mmtty using 1415 and 1585 hz tones - had to change one value
in
> > > mmtty.ini to get exactly 1415 hz.
> > >
> > > Now my question -
> > >
> > > Are there other mmtty values that I should be worrying about to adjust
the
> > > different algorithms for these new tones?
> > >
> > > Jerry, W6IHG
> > > ------------------------------------------
> > > Dr. Jerry R. Pixton, PIXOS Designs LLC
> > > http://www.pixos.com/designs/RadioTuner/
> > > jpixton@shentel.net
> > > ------------------------------------------
> > >
> > >
> > > _______________________________________________
> > > WriteLog mailing list
> > > WriteLog@contesting.com
> > > http://lists.contesting.com/mailman/listinfo/writelog
> > > WriteLog on the web: http://www.writelog.com/
> > >
>
> ------------------------------------------
> Dr. Jerry R. Pixton, PIXOS Designs LLC
> http://www.pixos.com/designs/RadioTuner/
> jpixton@shentel.net
> ------------------------------------------
>
>
>
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