[WriteLog] low tones

Mon Feb 16 13:42:46 EST 2004

A couple of comments on the Pro II.

1) The audio inputs and outputs are not consistent
    a) When you go to LSB-D, you can no longer use the mic input, you must =
use the rear panel input
    b) When you go to RTTY, the fixed level audio out is shut off.  Most di=
ssappointing.
2) The rtty TPF seems to work real well, but it's not easy on the ears to l=
isten to.
3) Using the LSB-D mode over the last two weekends, I seem to be able to de=
code more than I can hear - literally.

I was calling CQ on 10 meters yesterday and listening for responses instead=
 of watching the screen.  I reached up and pressed the F1 button, and notic=
ed that VE9DX's callsign was on the screen a couple of times.  I stopped my=
 CQ, sent him an exchange and logged a QSO with a station my ears could not=
 detect at all.  This is cool stuff.

I'm running Writelog with MMTTY, and the computer is an IBM 600E Notebook r=
unning Win98SE.  Audio in & out on the DIN connector on the back of the Pro=
 II and using a Microham USB interface for PTT & rig control.

73,
Bob N5NJ

> ------------Original Message------------
> From: "Ron St.Laurent ND5S" <r.stlaurent at comcast.net>
> To: <writelog at contesting.com>, "Jerry Pixton" <jpixton at shentel.net>
> Date: Mon, Feb-16-2004 1:30 PM
> Subject: Re: [WriteLog] low tones
> =

> Hi Jerry,
> =

> To clarify, I use FSK.  I must agree with you that using the TPF also sen=
ds
> a lot of extra noise to the headsets.  It does it here so your radio is o=
kay
> (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 bothe=
r
> though.  Thanks for your comments.
> =

> Ron ND5S
> =

> Visit my Website at:
> www.qsl.net/nd5s
> =

> ----- Original Message ----- =

> From: "Jerry Pixton" <jpixton at shentel.net>
> To: "Ron St.Laurent ND5S" <r.stlaurent at comcast.net>;
> <writelog at 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 rtt=
y
> > 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 audi=
o
> > 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 t=
hat
> > 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 o=
n
> > 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 copyin=
g
> > 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 you=
r
> RTTY
> > >FILTER ON and exiting the menu you will see TPF on the top line of you=
r
> > >display showing that it is activated.  Neat toy!
> > >
> > >Ron ND5S
> > >
> > >Visit my Website at:
> > >www.qsl.net/nd5s
> > >
> > >----- Original Message -----
> > >From: "Jerry Pixton" <jpixton at shentel.net>
> > >To: <writelog at 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 wonderfu=
l
> 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 va=
lue
> in
> > > > mmtty.ini to get exactly 1415 hz.
> > > >
> > > > Now my question -
> > > >
> > > > Are there other mmtty values that I should be worrying about to adj=
ust
> the
> > > > different algorithms for these new tones?
> > > >
> > > > Jerry, W6IHG
> > > > ------------------------------------------
> > > > Dr. Jerry R. Pixton, PIXOS Designs LLC
> > > > http://www.pixos.com/designs/RadioTuner/
> > > > jpixton at shentel.net
> > > > ------------------------------------------
> > > >
> > > >
> > > > _______________________________________________
> > > > WriteLog mailing list
> > > > WriteLog at 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 at shentel.net
> > ------------------------------------------
> >
> >
> >
> =

> =

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