Steve,

Thanks for pointing this out. I was wondering whether there was a config or
ini file I could adjust, but I hadn't gotten around to looking yet.

From what I read the SQ button in the control panel just enables or disables
the squelch, and adjusting the level involves moving an indicator via the
mouse. I think I will call up a sighted friend who uses MMTTY, and ask him
to adjust his squelch setting to see how the config file entries are
affected.

So, have you been able to adjust your setup so MMTTY doesn't decode anything
when there is no signal in the passband? I know you said you don't use the
software squelch.

--Doug, AC7T
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Steve Forst
Sent: Sunday, July 08, 2012 11:18 AM
To: [log in to unmask]
Subject: Re: RTTY for Doug

Doug,

I'll throw one more thing at you:  If you can't set the squelch to your 
liking via the control panel, maybe you   can edit the config file.

I've found over the years that some programs that aren't very accessible 
in the normal fashion  can be  tweaked   via the configuration file.

I haven't done this, and can't promise it will work, but may be worth a try.

You will find the file under the  mmtty folder of your programs files
folder.  It's just a text file and will open with notepad.  I'd suggest
backing up the file first just to be safe.

In the text file you will see:
"AFCSQ=32"  which is the AFC squelch you find  under the "setup mmtty" 
dropdown menu.

Further down is:

SQ=0
SQLevel=6.000000e+02

I'm wondering if changing the sq=0 to a higher number  may be the same 
as changing it  from the control panel.   I have no idea what the second 
line is, and I wouldn't mess with it myself, but you may be braver than me.

Even if this works, it's not something you would do on the fly while
operating, but  maybe you could find a setting that gives satisfactory
results.

73, Steve KW3A