[RTTY] FSK Shift Question

[Art Searle W2NRA]

Hi Tom,

It is probably not the shift (the difference between the Mark and the
Space) that is the problem.  Almost everyone uses a shift of 170Hz.  By
default MMTTY uses a Mark offset of 2125.  That would be the 2125 - 2295
tone pair.  If your rig is set up for a different pair then your TX will
be off frequency from you RX.  Most Yaesus have the option of 2 tone
pairs.  Look in your manual and find the setting where you can change
this.  Try this first.  If your rig can do this then you have to change
the Ham Default in MMTTY to match your rig's setting. 

73 Art W2NRA
"Keep to the code!"
w2nra.com

-----Original Message-----
From: rtty-bounces at contesting.com [mailto:rtty-bounces at contesting.com]
On Behalf Of Tom Martin
Sent: Thursday, January 03, 2008 02:13 PM
To: rtty at contesting.com
Subject: [RTTY] FSK Shift Question

When using MMTY in N1MM for contests with my second radio the FT990,  I
use FSK but many stations tell me I'm off frequency.  I use the HAM
shift in the setup.  Should I use FIXED or FSK for the shift?  I don't
have any problems using MMVARI with AFSK with the 990 but I'd rather use
FSK.  The ALC is difficult to control with the 990.  Before you know it,
when changing frequency, my gain jumps way up.  I'd like the stability
of FSK.  

73,

Tom W8JWN

-- 
I am using the free version of SPAMfighter for private users.
It has removed 2380 spam emails to date.
Paying users do not have this message in their emails.
Get the free SPAMfighter here: http://www.spamfighter.com/len