[Icom] Pro2 question RTTY filter

WA9ALS - John [email protected]
Wed, 27 Feb 2002 22:35:01 -0500


> On Thu, 28 Feb 2002 00:13:41 +0100 "Ekki Plicht" 
> <[email protected]> writes:
> > Hi all,
> > does the new IC-756Pro2 allow to choose which tones (hi or low) are
> > used when the RTTY filter is turned on? 
> 
> Hi Ekki
> 
> I looked through my manual and saw no reference to that 
> selection.   It
> does indicate the pass band tuning knob becomes an IF shift 
> funtion during RTTY operation but in trying that it only give 
> you about 160 Hz shift.

YES - you CAN choose LOW or HIGH tones!  Go into the menu, Exit/Set
(hold)|Others - Find RTTY Mark Frequency - As you turn the main dial,
you can set MARK to 1275, 1615, or 2125, and the RTTY shift width can be
set to 170, 200, or 425.

> If the RTTY FILTER button is on, there are no options to 
> select different filters.  That is fixed, apparently as part 
> of the decoder circuitry.  

If you HOLD the RTTY filter button in, you get a screen where you can
choose filter widths of 1000, 500, 350,300, or 250 Hz.

Helpful, or did I miss the point?  73