[RTTY] FT2000 & AFSK

[Joe Subich, W4TV]

 > It's as if the audio on the packet jack is turned off.  We have also
 > increased the level in the menu settings of the FT2K.  Still no audio.

Have you checked "dAtA DT OUT" to confirm that "Main" is selected?
If Sub is selected and the subreceiver turned off, there will be no
output.

Also confirm your "dAtA OUT LVL" settings.

An alternative to fooling with receive audio from the Packet jack
is to use a standard 3.5mm to 3.5mm *stereo* cable between the
FT-2000 "AF OUT" jack and SPKR jack on the Signalink USB.  If you
do that, remove the speaker jumper on the header in Signalink
(see pg. 9/10 of the Signalink manual).

73,

    ... Joe, W4TV

On 1/6/2011 8:26 AM, Anthony J. Cioffi (N2KI) wrote:
> Chen,
>
> The only menu item I see other than the packet display is packet shift.
> Each menu has parameters that range -3000 to +3000 hZ.  There are no menu
> settings indicating packet tone choice like the 1000MP (which I use).  It is
> my understanding that PKT/LSB is to be active (like the 1KMP) if using the
> packet jack for AFSK.
>
> Here is the very strange situation.
>
> When selecting the packet button to enable PKT/LSB (like the 1KMP), we lose
> all audio to MMTTY, despite the RX level on the SignaLink at maximum and the
> OS (Vista) software settings also set at max.  This would be using the CODEC
> as the sound card option which is the SignaLink.  MMTTY is selected to use
> the CODEC for Receive and Transmit.
> It's as if the audio on the packet jack is turned off.  We have also
> increased the level in the menu settings of the FT2K.  Still no audio.
>
> We can transmit mark and space tones fine.  It just seems to be a problem
> with the audio level coming out of the radio on pin-4 of the packet jack
> going to the SignaLink when we have PKT/LSB active.
> If we select just LSB, the audio level is fine but the pass band is not
> centered on the waterfall. Adjusting the shift on the front panel does not
> bring it to center either.
>
> We are at an impasse.	
>
>
> Anthony - N2KI
>   www.n2ki.com
>
> -----Original Message-----
> From: Kok Chen [mailto:chen at mac.com]
> Sent: Thursday, January 06, 2011 12:07 AM
> To: mmoran1027 at gmail.com
> Cc: Anthony J. Cioffi
> Subject: Re: [RTTY] FT2000&  AFSK
>
> Hi Mike and Anthony,
>
> I don't know about the FT-2000, but with the FT-1000MP, there is a Menu Item
> called "Packet Tones."  You can choose between one of 4 tone pairs.  The
> tone pairs listed are 200 Hz shift tone pairs, but should be good enough for
> the 170 Hz used by RTTY (e.g., the 2110/2310 Hz pair for Packet has the same
> center as 2125/2295 Hz for RTTY).
>
> You will need to choose a tone pair that matches the software.  For example,
> choose 2210/2310 packet pair if your software uses 2125 Hz for Mark (in LSB,
> Mark audio tone is the lower of the two tones of the tone pair).
>
> There is also a menu item in the FT-1000MP to set whether you want the VFO
> dial to match a Packet cluster spot (i.e., make the VFO readout show the
> RTTY Mark frequency).  If you use LSB and the 2125/2295 Hz RTTY tone pair,
> set the value to -(minus) 2125 Hz.
>
> So, take a look in your manual for something that looks like the two menus
> above.  The first is critical if you want to use narrow crystal filters but
> the second is not critical (unless you operate near the 14100 kHz beacons,
> HI HI).
>
> Vy 73
> Chen, W7AY
>
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