[Elecraft] K3 w/KIO3B has confusing RTTY transmit behavior

[Ed Pflueger]

Also make sure your sound cards are set to USB Codecs in the software.  Sometimes windows has played games with me and went back to the PC's default cards.

Ed.. AB4IQ

-----Original Message-----
From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bob McGraw K4TAX
Sent: Sunday, March 15, 2020 12:30 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 w/KIO3B has confusing RTTY transmit behavior

In MMTTY, check on the drop down menu under OPTIONS, then at the bottom of the list,  select SETUP menu, then TX pane.   Be sure the Digital Output is about mid scale.   Also, make sure the computer SPKR level is about 30 to 50% .

On the K3:   From the MENU the MIC SEL should show LINE IN.  The DATA MD should be set for AFSK A and 45 BPS.  The PITCH  value should be 2125 - 170.    The setting for LINE gain {use the MIC control} should be about 30.

This works for my configuration when running MMTTY.

   73

Bob, K4TAX

On 3/15/2020 12:14 PM, Joe N9OK wrote:
> Can't figure out how to reply to your post Rich in your thread.
> Audio Mark and Shift in MMTTY are identical to the Pitch control 
> settings in my K3.
> MAIN:AFSK TX is set to Filter On. This makes no difference for my 
> transmit power, however.
>
> 73, Joe N9OK
>
>
> On Sun, Mar 15, 2020 at 12:06 PM Joe N9OK <n9ok at myjdk.com> wrote:
>
>> Line In is selected, I should have included that in my original posting.
>> 73, Joe N9OK
>>
>>
>> On Sun, Mar 15, 2020 at 11:42 AM Joe N9OK <n9ok at myjdk.com> wrote:
>>
>>> Hi, I've recently upgraded my K3 with numerous upgrades including a 
>>> KIO3B board. I've successfully configured most of what I need but 
>>> RTTY has been a problem.
>>>
>>> What I see is that I am able to transmit power in RTTY mode if my K3 
>>> is set into *DATA A* mode. If I set my K3 to *AFSK A* mode, the 
>>> radio has the appearance of transmitting in RTTY mode but there is 
>>> no power. IE, TX illuminates, the ACL meter moves. But Monitor is 
>>> silent and there is no RF power. MIC gain is set the same for both 
>>> modes. VOX is set for both (not PTT).
>>>
>>> The problem first showed up in DXLAB WinWarbler. However, I've 
>>> confirmed the exact same problem occurs when I am running a 
>>> stand-alone MMTTY executable.
>>>
>>> I realize that I could use an external FSK interface. But I"m 
>>> looking for a simple setup, and  the documentation I've seen 
>>> indicates that I should be able to obtain output power using *AFSK A* mode.
>>>
>>> It appears to me that there is an audio routing issue in my K3. 
>>> However, that seems unlikely, as others would have reported the 
>>> issue and it would have been corrected. What I'm hoping is that 
>>> there is a simple setup issue that someone can direct me towards.
>>>
>>> Any ideas would be extremely appreciated.
>>>
>>> 73, Joe N9OK
>>>
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