[RTTY] MMTTY difficulties

[Joe Subich, W4TV]

> I'm not using a USB to serial port adapter.

I did not say you were ... I said that your system acted like it was.
You could have a very large buffer defined in your system configuration
so use the feature in MMTTY that is designed to compensate for a large
buffer.  It just happens to be labeled "USB Port".

73,

    ... Joe, W4TV


On 2/9/2013 10:59 AM, ham at n0sq.us wrote:
> I'm not using a USB to serial port adapter. I'm using a real/legacy serial port.
>
> Joe Subich, W4TV <lists at subich.com> wrote ..
>>
>>>> Yes. With the diddles turned off I can send traffic to the test
>>>> radio OK. But with the diddles turned on no traffic can be sent.
>>>> Also, when I try to send traffic with a macro only part of the text
>>>> gets sent before the radio dekeys.
>>
>> This acts like the USB port is really a USB to serial adapter.
>> Select Option | Setup MMTTY | MISC tab ... in the box labeled
>> "Tx Port" click the "USB Port" button.  Select "C: Limiting Speed"
>> in the "Processing method" box and click "OK.
>>
>> 73,
>>
>>      ... Joe, W4TV
>>
>>
>> On 2/8/2013 10:04 PM, ham at n0sq.us wrote:
>>> Kok Chen <chen at mac.com> wrote ..
>>>>
>>>> On Feb 8, 2013, at 3:51 PM, ham at n0sq.us wrote:
>>>>
>>>>> A real motherboard serial port - not USB
>>>>
>>>> So you are probably transmitting in FSK.
>>>>
>>>> Did you check the baud rate of your UART and make sure it can be set to 45.45
>> baud?
>>>
>>> Yes.
>>>
>>>> Wrong baud rates usually result in some gibberish print, but you said there
>> is
>>>> no print at all, correct?
>>>
>>> Correct.
>>>
>>>> A reversed RTTY sounds different from correct RTTY; wrong baud rate will also
>> sound
>>>> distinctly different.  Listen to a real life signal off the air and make sure
>> the
>>>> KAM prints properly, and listen again to the signal from your own transmitter
>> --
>>>> do they sound pretty much the same?
>>>
>>> Kam is working fine.
>>>
>>>> When you turn diddles off,  does the receiver hear a single constant tone?
>>>
>>> Yes. But, I did have to go into the TS2000 menu and invert the tones.
>>>
>>>> With the diddles turned off, do you hear an active RTTY tone pair when you start
>>>> typing?
>>>
>>> Yes. With the diddles turned off I can send traffic to the test radio OK. But
>> with the diddles turned on no traffic can be sent. Also, when I try to send traffic
>> with a macro only part of the text gets sent before the radio dekeys.
>>>
>>>> Testing with diddles turned off might at least confirm that your typing is getting
>>>> through to the UART.
>>>>
>>>> 73
>>>> Chen, W7AY
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