[RTTY] Contesting w/ 2 Tone & MMTTY

[Joe Subich, W4TV]

 > Joe, tell me more about the "RXM_Switch command"

RXM_SWITCH (MMTMSG_SETSWITCH) is a programming interface in XMMT.ocx
that allows the calling application (e.g. logger) to read/set the
buttons on the MMTTY control panel.  It is documented in the XMMT.ocx
and in the MMT.ocx ("TNC Mode") programmer's material - I know it 
permits access to and control over AFC and NET however, the MMT.ocx
documentation also indicates it provides access to:

> b0-b1	Modem type		0-IIR, 1-FIR, 2-PLL
> 	b2	AFC
> 	b3	NET
> 	b4	ATC
> 	b5	BPF
> 	b6	LMS/Notch
> 	b7	SQ
> 	b8	Rev
> 	b9	UOS
> 	b10-b11	AFC shift algorithm
> 	b12	Integrator		0-FIR, 1-IIR
> 	b13	LMS/Notch		0-LMS, 1-Notch
> 	b14	0-single notch, 1-two notches
> 	b16	Word warp
> 	b17-b18	Way to send 0-Char, 1-Word, 2-Line

> It seems that 60 Hz off frequency when I am running in AFSK puts me
> into the guy next to me. Not nice.

60 Hz is only 1/3 of the shift - you can't possible work that close to
another station.

73,

    ... Joe, W4TV


On 4/8/2013 7:57 PM, Jerry Pixton wrote:
> And those of us with the nice Flex radios are stuck in AFSK. Since there
> is an interface to control NET (used by N1MM), perhaps Writelog's
> Xmmt.ocx can exploit that. Although I have never used it, does the "This
> is the Run Station" on the Radio menu inform Writelog of what the
> operator intends to do?
>
> Joe, tell me more about the "RXM_Switch command"
>
> It seems that 60 Hz off frequency when I am running in AFSK puts me into
> the guy next to me. Not nice.
>
> Jerry, W6IHG
>
> On 4/8/2013 10:18 AM, Ed Muns wrote:
>> Joe W4TV wrote:
>>> It doesn't matter at all if one is using FSK instead of AFSK.
>>
>> Net only applies to AFSK and I don't want the transmit frequency
>> moving +/-
>> 60 Hz when AFSK is used and Net cannot be turned off.
>>
>> Ed W0YK
>>
>>
>>
>>> -----Original Message-----
>>> From: RTTY [mailto:rtty-bounces at contesting.com] On Behalf Of
>>> Joe Subich, W4TV
>>> Sent: Sunday, April 07, 2013 10:05 PM
>>> To: rtty at contesting.com
>>> Subject: Re: [RTTY] Contesting w/ 2 Tone & MMTTY
>>>
>>>
>>>> But, not everyone uses F1/F11 for CQ. I use F2, for example. I'd
>>>> prefer the logger not force a specific Fn key to be CQ.
>>>
>>> I doubt that would be a serious problem ... even if a %x
>>> command were developed to turn off Net and allow the user to
>>> decide when it should be disabled.
>>>
>>>> Net ON is an issue for me because I don't want my Run
>>> frequency moving
>>>> around +/- 60 Hz. OTOH, if one zero-beats the desired station, it
>>>> won't matter.
>>>
>>> It doesn't matter at all if one is using FSK instead of AFSK.
>>>   I'm still of the belief that FSK should be preferred in any
>>> case as I've heard too many simply atrocious AFSK signals.
>>>
>>> 73,
>>>
>>>      ... Joe, W4TV
>>>
>>>
>>> On 4/7/2013 10:54 PM, Ed Muns wrote:
>>>> Joe W4TV wrote:
>>>>> On the other hand, G3YYD has previously suggested that
>>> software using
>>>>> 2Tone use the RXM_Switch command to turn off Net when calling CQ
>>>>> (F1/F11 in Writelog).  That could easily be complemented
>>> by turning
>>>>> Net ON if the transmit frequency changes by more than 500
>>> Hz or 1KHz.
>>>>> That would result in Net OFF when running (call CQ, Net
>>> goes off) and
>>>>> Net ON when in S&P or jumping frequency to grab a multiplier.
>>>>
>>>> Yes, if/when this function is implemented in WriteLog.  But, not
>>>> everyone uses F1/F11 for CQ.  I use F2, for example.  I'd
>>> prefer the
>>>> logger not force a specific Fn key to be CQ.
>>>>
>>>>> In any case, Net ON/OFF is not a significant issue since
>>> 2Tone limits
>>>>> the AFC range to not more than about 50 or 60 Hz (depending on
>>>>> version) from the preset Mark (or Space).
>>>>
>>>> Net ON is an issue for me because I don't want my Run
>>> frequency moving
>>>> around +/- 60 Hz.  OTOH, if one zero-beats the desired station, it
>>>> won't matter.
>>>>
>>>>
>>>> Ed W0YK
>>>>
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