The more I am looking into this the more I think it should be a
relatively simple process using Writelog. I should be able to route my
received audio to my computer sound card's stereo output lines. One
channel can feed internal MMTTY and the other channel can feed the
external DXP38.
I can have my primary Writelog RTTY decode window service MMTTY and then
open open a second cloned receive-only window servicing the DPX38. I
think I was trying to make it more difficult than it needed to be (an
opinion I very well might change once I reach the implementation stage! :)
I would be curious if some of the experienced multi-decoders could let
me know if I am on the right track. I am really looking forward to
driving three decoders off my radio for the WPX RTTY contest: two
software and one hardware.
Dick
--
Dick Flanagan K7VC
dick@k7vc.com
On 1/31/2012 9:15 PM, Dick Flanagan wrote:
> Hi, Jerry.
>
> I, too, have run multiple instances of MMTTY, but I'm curious how to run
> MMTTY simultaneously with a hardware decoder like the DXP38 from the
> same radio....
>
> Dick
> --
> Dick Flanagan K7VC
> dick@k7vc.com
>
> On 1/31/2012 8:58 PM, Jerry Flanders wrote:
>> As an experiment, I once ran six instances of MMTTY all from the same
>> audio stream with several different profiles. Each instance needed
>> about 2% CPU utilization on a 2ghz sempron machine, IIRC. My report
>> on this could probably be googled up. Pretty easy to set this up -
>> just click on the MMTTY icon several times and change profiles and
>> parameters on each instance as needed. I was receiving only.
>>
>> I have run different demods in this way also - e.g., FLDIGI with MMTTY.
>>
>> I routinely run two instances of MMTTY, using different profiles.
>>
>> Jerry W4UK
>>
>> At 11:34 PM 1/31/2012, Dick Flanagan wrote:
>>> I know some folks run multiple RTTY decoders, with one of them often
>>> being MMTTY and the other a DXP38. Is it possible to run these two
>>> decoders with one radio or is SO2R necessary?
>>>
>>> Dick
>>> --
>>> Dick Flanagan K7VC
>>> dick@k7vc.com
>>>
>>> On 1/31/2012 8:15 PM, Joe Subich, W4TV wrote:
>>>>
>>>>
>>>>> The problem is the DIN jack - the FT857 data in/out aren't the same
>>>>> as audio in/out to the DXP38. Data Out from the DIN plug is not
>>>>> sending audio that the DXP38 can decode.
>>>>
>>>> Based on what you wrote below, you have DATA IN and DATA OUT reversed
>>>> (and you are using FM/discriminator audio instead of product detector
>>>> audio). I know the information I've given works with any sound card
>>>> as that's what is used in all of the cables for microHAM products.
>>>>
>>>> It also works with any of the other "industry standard" miniDIN6
>>>> "DATA" jacks - in Icom IC-703, IC-706mkIIg, IC-7000, IC-746Pro, Kenwood
>>>> TS-480, Yaesu FT-8x7, 450, 950,
>>>>
>>>>> Joe, I just looked at your pinouts, and it doesn't match the diagram
>>>>> on page33 or the manual.
>>>>
>>>> Page 33 of the manual does not give pin numbers - I based my numbers
>>>> from the identification of the upper right pin (Data Out) as "pin 5"
>>>> in the diagram on page 18. However, if one uses the "standard" pin
>>>> assignments used by other manufacturers the pin clockwise of the
>>>> keyway (identified as pin 1 on page 18) is "pin 5". In that case the
>>>> proper connections are
>>>>
>>>> Pin 1 - audio from the sound card to the transceiver
>>>> Pin 2 - Ground/audio return
>>>> pin 3 - PTT
>>>> Pin 4 - discriminator out or FSK In (depending on model)
>>>> Pin 5 - audio from the radio to the sound card
>>>> pin 6 - squelch
>>>>
>>>> "Industry standard" numbering places the keyway *down* and numbers
>>>> left to right top row to bottom row. The "standard" pin numbers
>>>> are shown in the FT-450 and FT-950 manuals but the FT-817/857/897
>>>> manuals *all* lack *any* pin numbers!
>>>>
>>>> 73,
>>>>
>>>> ... Joe, W4TV
>>>>
>>>>
>>>> On 1/31/2012 10:29 PM, Nelson Moyer wrote:
>>>>> Joe,
>>>>>
>>>>> On a hunch, I connected the speaker out on the FT857 to the AF In on the
>>>>> DXP38. I can decode RTTY, but the PTT and AF In through the data
>>> jack on the
>>>>> FT857 won't key the radio on transmit. The problem is the DIN jack - the
>>>>> FT857 data in/out aren't the same as audio in/out to the DXP38. Data Out
>>>>> from the DIN plug is not sending audio that the DXP38 can
>>> decode. I think I
>>>>> can solve the problem by connecting the AF Out and PTT from the
>>> DXP38 to the
>>>>> appropriate mic jack pins of the FT857. The problem is that the FT857 uses
>>>>> RJ45 mic connectors, so I have to make up a cable with RF45 on one end and
>>>>> two RCA plugs on the other end.
>>>>>
>>>>> I don't know why the Data jack doesn't work with the DXP38 on RTTY, but is
>>>>> sure doesn't provide usable audio to the DXP38. I was hoping somebody had
>>>>> figured out how to configure RTTY on the FT857 using the DIN plug from the
>>>>> Data jack.
>>>>>
>>>>> I was trying to avoid using sound card RTTY for now, since I'm
>>> more familiar
>>>>> with the DXP38 and it's software. I hate to jump into pileups using
>>>>> unfamiliar hardware and software.
>>>>>
>>>>> I guess I really don't need another RTTY Q with HK0NA, but I was doing so
>>>>> well on the leader board until the K3 failed, that I hated to give it up.
>>>>>
>>>>> If all else fails, I have a RigBlaster Plus that I can hook up to the
>>>>> desktop. I've been using it on PSK31 with my laptop.
>>>>>
>>>>> Nelson, KU0A
>>>>>
>>>>> -----Original Message-----
>>>>> From: Joe Subich, W4TV [mailto:lists@subich.com]
>>>>> Sent: Tuesday, January 31, 2012 9:00 PM
>>>>> To: Nelson Moyer; RTTY
>>>>> Subject: Re: [RTTY] Lets try again on the FT857 problem
>>>>>
>>>>>
>>>>> Try,
>>>>>
>>>>> pin 1 Data IN to TX Audio ("line out") on your sound card
>>>>> Pin 2 ground to ground/chassis/audio return on your interface and SC.
>>>>> Pin 3 PTT to PTT output on your interface
>>>>> Pin 4 data out (9600 bps/discriminator audio for FM) - not used
>>>>> Pin 5 Data Out (1200) to RX Audio ("line in") on your sound card
>>>>> Pin 6 Squelch - not used
>>>>>
>>>>> Labels are from the perspective of the FT-8x7
>>>>>
>>>>> Pin 5 is recommended for audio recording (would work well with a
>>>>> sound card or TNC) on pg 18 of the manual.
>>>>>
>>>>>
>>>>> 73,
>>>>>
>>>>> ... Joe, W4TV
>>>>>
>>>>>
>>>>> On 1/31/2012 8:42 PM, Nelson Moyer wrote:
>>>>>> Group,
>>>>>>
>>>>>>
>>>>>>
>>>>>> I made up a new DIN data cable for the FT857 with the following
>>>>> connections:
>>>>>>
>>>>>>
>>>>>>
>>>>>> Pin 1 - Data Out - 1200 baud - Green - Not used
>>>>>>
>>>>>> Pin 2 - PTT - PTT - Orange - To PTT input on DXP38
>>>>>>
>>>>>> Pin 3 - Data In - Brown - To AF Out input on DXP38
>>>>>>
>>>>>> Pin 4 - GND - Black - To ground lug on DXP38
>>>>>>
>>>>>> Pin 5 - Data Out - 9600 baud - Red - To AF In on DXP38
>>>>>>
>>>>>> Pin 6 - SQL - Yellow - Not used
>>>>>>
>>>>>>
>>>>>>
>>>>>> Serial Port - COM1
>>>>>>
>>>>>>
>>>>>>
>>>>>> 9600 baud - 8 data bits - no parity - 1 stop bit - Hardware flow control
>>>>>> (per HAL tech support)
>>>>>>
>>>>>>
>>>>>>
>>>>>> FT857 menu settings:
>>>>>>
>>>>>> RTTY-L
>>>>>>
>>>>>> +170
>>>>>>
>>>>>>
>>>>>>
>>>>>> Problem:
>>>>>>
>>>>>> The serial port recognizes the modem, DXPWin 3.0 opens, configured for
>>>>>> baudot RTTY, FT857 set to Digital and tuned to RTTY signal, NO AUDIO
>>>>>> detected by DXP38. Nothing, not even band noise.
>>>>>>
>>>>>>
>>>>>>
>>>>>> The DXP38 was working just fine with my K3 until the 100 watt PA failed
>>>>>> calling HK0NA on 10 meters. I cannot figure out why I have no audio from
>>>>> the
>>>>>> FT857 to the DXP38 when all the connections are correct. Are there some
>>>>>> obscure menu settings to enable the data jack on the FT857? I can't find
>>>>> any
>>>>>> other menu settings that would affect RTTY.
>>>>>>
>>>>>>
>>>>>>
>>>>>> Nelson, KU0A
>>>>>>
>>>>>>
>>>>>>
>>>>>> PS
>>>>>>
>>>>>>
>>>>>>
>>>>>> The K3 went back to Elecraft today, and I'm stuck with the FT857 until it
>>>>>> comes back.
>>>>>>
>>>>>>
>>>>>>
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>>>>>>
>>>>>
>>>>>
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