[RTTY] Lets try again on the FT857 problem

[Joe Subich, W4TV]

> 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 at 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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>>
>
>