[RTTY] RTTY + FT920

[Joe Subich, W4TV]

Rag,

microKEYER II works perfectly with MMTTY.  There are thousands of MK,
MK II, DK, DK II and MK2R+ in use with MMTTY both stand alone and as
"plug-in" for other logging software every day.  No interface is going
to fix problems with your transceiver if the transceiver is not working
properly.

I suggest you make sure the transceiver is shifting properly and can
handle the necessary shift; WW3S has already documented issues of
improperly operation in his FT-920.  Make sure the AFSK/FSK switch is
not dirty, that none of the connectors between the DATA jack and the
CPU are dirty, that the pull-up on the CPU is working properly (47K
may be too weak), etc.

If you need it, MK and MKII provide a pull up on pin 10 of the DB37
which can be bridged to pin 29 (FSK Out) but the FT-920 does not
document the need for such an external pull-up.

Note: it is your responsibility to make sure your transceiver is
operating properly - not the responsibility of an interface builder
or the software developer.  Hardware and software can not be expected
to fix improperly operating equipment or add features that do not work
properly in the transceiver.

73,

    ... Joe Subich, W4TV
        microHAM America, LLC.
        http://www.microHAM-USA.com
        http://groups.yahoo.com/group/microHAM

        support at microham.com


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On 5/9/2012 6:33 PM, Stein-Roar Brobakken wrote:
> Hi
>
> Yes, I tried ALL option with my FT920 and MMTTY, Writelog w/MMTTY ....and
> used DATA LSB(FSK) and FSK switch to FSK...
>
> In AFSK it was ok, but there seems to be low modulation..
> I don't like the AFSK Scoop in Writelog...
> FSK with MMTTY plugin is ONLY option for me to operate RTTY! Since I purcaed
> the the new FT-920 cable from microham last week.... it seems waste of
> bucks...
>
> The radio diddles and I can see the high and low tones on my decode...but no
> chance to copy it even parameter 2125, 170hz, REV or NOR with FT-920... it
> can't be decoded...somehow.. I tried dual decoder in 2nd pc with one REV and
> one Normal..
>
> It can be something wrong with the output on the FT920 ??? like WW3S said:
> " I use a FT-920 with an original Microkeyer when in VP9....it works, but
> it's a bear to setup.....first off, transmit the whole alphabet, and see if
> you can copy any of the letters...if you can copy half of them,but not the
> other, good chance ther pullup resistor in the 920 went bad....I'm not sure
> about the MKII, but with my microkeyer, I had to open the cable up and short
> 2 pins together, that cured it, W4TV could probably tell you if the same
> thing with work with a MKII.....but try typing and transmitting the whole
> alphabet string, and see what gets decoded in the other rig....I think in my
> case, all the missing characters ended in a space, and that bad pullup
> resistor was causing trouble..."
>
>
>
>
>
>
> -----Original Message-----
> From: Joe Subich, W4TV [mailto:lists at subich.com]
> Sent: Wednesday, May 09, 2012 3:25 PM
> To: Stein-Roar Brobakken
> Cc: rtty at contesting.com
> Subject: Re: [RTTY] RTTY + FT920
>
>
> There is nothing difficult about using FSK with the FT-920 as long as you
> read and study the manual carefully.  Yaesu also released an Application
> Note "Expanded Digital Mode Operating Instructions" - AN97xx.  By searching
> Google for "Yaesu AN-97xx FT-920"  I found it
> here: http://www.kb2ljj.com/data/yaesu/ft-920.htm and here:
> http://www.radiomods.co.nz/yaesu/yaesuft920.html
>
> The key to using the FT-920 is understanding the difference between DATA LSB
> (FSK) and DATA USB (AFSK), setting the FSK/AFSK switch correctly on the rear
> panel and making the proper menu settings (e.g.
> FSK REV).
>
> 73,
>
>      ... Joe, W4TV
>
>
> On 5/9/2012 1:53 AM, Stein-Roar Brobakken wrote:
>> Hi
>>
>>
>> Is there anyone out which have used FT-920 with FSK RTTY?
>>
>> I got a FT920 in shack to test for RTTY.
>> I have tried to setup mine with a microHAM MKII..switched the radio to
>> FSK and standard settings..2125 , 170 and also tried with setup in MMTTY..
>> But I am not able to copy my sent RTTY at the other end...
>> I do see the two spaced tones, but it's not quality RTTY and not able
>> to decode it with another transceiver.. and I can either work any QSO
>> :(
>>
>> Any suggestions????
>>
>> 73s LA6FJA Rag
>>
>>
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