[RTTY] RTTY + FT920

Wed May 9 21:32:18 PDT 2012

Hi

Yes, I know microHAM works with MMTTY..I used microHAM MK since very first
days of release with my 4 MK units, I upgraded to several MKII boxes this
winter.

But thank you for support :) 
The PC and MKII unit works with MMTTY software on my Kenwood Radio's 100%,
so there is some issue with the signal to Yaesu 920 FSK port vs Cable I got
from microHAM last week.

I have tried to switch on/off the AFSK/FSK switch 20 times, adjustet NOR/REV
and digital output( min to max) in MMTTY and FSK settings profil A-B-C-D in
MMTTY.. What I can see of the received signal from the 920 is that is not
very solid CLEAN RTTY signal..looks to me a attunated signal quality
compared when I do a test transmit with kenwood's RTTY signal.

I will do some research "again" this afternoon when I am able to go at the
radio QTH, even I tried 2 hours with all kind of settings last weekend to
work ARI RTTY, I gave up trying to solve the find out why the signal didn't
came out properly  :p 

73s LA6FJA Rag

-----Original Message-----
From: rtty-bounces at contesting.com [mailto:rtty-bounces at contesting.com] On
Behalf Of Joe Subich, W4TV
Sent: Thursday, May 10, 2012 2:18 AM
To: RTTY
Subject: Re: [RTTY] RTTY + FT920

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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