[RTTY] Yaesu FT-920 setup - HELP!!

[Tom Homewood]

I had this problem with a Bux opto trying to operate the PTT on my FT1000MP.
I had to replace the opto with a transistor.

I am doing RTTY fsk and PTT with discrete transistors.

73, Tom, W1TO

----- Original Message ----- 
From: "John Fleming" <john at wa9als.com>
To: <wa4pgm at kinex.net>; <rtty at contesting.com>
Sent: Tuesday, July 13, 2004 3:36 PM
Subject: Re: [RTTY] Yaesu FT-920 setup - HELP!!


> Kyle, if you're using a BUXCOMM interface that utilizes a 4N25 or similar
> optoisolator, I'm not a bit surprised it won't key as expected.  Do
youself
> a favor - Make a plug for your rig's FSK ACC connector with a wire coming
> out for ground and FSK SHIFT.  With the rig in RTTY mode, put it in
transmit
> manually and then short the wires together intermittently and see if you
get
> the expected tone shifts.  If so, and I believe you will, then it proves
the
> 4N25 interface will not key the Yaesu.  It may appear to short using a
VOM,
> but it's actually not low enough to key the stubborn Yaesus.  If it
doesn't
> key manually, then there's some other problem with the rig itself.  Let us
> know what happens.  This has been documented somewhat by more than one of
us
> previously.  Maybe W7AY would care to comment?
>
> I was on vacation out of town last week and might have lost track of this
> thread - sorry if my post is redundant somehow.  73 - John, WA9ALS
>
> ----- Original Message ----- 
> From: <wa4pgm at kinex.net>
> To: <rtty at contesting.com>
> Sent: Tuesday, July 13, 2004 2:11 PM
> Subject: Re: [RTTY] Yaesu FT-920 setup - HELP!!
>
>
> > So far no luck getting the 920 working in FSK mode. I've checked my
> > Buxcomm interface with a ohm meter and it's showing a short when keyed,
> > when I unkey the short goes away. This leaves me to believe my interface
> > is good. Ed VP9GE has listened to my signal and it's only a carrier with
> > no shift.
> >
> > Switch on back of rig is set for FSK.
> >
> > Rig Menu is setup:
> > Mode - DATA/LSB
> > U42 - Hi2125L
> > U43 - Sft 170
> > U44 - RES
> >
> > I don't find any other menu setting that might help, perhaps I've
> > overlooked it.
> >
> > I tried different Volume/Recording Control settings so perhaps I've
> > screwed something up there? At this point I don't know which way is up
> > anymore. :)))
> >
> > Using MMTTY 1.65
> >
> > Doesn't look good at this point in hopes of operating NAQP, but I'll
keep
> > trying.
> >
> > THANKS EVERYONE!
> > 73,
> > Kyle
> >
> >
> > > Kyle,
> > >
> > > 1.  First, be sure that you are, in fact, supplying the FS keying
> > > information
> > > to the 920 before suspecting the rig.  If you have an ohm meter, put
it
> > > across the leads that you are connecting to the FSK jack on the 920.
> > > Depending on
> > > what your sending, the meter should either show a short on keying or
> show
> > > SOME fluctuation.  If you are not getting any indication that the FSK
> > > contacts
> > > are being shorted for the duration of the mark tone, then you will
have
> to
> > > correct that problem -- which would be from the output of your
computer
> or
> > > your
> > > Terminal Unit.
> > >
> > > 2.  If you are getting an indication with a meter that the contacts
are
> > > being
> > > supplied with a short when needed, then you need to be sure that you
> are,
> > > in
> > > fact, able to FSK the 920.  Make a contact on phone.  Tell the other
> > > operator
> > > that you will be sending a carrier and that when you touch a couple of
> > > wires
> > > together, the carrier frequency should shift slightly.  For this test,
> it
> > > would
> > > be best to set the 920's FSK to USB.  However, the other guy should be
> > > able
> > > to tune around and hear your carrier and detect a shift in it when you
> > > touch
> > > the wires together.   Then, go back to SSB and listen to what he tells
> > > you.
> > >
> > > If you are unable to shift the frequency in this way, that would
> indicate
> > > that you still do not have the 920 set up correctly, or, it isn't
> working
> > > right.
> > >
> > > 3.  If you don't have  a small VOM with you, get one at Radio Shack
and
> > > put
> > > it in your travel kit.  If you had one with you, you would be able to
> > > easily
> > > solve this problem.
> > >
> > > I'll be interested to see what you find.
> > >
> > > Good Luck!
> > >
> > > Mike
> > > W0YR/4
> > > _______________________________________________
> > > RTTY mailing list
> > > RTTY at contesting.com
> > > http://lists.contesting.com/mailman/listinfo/rtty
> > >
> >
> > _______________________________________________
> > RTTY mailing list
> > RTTY at contesting.com
> > http://lists.contesting.com/mailman/listinfo/rtty
>
> _______________________________________________
> RTTY mailing list
> RTTY at contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty