[1000mp] FSK RTTY using 1000mp Mark V

Fri, 4 Oct 2002 00:01:08 -0000

OK, useful information...

Next question. If you have no DIN plug inserted in the RTTY jack, and press
MOX, do you get a steady, undistorted carrier, with ALC at midscale, or do
you get something else? IOW, are your symptoms associated with the Mk V,
without any TNC or other RTTY source?

To answer your other question, for RTTY, I am aware only of settings for
high/low tones and normal/reverse.

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Bryan Preas
> Sent: Thursday, October 03, 2002 17:54
> To: [email protected]
> Cc: [email protected]
> Subject: [1000mp] FSK RTTY using 1000mp Mark V
>
>
> Thanks for the responses, but no one has the answer yet.  Here
> is the additional information that people have requested.
>
> Some people have mentioned AFSK vs FSK.   I have the AFSK
> signals connected to the packet jack.   When I press the PKT button on the
> front panel and send RTTY through the TNC, I get perfect AFSK
> transmission.
> The MIC gain controls the ALC as advertised. (I set the MIC gain so the
> ALC indication is barely visible on the meter.)
>
> This is an FSK problem. I have the FSK signals connected to the
> RTTY jack. When I press the RTTY button on the front panel and send
> RTTY through the TNC, the ALC goes off scale and the RF signal
> is distorted.
>
> This does not appear to be a TNC problem.  I get the same behavior
> using MMTTY, a HAL DXP38, and a PK 232.  I even wired a special
> connector with push buttons to short the PTT and shift (FSK Tx) lines to
> ground when the buttons are pressed. I see the same behavior that I
> have described when I send FSK with my thumbs.
>
> People have asked about the TNC settings.  I'm fairly certain that these
> settings are correct.  I can communicate  using RTTY FSK, but the
> recipients complain the distorted signal.  I am unaware of any setting
> on the radio for the FSK mode. If there are any, please let me know.
>
> I get the same behavior when I am in the RTTY mode (RTTY button on the
> front panel engaged) and I press the MOX button.
>
> Thanks again for your help.
>
> Bryan
> AC6JT
>
> Original message:
> To: [email protected]
> From: Bryan Preas <[email protected]>
> Subject: FSK RTTY using 1000mp Mark V
> Cc: [email protected]
> Mime-Version: 1.0
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> I'm trying to use FSK RTTY on my FT-1000 Mark V.  Everything
> seems to work except when I assert PTT, the ALC meter goes
> off scale and the output is distorted.
>
> I can't find any control for the ALC in the RTTY FSK mode.  I'm
> missing something, or my radio is broken.
>
> Can someone help?
>
> Thanks, Bryan
> AC6JT
>
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