6700/RTTY/HRD DM780 Transmission does not line up with tuning lines

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  • Updated 2 years ago
I'm in a round room looking for a corner.

I have my 6700 communicating with HRD and DM780.  I have my tones/marks set as follows:

SDR/DSP: 2125/170
DM780: 2125/170

However, when I transmit the signals appear to be 700 hz give or take higher in frequency than the tuning lines per the SDR display.  If I adjust the DM780 tones up say 2170/170 things start lining up.

Should the tones/marks line up if both programs are setup with the same tones/marks?

What I am I missing?

Rich - N5ZC
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Rich - N5ZC

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Posted 2 years ago

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Duane, AC5AA

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OK, this is probably completely off-base, but is your CW offset set to 700 Hz also? If so, there *may* be some correlation.
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Alex - DH2ID, Elmer

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Set your center frequency marker to 2210 like this:

Then press the C button:

and it will center on your RTTY lines.

You'll also find info about RTTY here:
https://community.flexradio.com/flexradio/topics/setting-up-ham-radio-deluxe-with-smartsdr-tutorial

Alex - DH2ID
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Rich - N5ZC

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Thanks for the help Alex.

I was able to change the center mark using the arrows on either side of the center mark.

Which version of DM780 are you using.  I could not find where to enable the center frequency marker.

I'm still a bit curious why we need change the center mark in order to get the transmission lined up with the tuning lines.

Rich - N5ZC
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Rich - N5ZC

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Alex,

Never mind found it, it was under the waterfall tab.

Rich - N5ZC
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Alex - DH2ID, Elmer

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Yah! These tabs are sometimes difficult to find :-)
Good luck with RTTY, Alex - DH2ID