# MMSSTV settings for PTT by RTS

**URL:** https://forum.digirig.net/t/mmsstv-settings-for-ptt-by-rts/1191
**Category:** Uncategorized
**Tags:** mode-sstv
**Created:** [February 27, 2023, 10:52pm UTC](https://forum.digirig.net/t/mmsstv-settings-for-ptt-by-rts/1191 "2023-02-27T22:52:59Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![K0TX](https://forum.digirig.net/user_avatar/forum.digirig.net/k0tx/32/3_2.png) [@K0TX](https://forum.digirig.net/u/K0TX)
#### Post date: [February 27, 2023, 10:52pm UTC](https://forum.digirig.net/t/mmsstv-settings-for-ptt-by-rts/1191/1 "2023-02-27T22:52:59Z")

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While using [MMSSTV software](https://hamsoft.ca/pages/mmsstv.php) here is what worked for triggering PTT by RTS. Obviously your Digirig’s COM port may be different number (COM4 here).

 ![image](https://forum.digirig.net/uploads/default/original/1X/c72efe8b7e622ab42dc06c2fc7a130955fa92dcf.png)

Don’t forget to adjust TOT setting (transmit timeout) on your radio if you stop sending halfway.

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### Author: ![Norbert](https://forum.digirig.net/letter_avatar_proxy/v4/letter/n/f6c823/32.png) [@Norbert](https://forum.digirig.net/u/Norbert)
#### Post date: [November 21, 2024, 4:46pm UTC](https://forum.digirig.net/t/mmsstv-settings-for-ptt-by-rts/1191/2 "2024-11-21T16:46:27Z")

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> [@K0TX](#):
>
> While using [MMSSTV software](https://hamsoft.ca/pages/mmsstv.php) here is what worked for triggering PTT by RTS. Obviously your Digirig’s COM port may be different number (COM4 here).

Hello Denis, FT4/FT8 with WJST-X runs great on the FT-757GXII with the GX16 Mic Cable for Digirig. But MMSSTV (1.13.3) doesn’t work for me. Receiving works, but sending doesn’t work. If I set the sound settings OUT to Digirig (USB Audio Device) there are no sounds. If I set it to default I hear the SSTV sound. I can’t get the window for “PTT by RTS” at all, I have another one and can’t set it to RTS anywhere. Do you have a tip for me? 73 de DD8BV, Norbert

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### Author: ![K0TX](https://forum.digirig.net/user_avatar/forum.digirig.net/k0tx/32/3_2.png) [@K0TX](https://forum.digirig.net/u/K0TX)
#### Post date: [November 21, 2024, 5:17pm UTC](https://forum.digirig.net/t/mmsstv-settings-for-ptt-by-rts/1191/3 "2024-11-21T17:17:01Z")

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I would look at the audio devices in the control panel.  
Did you reassign the defaults back to your computer’s internal speaker and mic?  
More on the subject of audio troubleshooting in this video:

[![](https://img.youtube.com/vi/wBFFI-31tU0/maxresdefault.jpg "Audio Settings and Troubleshooting") ](https://www.youtube.com/watch?v=wBFFI-31tU0)

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### Author: ![Norbert](https://forum.digirig.net/letter_avatar_proxy/v4/letter/n/f6c823/32.png) [@Norbert](https://forum.digirig.net/u/Norbert)
#### Post date: [November 24, 2024, 4:35pm UTC](https://forum.digirig.net/t/mmsstv-settings-for-ptt-by-rts/1191/4 "2024-11-24T16:35:39Z")

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Hello Denis, thank you very much for your answer. After I set everything up again step by step, it worked. Thank you for your effort. 73 de DD8BV