# No transmit with smasung tablet, aprsdroid, digirig, FT-818

**URL:** https://forum.digirig.net/t/no-transmit-with-smasung-tablet-aprsdroid-digirig-ft-818/4567
**Category:** Uncategorized
**Tags:** os-android, yaesu-ft-818, troubleshoot-ptt
**Created:** [October 6, 2024, 8:04pm UTC](https://forum.digirig.net/t/no-transmit-with-smasung-tablet-aprsdroid-digirig-ft-818/4567 "2024-10-06T20:04:20Z")
**Posts on this page:** 1
**Showing post:** 2

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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: [October 7, 2024, 2:26am UTC](https://forum.digirig.net/t/no-transmit-with-smasung-tablet-aprsdroid-digirig-ft-818/4567/2 "2024-10-07T02:26:58Z")

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You mentioned switching USB cables so I’m assuming you are using Digirig Mobile.  
The PTT options for this model is via serial CAT command (wouldn’t expect that supported in many mobile apps), PTT by RTS (more likely, but still not widely supported in mobile apps).

As far as PTT by RTS is involved in APRSdroid, please check out this discussion:

> [@Let's add digirig to aprsdroid](https://forum.digirig.net/t/lets-add-digirig-to-aprsdroid/1230):
>
> I’m a programmer by trade and hobby. I’m sure there are other people here with similar skills and interests. I’ve taken a look at the Aprsdroid code and it doesn’t look so complicated. My problem is that I don’t know the android libraries (or scala but that’s pretty easy). So investing the time with little or no idea of the right direction doesn’t seem like a winning strategy. If there’s someone or someones here who would like to collaborate on adding digirig functionally to Aprsdroid I think …

Digirig Lite is a better choice for the mobile apps with the range of PTT options optimized for mobile apps.

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