# Digirig Mobile PCB Rev 1.11 - RS232 CAT

**URL:** <https://forum.digirig.net/t/digirig-mobile-pcb-rev-1-11-rs232-cat/9478>\
**Category:** Uncategorized\
**Tags:** troubleshoot-serial\
**Created:** [August 24, 2025, 3:10pm UTC](https://forum.digirig.net/t/digirig-mobile-pcb-rev-1-11-rs232-cat/9478 "2025-08-24T15:10:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dwalk](https://forum.digirig.net/letter_avatar_proxy/v4/letter/d/a8b319/32.png) [@dwalk](https://forum.digirig.net/u/dwalk)\
**Post date:** [August 24, 2025, 3:10pm UTC](https://forum.digirig.net/t/digirig-mobile-pcb-rev-1-11-rs232-cat/9478/1 "2025-08-24T15:10:16Z")

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Everyone, I need a little guidance on helping a friend get his Digirig Mobile working with his FT-450D. I know this radio uses RS-232 CAT. I/m looking at the PCB, and I see 3 solder blobs on the RS-232 side. Is this board already configured for RS-232 CAT?

We are using the TS-480 cables to hook up to his FT-450D.

When we activate WSJT-X, we are not getting any audio from the rig. when we adjust the VFO on the rig, the frequency window on WSJTX adjusts to that frequency. Clicking on the FT8 tab, the rig does not adjust to the FT8 frequency such as on 20M 14.074.

I’m attaching a photo of the PCB. I haven’t been able to find any documentation on the PCB 1.11. Any help would be greatly appreciated.

 ![DigiRig PCB Rev 1.11](https://forum.digirig.net/uploads/default/original/2X/b/b51ae1505157f2229dbfcbc3a4b7872eccabac7c.jpeg)

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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:** [August 26, 2025, 5:50pm UTC](https://forum.digirig.net/t/digirig-mobile-pcb-rev-1-11-rs232-cat/9478/2 "2025-08-26T17:50:19Z")

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The pictured Digirig Mobile is in RS-232 configuration. You are good to go with interfacing of Yaesu FT-450D

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**Author:** ![dwalk](https://forum.digirig.net/letter_avatar_proxy/v4/letter/d/a8b319/32.png) [@dwalk](https://forum.digirig.net/u/dwalk)\
**Post date:** [August 26, 2025, 6:51pm UTC](https://forum.digirig.net/t/digirig-mobile-pcb-rev-1-11-rs232-cat/9478/3 "2025-08-26T18:51:42Z")

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I appreciate you getting back to me. Thank you.

73