External GPS RS232 receiver

[baltika_no_9]

Hello,

I buy this device: https://es.aliexpress.com/item/400102738...Title=true

The GPS is working great wheh connecting to VHF radio. But when I connect to the USB converter, I have no data in OpenPlotter.

I do a "tail -f /dev/ttyXXX" and there are some not-readable data. it look like is not well formated.

I try different baud rates, but nothing. Need I by other device?

Someone could help with this?

Best regards.

That device looks like it's TTL rather than "true" RS232. I have a feeling that's your issue.

Apart from having different operating voltage levels, the 0 and 1 are different between TTL (lower voltage =0) and RS232 (higher voltage =0).

You can buy RS232<>TTL level shifters but it's just another link in the chain. A USB to true RS232 cable like the one I use should work fine.