vxling

i cant get a stable 3d fixed too, for pluto SDR i replaced the crystal with a 0.5ppm model: DSB321SDN 40M 40.000MHZ 3225 TCXO XTW40000PBA, I don’t know why. Receiver...

I got 3d fix with ublox now, but the iphone can’t locate

Try GPSDO

I checked with UBlox, it received signals but the data invalid.

Have you replaced the TXCO on Pluto?

any update?

I cant get a stable 3d fixed with static mode. for pluto SDR i replaced the crystal with a 0.5ppm model: DSB321SDN 40M 40.000MHZ 3225 TCXO XTW40000PBA. Receiver is U-Blox...

Thank you very much for your information sharing. Now the reason is clearly because of the accuracy of the oscillator, maybe use an external vctxco or ocxo just like https://www.mictronics.de/posts/ADLAM-Pluto-OCXO-Mod/,...

> That means you locked the frequency with an external clock source. Then signal quality improved and worked with the receiver devices. I will try to do that. Thank you.

Any update?