GPS SIM Fault. MAX2839 chip and Chinese HackRF_PortaPack H2+

[Sats301]

          Hello everybody! I am completely upset! 

Completely same situation, but with one little difference...

1. All actions with FW/CPLD manually flashing - not working.
2. Can't check situation with 1.6.0 and lower FW (screen not working, buttons can't help).
3. Can work only with 1.7.0 and other latest FW
4. I've bought 100 PCS of HackRF PortaPack H2+ for student education, and the part of education program - not available, because we cant discover lite spoofing...
5. .C8 folder generated by gps-sdr-sim pack.
6. SD cards no make sense.
7. But in HackRF with PC - is fine.

I am really not understand what I need to do. Just look on photos... Hacrf_info

Chipsets

GPS_Sim - completely bad!

HackRF mode - is ok

Friends could I ask you for a help? Because this situation is a really nervous...

Originally posted by @Sats301 in https://github.com/eried/portapack-mayhem/issues/1070#issuecomment-1648826316

[Sats301]

Please try with new v2 one I attached just above your last comment, after enabling it, try reboot and go into that menu and see if it shows 10mhz

Please wait a second

[Sats301]

Please try with new v2 one I attached just above your last comment, after enabling it, try reboot and go into that menu and see if it shows 10mhz

Yes, it change to 25, but still not working.

if I trying to force to external TCXO, reference source comes to 10.

[jLynx]

That's what we want, we want to enable force TCXO and it should be set to 10. Once it's on 10,does it work?

[jLynx]

Actually @Sats301 I think that build still wont work. Are you able to please message me on Discord, It may be easier to get this working for you (My username is .jlynx)

[FrankVoice]

I was also having a problem with this GPS Sim not working. I did look all over the internet for an easy fix after reading this post to try to switch to internal clock. Can anyone please point me in right direction to use internal clock instead of external? Also I noticed a sat showing up as 1575.420 and once time it was just 3 random letters but didn't get a screen shot. This was while I was watching which SATs Sim was uploading from Easter I believe it was.

Thank you

[jLynx]

@FrankVoice still trying to work on a nice fix that will work for everyone, so you will just have to sit tight or use @bernd-herzog firmware he posted above for the moment

[gullradriel]

So, is it fixed ?

[smallwaye]

I'm having same issue, firmware and tools are most updated however gps sim on the pp doesn't work, it does work well in hack-rf mode with a computer, so how to get this fixed? tried enable or disable external txco but make no differences, i also tried to create or delete the TXT file sample_rate=2600000 center_frequency=1575420000 but same thing, anyone can help would be greatly appreciated,