Cross posting from Nerdery since GPS use is outdoors:
Working through a repair on a Raven MBA-6 helix GPS antenna (water damage, since fixed through the component level) and need someone with actual RF test equipment to finish fault isolation. I've done what I can with a NanoVNA and continuity checks, but I think whatever's left needs a spectrum analyzer or signal generator to find. I am far beyond my skill set.
What's been done already:
Confirmed and replaced correct LNA (MACOM MAAM-12021)
Confirmed and replaced correct SAW filters (TOKO TDF2A-1575B-13 and -11)
Repaired the RF shield can
Clean continuity throughout, correct bias voltage present at the feed point
Still no signal output
If you've got a real RF bench setup and some experience with GNSS front ends, I'd like to pay for your time to look at this. Open to discussing rate.
This is partly toward learning to see where I missed, partly to have this available and partly right to repair. Also picked up a working MBA-6 and MBA-7 separately as a backup, so this isn't urgent/desperate, just want to see this particular repair through since I'm most of the way there.
Texas based, can ship anywhere in the US. Reply here or PM me
Working through a repair on a Raven MBA-6 helix GPS antenna (water damage, since fixed through the component level) and need someone with actual RF test equipment to finish fault isolation. I've done what I can with a NanoVNA and continuity checks, but I think whatever's left needs a spectrum analyzer or signal generator to find. I am far beyond my skill set.
What's been done already:
Confirmed and replaced correct LNA (MACOM MAAM-12021)
Confirmed and replaced correct SAW filters (TOKO TDF2A-1575B-13 and -11)
Repaired the RF shield can
Clean continuity throughout, correct bias voltage present at the feed point
Still no signal output
If you've got a real RF bench setup and some experience with GNSS front ends, I'd like to pay for your time to look at this. Open to discussing rate.
This is partly toward learning to see where I missed, partly to have this available and partly right to repair. Also picked up a working MBA-6 and MBA-7 separately as a backup, so this isn't urgent/desperate, just want to see this particular repair through since I'm most of the way there.
Texas based, can ship anywhere in the US. Reply here or PM me