This mail I sent today to Serge. If I got his answer I will post it here...
please help the community with your information.
I got my QO-100 down converter on aug 7th.
There is a fault with the GND connections on the mmic
I found a hint in the AMSAT forum.
For you there was no information from you.
The OM who got the last transverter from the old lot in July
there was not this fault.
So I have the following questions:
1. Can you provide us with an official statement from you how many
PCBS in which time frame of delivery are effected.
I think you know how many PCBs you ordered.
2. Can you provide us with some test parameters to check, that after
the correction the transverter is ok.
looking forward getting your response very soon.
Then I will post your information in the AMSAT-DL forum.
73 and best regards Heiner..DD0KP