Wanted：Passive Hydrogen Maser

[dianzimi]

I'm looking to Passive Hydrogen Maser。
Is anyone here selling Hydrogen Maser?

Thanks
dianzimi

[GigaJoe]

as an option you may try to shoot down one of Galileo satellites (sorry , can't resist of ironic )

i think lifespan finite, even if someone may offer it , status really unknown ....

(a while ago someone sold an electronic scanning microscope in a basement,  i think it was 10K - gone in a week   )