[Boatanchors] Mailing Crystal Microphone Elements

[Ian Wilson]

Interesting. I received three ICs from Hong Kong a few months ago. The ICs
were clearly new and in their original sealed packing material. However, the two
that I tried worked only *partially*, and in different ways!. I have
never seen ICs fail
like this before. My theory is X-ray exposure.

The seller was good enough to replace the two that I tried. I haven't
had time to
check them yet. He marked the envelope "X-ray sensitive"; maybe it will have
helped...

73, ian K3IMW