On Thu, Mar 13, 2025 at 11:44?AM chuck adams via <chuck.adams.phd=[email protected]> wrote:
One more thingy.
I forgot to mention.? If you will note, the K7QO paper had one HC-49S
(the short
crystal).? In a current shopping spree I find that the HC-49U has
practically
disappeared from the face of the earth.
But that may be a good thing.? Note:? the HC-49S crystal in the paper
had the
highest Q rating!!
Figure 1 in Chucks paper shows a HC-49U carefully taken apart. Try to find
a photograph of a HC-49S.? I dare you.? Some take one apart and do a high
resolution photo.? Please.
