ID-4001 parts

[Dave Wood]

Fellow Heathites, I am restoring a ID-4001 weather station that was struck
by lightning and need to locate a source for the 417-919 photodiodes used in
the mast unit.  These are actually TIL-78's and I can't find a suitable
replacement.
Mouser was unable to help.  Someone with a real old ECG book may be able to
find a sub.  Of course I'll entertain buying a mast unit that may be surplus
to someone's needs, or maybe an entire 4001 basket case unit.  Thanks in
advance.
73  Dave

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