I am restoring a Kenwood TS-930S. It took what appears to have
been a near lighning strike. The mains fuse and a regulator were
blown. At the coax input to the unit there was a blown diode -- a Diac
I believe. It appears to be a protection diode and is connected
between the coax input and ground. The Diac was shorted and the
result was very low receiver sensitivity. After removing
it, the receiver worked fine. On the schematic it is listed as D67 and
the listing shows it (somewhat blurred) as D5A-44??. Between the
parts list and the schematic I am unable to
tell just what it is. Does anyone know of a good protection
diode that I can use as a substitute?

The unit is now working fine and cleaned up beautifully I just
want to replace the darned Diac to complete the restoration.

Thanks in advance for any assistance.

Irv VE6BP