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from Tim P (UK)
Fixing-up a type 132 - found a broken diode in the amplifier section.
Manual says DR746 Germanium. It is part# 152-007 (old numbering),
and I think it is a General Instruments part, although I cannot find it
in their catalog, or in the Tek parts lists. It is one of a pair D465 / 466
on the schematic. Is it just a generic ? (I will change them both because
of forward voltage drop) Any ideas as to what these are ? Sub-miniature
glass with 7-4-6 colour stripes.
many thanks
Tim

See page 160 of this document:

Got it, Kurt; many thanks. I have some OA91 'cat's whisker' diodes which
should do the job.
I don't know whether matching the Forward Voltage drop is necessary but I
will anyway.
Tim

It's good to known that several of these common design parts catalogs and several "reverse" parts lists (RPR) are available at Tekwiki.
But Tim "you searched with your nose" (we say in NL) in the Tek parts list (your first mail, tek_xref_free I suppose). Have a look at page 12-11, same info as in the pdf below.

Albert

I have some sets of matched germanium diodes [sets of 4] if you can not find a matched pair.
Not sure of ratings have not had a need to use them. but if you need I can send.
Garth.