Malcolm,
I know about this add - I actually tried Alibaba for crystals, and there was this guy who offered me the very same OCXO (MOQ=5) as crystals for US$50 plus freight (another US$40) so I pulled out because I found this IC on RS, which is much more flexible approach IMO.
I am also waiting for programmer for AT89C2051, I will try to read back the processor and possibly disassemble the code.. which would be the best solution.
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