On Thu, Dec 31, 2020 at 03:16 PM, Attilio wrote:
where can i find the 52.5 MHz crystal? It is hard to find!
Hi Attilio,
The 52.5 MHz crystal in the TR502 is Tek p/n 158-0098-00.
According to the Common Design Parts Catalog, this is a
+/- 0.0005%, 3rd overtone series crystal in a TO-5 case,
with a maximum series resistance of 40 Ohms.
I suppose you might be able to persuade someone who re-tuned
their TR502 to give you their original crystal (not me, though -- I am
quite happy with my 7L14/TR502/DC508 setup).
Otherwise, perhaps QuartSLab () may
be able to supply a new crystal based on the specifications listed above.
Happy new year,
dan
