[DSP-10] 10MHz Crystal osc question

Lee Scott [email protected]
Thu, 21 Feb 2002 14:02:25 -0500


I have my DSP-10 up and running but have had to pad quite a bit on the 
10MHz crystal to get it to the right frequency.  As originally constructed, 
the DSP-10 was transmitting 10KHz high so I padded C109 first with a 5pf, 
then a 10pf cap.  I was still too high and I had to add a 27pf NPO disk cap 
from C110 to gnd before the low end of the C110 would tune the osc down low 
enough to bring it on freq.

Am wondering if the 10MHz crystal TAPR is kitting is the right one as I 
have had to pad a total of 37pf to pull the osc down.

Lee Scott - AA1YN