I am having a problem with the 50 Mhz reference oscillator as it generates a frequency of 47.5 to 49.995 Mhz depending upon setting of R110. Q9 is dissipating excessive power and is hot to the touch
A9 collector bias is at 11.5 instead of the proper 11.0 and emitter bias is at -.65V. base is nominal at 0V I've checked the components to make sure that values have not shifted. Has anyone seen and fixed simiar behavior as this circuit has the earmarks of one of HP's trick circuits which depend a precise relationship between selected components in order to perform normally - Thanks in advance Scott N1JIN PS if someone has a spare A3 board they would like to part with that would be OK as well. Reply _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.