On Sat, 17 Sep 2011 10:10:53 -0400, Eddy Swynar wrote: >What can REALLY be vexing, though, is when the crystal(s) used in >carrier-generating oscillator frequencies "migrate": I once had an SB-102 >transceiver that sounded very tinny & nasal-sounding on LSB only---much to my >chagrin, THAT carrier generating crystal had shifted just enough so as to put >a goodly portion of my signal REMOVED from the passband of the IF filter!
I always wondered why some manufacturers didn't put adjustment trimmers in the carrier oscillator curcuit. This is one of the most critical adjustments in a SSB radio, and I'm a-r enough about it these days that I check my frequency counter agianst a rubidium standard before I make adjustments. I actually added trimmer caps to the HW-101 that I had years ago so I could get it right. 73 -Jim -- Ham Radio NU0C Lincoln, Nebraska, U.S.S.A. TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! "Give a man a URL, and he will learn for an hour; teach him to Google, and he will learn for a lifetime." HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/ http://incolor.inetnebr.com/jshorney http://www.nebraskaghosts.org _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
