Message	Date	From	Subject
6425	2011-06-27 12:43:26	ka3j12	HC49/US Crystal Parameters
Does anyone happen to know or could measure the critical parameters (i.e., Lm, Cp, Q) for a "typical" 4-5 MHz range HC49/US crystal? The same information for higher frequency crystals (8-12 MHz) might be useful to know too. Looks like the larger HC49 crystals are becoming obsolete so future designs may need to be based on the smaller /US variety. Thanks for your help! 73, Ron (KA3J)
6426	2011-06-27 13:13:28	Jim Kortge	Re: HC49/US Crystal Parameters

6427	2011-06-27 13:14:52	Jim Kortge	Re: HC49/US Crystal Parameters

Does anyone happen to know or could measure the critical parameters (i.e., Lm, Cp, Q) for a "typical" 4-5 MHz range HC49/US crystal? The same information for higher frequency crystals (8-12 MHz) might be useful to know too. Looks like the larger HC49 crystals are becoming obsolete so future designs may need to be based on the smaller /US variety. Thanks for your help!

73,

Ron (KA3J)