Hi Joe, >TA51 transmitter. Here is the real problem. I can only get 2.5Khz deviation of clean 1000Hz audio out of the transmitter. I can push it to 3Khz, but it gets distorted.
That transmitter uses an RC phase modulator instead of an LC phase modulator, which means the maximum phase shift is limited to 90 degress instead of 180. With fewer multiplication stages than the other models, it'll ouput less deviation. While the crystal may indeed be bad, you're not modulating the crystal, so it's "motional capacitance" is not a modulation issue. 73, Bob Bob Schmid, WA9FBO, Member S-COM, LLC PO Box 1546 LaPorte CO 80535-1546 970-416-6505 voice 970-419-3222 fax www.scomcontrollers.com **************************************Check out AOL's list of 2007's hottest products. (http://money.aol.com/special/hot-products-2007?NCID=aoltop00030000000001)
