See Order Form for prices.
Schematic
Diagram (46K GIF) · Complete Kit Instructions (440 PDF)
For detailed technical background see ALL ABOUT SPEECH PROCESSING.
BOOST YOUR CB RADIO
“TALK POWER” & RANGE
Blow Their Ears Off With DYNAMIC SPEECH PROCESSING!
Ever wonder
why Rock 'N Roll radio stations always seem so loud? Or why TV commercials seem to be
louder than the program itself? The reason is because smart broadcasters use exactly the
same modulation processing that’s now yours in this simple add-on device. You
won’t find this circuitry in the average radio; it would cost a lot more. And the
sophisticated design requires too many parts to fit inside a power mike.
Your voice only modulates a transmitter about 30% on the average. So during a one-minute transmission, you’re really only hitting full RF power output for about 20 seconds; the other 40 seconds are wasted energy. Here’s why: almost all of the voice power is concentrated in the consonant sounds (B, K, S, etc.). The vowel sounds (A, E, I, O, U) contain very little average power and can cause high-intensity peaks which easily overmodulate a transmitter, causing channel splatter and "bleedover." Also, voice frequencies below 500 Hz and above 3000 Hz contain little power and don’t really improve voice communications. With our DYNAMIC SPEECH PROCESSOR, the unwanted frequencies are reduced while at the same time the high intensity peaks are "clipped off." The ’scope photos show how the DSP effectively raises the average power relative to the peak power. The result is a dramatic increase in perceived loudness by the listener, to about 90% average modulation. Now you’re running at your full potential RF power output almost all the time! And the best part is that proper adjustment of the DSP output eliminates overmodulation and channel bleedover while letting your voice punch through LOUD!
FEATURES:SOLD EITHER AS COMPLETE KIT OR AS PLANS + PC BOARD
Manufactured by:
CBC INTERNATIONAL · P.O. BOX 30655 · TUCSON AZ 85751 U.S.A.
TEL/FAX: 888-I-FIX-CBs (1-888-434-9227), (520) 298-7980
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