B jfifSfSjSdfak HHH fiS9Efi3i ttjHHHHHHHHBHB MMHHMHHMjj flfljfljBBHB.WORLDS LARGEST- SELLING ELECTRONICS MAGAZINE FEBRUARY 19757 75c.Box 1284. Indianapolis.Indiana -.6206: Telephone: 317-856-3731.
Batteries Capacitors ControIs Security Próducts DURATAPE Resistors Sémiconductors SONALEBT Switches. DURACELL, DURATAPE ánd SONALERT a é registered trademarks óf P. R. Mallory Co. Inc. CT-P Powér Supply fór CT-1024-1 15-230 Volt Primaries 15.50 PPd. Put punch in your voice, from a block Extra large Power S Meter lets you. New Dyna-Mike gain contiol puts out easily even when its tucked under. An important feature, but only noise limiter, P.A. The Cobra 21 with crystal filter, compact cabinet only 6 wide x 7Y 2. Features 60 dB adjacent channel Ask your CB Dealer for the Cobra 21. Theory and applications of a circuit revitalized by IC technology. KEYING AND VCA CIRCUITS FOR ELECTRONIC MUSIC INSTRUMENTS, PART II Don Lancaster 37. New bar-gráph device provides signaI-strength readouts, accuraté peak signals. Tests virtually ány digital logic famiIy at speeds tó 10 MHz. UPDATE YOUR DlGITAL CLOCK WlTH ADD-ONS Jéffrey Glick, Jerry McEIwee Wilbur Marky 50. An hourly chimér, alarm for héavy sleepers, and grandfathérs tick-tock. POPULAR ELECTRONICS, Fébruary 1975, Volume 7, Number 2. Pub-. Mark Registered. Indexed in thé Readers Guide tó Periodical Literature. Forms 3579 and all subscription correspondence should be addressed. CO 80302. Please allow at least eight weeks for change of address. In-. Editorial cóntributions must be accompaniéd by return postagé and. Fig. 1. An azimuth error, as indicated at (A) is a common cause of losses at the extreme. Fig. 3. A height error of the record head on a half-track machine creates an. Fig. 4. Azimuth errors between record and playback heads produce high-freguency losses.
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