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Posts tagged QRP、

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

Transmitter circuit schematic with MC2833 delivers up to 3W

Transmitter circuit schematic with MC2833 delivers up to 3W It is capable of operation over about 29 to 32 MHz with the components shown. A 27MHz NBFM transmitter circuit schematic with MC2833 and 2 FEET transistors MPF6660. Using a Motorola MC2833 one-chip FM transmitter, a few support components and am MPF6660 RF amp, this transmitter […]

5W Audio Amplifier Circuit using AN7168

5W Audio Amplifier Circuit using AN7168

Simple Vcsel Laser Tester circuit

Simple Vcsel Laser Tester circuit using 74HC14, 2N2222, 7805

Electronic circuit diagram audio amplifier AN7178 6w

Electronic circuit diagram audio amplifier AN7178 6w

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