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Topic 1 discusses audio amplifiers. Topic 2 discusses video amplifiers and radio frequency amplifiers. Topic 3 presents differential, operational, and magnetic amplifiers. Factors which affect how an amplifier performs, such as impedance, feedback frequency response, and coupling, are also explained.
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?Globe King 500?-based Homebrew Transmitter. This is a homebrew transmitter in a 5 foot tall rack. It has 5 decks in the rack: 500B on top, speech amp, PP 811A modulator, modulator supply and RF deck supply. The key to this transmitter is the stock WRL 500B RF deck (bandswitching 160-10 meters). The rest of the rig is homebrew. 2.Amplifier working frequency of the lower limit is subject to input and output capacitor, the default value is 0.1 uF, working to 0.1 MHz. Increase the input and output capacitance appropriately,can extend the cut-off frequency, such as 10uF capacitance can work to 5 KHz.
Mar 09, 2015 · Single Sideband on 2 Meters: The Other VHF Mode Most new hams get started on the ham bands using FM, with 2m and 70cm being the most popular bands. This is a great way to get started using VHF simplex and repeater communications.
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